Keith Rankin, trained as an economic historian, is a retired lecturer in Economics and Statistics. He lives in Auckland, New Zealand.
Every country has its tragedies. A few are highly remembered. Most are semi-remembered. Others are almost entirely forgotten. Sometimes the loss of memory is due to these tragedies being to a degree international, seemingly making it somebody else’s ‘duty’ to remember them. This could have been the case with the Air New Zealand flight which crashed on Mt Erebus. It was only not like that because it was an ‘international’ flight where the origin and destination airports were the same; and where the location of the crash was in the ‘New Zealand zone’ of a foreign landmass (Antarctica). So, we remember ‘Erebus’.
We remember ‘Tangiwai’ too; Christmas Eve, 1953. And of course Napier (1931) and Christchurch (2011). And the Wahine (1968). And Pike River (2010).
The forgotten tragedy was actually a twin-tragedy; two smaller (but not small) tragedies may more easily fall below the memory radar than one bigger tragedy. The dates were 22 July 1973 and January 1974. The death toll was about 200; possibly half of that number were New Zealanders, many of them being young New Zealanders my age or a little bit older.
On Saturday I watched (on Sky Open) the first part of a documentary about the Lockerbie crash of PanAm Flight 103, on 21 December 1988. This is particularly remembered globally because, as well-as being a first-order human-interest tragedy, it involved geopolitical skullduggery. Going into the documentary – and I have yet to see the recent drama ‘Lockerbie’ starring Colin Firth – my understanding of the above-Lockerbie bombing of a Pan American Boeing 747 is that it was a revenge attack, following the shooting down months earlier of an Iranian airliner (Iran Air Flight 655, an Airbus A300 flying from Tehran to Dubai with 290 people on board).
I left New Zealand for my ‘OE’ by ship – the Northern Star – in April 1974, just before my 21st birthday. I returned via Africa, flying via numerous stops, in 1978; many of my school-peers were just about to leave New Zealand when I returned.
I started planning about how I would travel in mid-1973. In the very early 1970s, it became more common to fly to the United Kingdom than to sail. Pricewise, 1973 was about when the fare was the same by both transport modes. Since Air New Zealand had had its Douglas DC8 aircraft, the most popular flying route was across the Pacific Ocean. It was then usual to do two stopovers – Nadi and Honolulu – on the way to Los Angeles. The main competitor airline on that route was Pan American. It mainly flew via Pago Pago and Honolulu, using Boeing 707 aircraft. But it had also just started flying to Los Angeles with just a single stop, Papeete in Tahiti.
One
On 23 July 1973, Pan Am Flight 816 took-off for Papeete. This was also the month in which the New Zealand Navy’s HMNZS Otago – with cabinet Minister Fraser Colman on board – sailed into the Mururoa French nuclear testing zone; a New Zealand government protest against French nuclear testing in the South Pacific. (Ref. RNZ 7 July 2023, 50th anniversary of nuclear test protests.)
After refuelling, and presumably taking on some passengers, Pan Am 816 took off that evening (22 July, due to the date line), and crashed into the sea. It may have been overweight; although it was not full of passengers. There was one survivor, a Canadian passenger. 78 people died. No cause has ever been determined. The ‘black boxes’ sunk in 700m of water and could not – or would not – be recovered.
There was one famous New Zealander on board Flight 816. Geoff Perry (b.1950) was already a world-class motorcycle racer, who competed at 1972 Daytona 200 in Florida. He was a “superstar in the making”. In 1971, Roger Donaldson made a short film Geoff Perry, narrated by Ian Mune. It was the beginning of Donaldson’s stellar career as a filmmaker.
Two
On 31 January 1974, Pan Am Flight 806 left Auckland for Pago Pago, American Samoa. It crashed on landing. Four people survived; 97 people died from their injuries. The explanation for the crash is not very satisfactory; ‘human error’, it would seem.
Impact on me
I am not sure to what extent the first of these crashes persuaded me to sail to the United Kingdom, rather than to fly. I do remember at some point someone I knew telling me they had a friend on board one of those flights. There was little analysis of these crashes at the time, and even less in later years. Aeroplane crashes were more common around the world in those days, much more likely (but still unlikely!) than in this century. And 1973 had a record high road death toll that year; more than double what we get in even a bad year these days. As a society, in those times we were somewhat blasé then about accidental death. Many people my age died in motorcycle crashes; and, yes, I motorcycled from one end of the country to the other from May 1972 to May 1973.
So, even though more of my age cohort died on the roads than in the air in those years, I do believe that the 175 victims of Pan Am 816 and 806 should be better remembered than they have been. It’s time to produce a docudrama – like the Tangiwai television docudrama, and the Lockerbie programmes – while there are still the memories of brothers and sisters of the young victims; young people like me heading for their lives’ first great adventure.
*******
Keith Rankin (keith at rankin dot nz), trained as an economic historian, is a retired lecturer in Economics and Statistics. He lives in Auckland, New Zealand.
The international space industry is on a growth trajectory, but new research shows a rapid increase in rocket launches would damage the ozone layer.
Several hundred rockets are launched globally each year by a mix of commercial companies and nation-state space programmes. These take place at around 20 sites, almost all in the northern hemisphere, with the most prolific launch rates currently from the United States, China, New Zealand and Russia.
Our latest research explores the tipping point when launching more rockets will begin to cause problems. Our findings show that once rates reach 2,000 launches a year – about a ten-fold increase on last year – the current healing of the ozone layer slows down.
We argue that with care, we can avoid this future. The economic benefits of industry growth can be realised, but it will take a collaborative effort.
Rocket launches thin the ozone layer
The ozone layer protects life on Earth from harmful solar ultraviolet (UV) rays. It is slowly healing from the effects of chlorofluorocarbons and other damaging chemicals emitted last century, thanks to global cooperative agreements under the Montreal Protocol.
Gases and particulates emitted by rockets as they punch through the atmosphere are known to thin the ozone layer. So far, they don’t cause appreciable ozone depletion, as relatively few launches take place each year.
However, launches are steadily increasing. In 2019, there were 102 launches. By 2024, that increased to 258 worldwide. There are expected to be even more in 2025. At multiple sites worldwide, the launch industry projects impressive levels of future growth.
For US-based launches, a three-fold increase in the number of rockets launched in 2023 is expected as soon as 2028.
One driver of this growth is the effort to build out satellite constellations to tens of thousands of units, positioned low in Earth’s orbit. These require many launches to create and are happening in several nations, run by a number of companies.
Once in place, these constellations require ongoing launches to keep them supplied with active satellites.
Potential delay in ozone recovery
To figure out how future launches could affect the ozone layer, we first built a database of ozone-depleting chemicals emitted by rockets currently in use. We then fed this database into a model of Earth’s atmosphere and climate, and simulated atmospheric composition under several scenarios of higher rates of rocket launches.
We found that with around 2,000 launches worldwide each year, the ozone layer thins by up to 3%. Due to atmospheric transport of rocket-emitted chemicals, we saw the largest ozone losses over Antarctica, even though most launches are taking place in the northern hemisphere.
Fortunately, the ozone losses are small. We wouldn’t expect to see catastrophic damage to humans or ecosystems. However, the losses are significant given global efforts underway to heal the ozone layer. The global abundance of ozone is still around 2% lower than before the onset of losses caused by chlorofluorocarbons.
Future ozone losses are not locked in
Encouragingly, we found no significant ozone loss in a scenario of more modest rates of around 900 launches per year. However, this is for the types of rockets that are in use right now around the world.
We focus on current launch vehicles because it is uncertain when the new and massive rockets currently in development will enter use. But these larger rockets often require far more fuel, which creates more emissions at each launch.
Rocket propellant choices make a big difference to the atmosphere. We found fuels emitting chlorine-containing chemicals or black carbon particulates have the largest effects on the ozone layer. Reducing use of these fuels as launch rates increase is key to supporting an ongoing recovery of the ozone layer.
Re-entering spacecraft and satellite debris can also cause damage. However, the global scientific community doesn’t yet fully understand the chemistry around re-entry. Our work provides a realistic “floor” for the lowest level of damage that will occur.
But it is important to remember that these effects are not locked in. It is entirely possible to create a launch industry where we avoid harmful effects, but that would require reducing use of chlorine-containing fuels, minimising black carbon emissions by new rockets and monitoring emissions.
It will take keen effort and enthusiasm from industry and regulators, working together with scientists. But this needs to start now, not after the damage is done.
Laura Revell is a member of the International Ozone Commission and the UNEP Environmental Effects Assessment Panel, which assesses the effects of ozone depletion on life on Earth. She is a Rutherford Discovery Fellow, funded by the Royal Society of NZ Te Apārangi.
Michele Bannister is the NZ delegate for the International Astronomical Union, serves on the COSPAR-NZ national committee, is a voting member of Aerospace New Zealand, and has research collaborations with the IAU Centre for Protection of the Dark & Quiet Sky. She is a Rutherford Discovery Fellow, funded by the Royal Society of NZ Te Apārangi.
Source: People’s Republic of China in Russian – People’s Republic of China in Russian –
Source: People’s Republic of China – State Council News
BEIJING, June 8 (Xinhua) — An earthquake with a magnitude of 6.2 jolted the western Indian-Antarctic Ridge at 23:20 GMT on Saturday, the U.S. Geological Survey said.
According to preliminary data, the epicenter of the tremors was located at a point with coordinates of 47.83 degrees south latitude and 116.02 degrees east longitude. The hypocenter was located at a depth of 10.0 km. –0–
overnor Kathy Hochul today issued an update on the State’s comprehensive air monitoring efforts to track air quality statewide and keep New Yorkers safe this summer. New York residents and visitors are reminded to include air quality awareness in their daily warm weather routines. In addition, New York State is issuing an Air Quality Health Advisory for today, Friday, June 6, for the Adirondacks, Eastern Lake Ontario, and Western New York regions for fine particulate matter pollution caused by wildland fires in Western Canada.
“Using the latest science and data, New York continues to track air quality conditions across the State to keep New York communities safe,” Governor Hochul said. “As temperatures begin to climb during the summer months and less predictable factors like distant wildfires occur, I strongly encourage New Yorkers to stay informed and prepare for changes in air quality by paying attention to the State’s Air Quality Health Advisories and take necessary precautions to stay safe.”
The New York State Department of Environmental Conservation (DEC) provides daily air quality forecasts to ensure air quality information is available at New Yorkers’ fingertips. While New York State has some of the nation’s most stringent air quality regulations to reduce air pollution and protect public health and the environment, there are certain days that ozone or particulate matter can impact air quality in your community.
Using data collected from more than 50 sites across the state, DEC and Department of Health (DOH) issue Air Quality Health Advisories when DEC meteorologists predict levels of pollution, either ozone or fine particulate matter (PM2.5), are expected to exceed an Air Quality Index (AQI) value of 100. The AQI was created as an easy way to correlate levels of different pollutants to one scale, with a higher AQI value indicating a greater health concern.
An Air Quality Health Advisory for PM2.5 is being issued for Friday, June 6, 2025, for the Adirondacks, Eastern Lake Ontario, and Western New York regions due to the impact of smoke from wildfires in Canada.
New Yorkers are encouraged to check airnow.gov for accurate information on air quality forecasts and conditions. Information about exposure to smoke from fires can be found on DOH’s website.
DEC Commissioner Amanda Lefton said, “It is critical that New Yorkers be Air Quality Aware this summer to stay safe and healthy“ DEC continues to track air quality across the state and works with our partners at the Department of Health to keep the public informed about how to protect themselves and their families and reduce their exposure to air pollution. New Yorkers can visit DEC’s website for the daily forecast or use trusted sources like EPA’s AirNow app, which uses air quality data provided by DEC’s statewide monitoring network.”
New York State Health Commissioner Dr. James McDonald said, “Pollutants like particulate matter from wildfires or ground-level ozone can pose serious health risks—especially for those with heart conditions or lung disease such as asthma, as well as the very young, those over 65 years old and pregnant people. Just as you check the weather on your phone each morning, we encourage all New Yorkers to visit to airnow.gov for the latest air quality forecast and be on the lookout for Air Quality Health Advisories from the Department of Environmental Conservation and the Department of Health. When air quality is poor, protect yourself by staying inside, reduce exposure and minimize exertion when outdoors.”
Air pollution can harm public health and natural resources in a variety of ways. Hot summer weather sets the stage for two major pollutants of concern for human health: the formation of ozone and fine particulate matter (PM2.5), tiny solid particles or liquid droplets in the air that are 2.5 microns or less in diameter. Fish and wildlife show harmful effects from acid rain and mercury in air. Greenhouse gases in the air are changing the world’s climate and contributing to harmful impacts including extreme heat, deadly flooding, drought, fires, rising sea levels, and severe storms.
Extreme Heat
Governor Hochul recently highlighted new and enhanced resources available to protect New York communities from extreme heat this summer as recommended by the State’s Extreme Heat Action Plan, including:
New support for cooling at home: With the new Essential Plan Cooling program, NY State of Health will provide eligible Essential Plan members a free air conditioner to help keep their homes cool. This will complement assistance available in 2025 through the HEAP Cooling program which served more than 23,000 households in 2024.
Better access to cooling centers: New resources are available to help connect New Yorkers with safe spaces for cooling. The New York State Department of Health and Division of Homeland Security and Emergency Services (DHSES) will continue to coordinate with local health departments and emergency managers to update the Cooling Center Finder throughout summer 2025. DOH offers new resources to provide information about best practices for setting up cooling centers and how these locations could serve as clean air centers. Round 8 of the Climate Smart Communities grant program is now open, making $22 million available to fund GHG mitigation and climate adaptation projects, including establishing cooling centers.
Additional support for cool buildings: Funding available through the New York State Energy Research and Development Authority (NYSERDA) supports weatherization and clean and efficient heating and cooling that can improve extreme heat resilience at homes, community anchor institutions, schools, and more. The Office of General Services’ new “Decarbonization and Climate Resiliency Design Guide” was released for new and majorly renovated State building projects to assess and reduce climate risk (including extreme heat and Urban Heat Islands) through proactive design.
New investments in cool schools: The Education Law newly requires public school districts and BOCES to develop an extreme heat policy, which establishes certain temperature thresholds. NYSERDA offers additional funding to install clean cooling and heating at schools, for example through funding as part of the Clean Water, Clean Air and Green Jobs Environmental Bond Act.
Enhanced tools and funding for cool communities: Extreme heat advice and forecasts for New Yorkers, preliminary extreme heat exposure maps and DOH’s Heat Vulnerability Index help communities understand exposure and vulnerabilities. Programs such as Climate Smart Communities fund communities in planning, designing, and implementation solutions. New and expanded funding supports nature-based solutions such as urban forests, urban farms, and community gardens to cool neighborhoods and mitigate heat islands. Governor Hochul’s New York Statewide Investment in More Swimming (NY SWIMS) initiative expanded outdoor swimming through the Connect Kids to Swimming Instruction Transportation grant program and advanced capital projects for swimming facilities in underserved communities through the NY SWIMS Round One competitive grant program.
DOH recently launched an interactive New York State Heat Risk and Illness Dashboard that allows the public and county health care officials to determine the forecasted level of heat-related health risks in their area and raise awareness about the dangers of heat exposure.
Check out “DEC Does What?!” podcast episode #4 The Air Up There (May 2024) where air pollution meteorologists explain the Air Quality Index and how to use it, how weather conditions and different seasons can affect air quality, whether New Yorkers have to worry about wildfire smoke, and what it’s like to measure air quality in Antarctica.
ER Report: Here is a summary of significant articles published on EveningReport.nz on June 5, 2025.
Final counting shows polls understated Labor in 2025 election almost as much as they overstated it in 2019 Source: The Conversation (Au and NZ) – By Adrian Beaumont, Election Analyst (Psephologist) at The Conversation; and Honorary Associate, School of Mathematics and Statistics, The University of Melbourne With almost all primary votes now counted to two-party preferred (as I explained on May 29), Labor has won the national two-party vote by a 55.3–44.7 margin,
Resignation of PM’s press secretary highlights gaps in NZ law on covert recording and harassment Source: The Conversation (Au and NZ) – By Cassandra Mudgway, Senior Lecturer in Law, University of Canterbury Getty Images The sudden resignation this week of one of Prime Minister Christopher Luxon’s senior press secretaries was politically embarrassing, but also raises questions about how New Zealand law operates in such cases. A Stuff investigation revealed the
One year ago, Australia scrapped a key equity in STEM program. Where are we now? Source: The Conversation (Au and NZ) – By Maria Vieira, Lecturer, Education Futures, University of South Australia ThisIsEngineering/Pexels In June 2024, the Australian government ended the Women in STEM Ambassador program. The decision followed a report that urged a broader, intersectional approach to diversity in the fields of science, technology, engineering and maths (STEM). For
Woodside’s North West Shelf approval is by no means a one-off. Here are 6 other giant gas projects to watch Source: The Conversation (Au and NZ) – By Samantha Hepburn, Professor, Deakin Law School, Deakin University GREG WOOD/AFP via Getty Images The federal government’s decision to extend the life of Woodside’s North West Shelf gas plant in Western Australia has been condemned as a climate disaster. The gas lobby claims more gas is needed to
Unprecedented heat in the North Atlantic Ocean kickstarted Europe’s hellish 2023 summer. Now we know what caused it Source: The Conversation (Au and NZ) – By Matthew England, Scientia Professor and Deputy Director of the ARC Australian Centre for Excellence in Antarctic Science, UNSW Sydney Westend61/Getty Images In June 2023, a record-breaking marine heatwave swept across the North Atlantic Ocean, smashing previous temperature records. Soon after, deadly heatwaves broke out across large areas
Bowel cancer rates are declining in people over 50. But why are they going up in younger adults? Source: The Conversation (Au and NZ) – By Suzanne Mahady, Associate Professor, Gastroenterologist & Clinical Epidemiologist, Monash University Thirdman/Pexels Bowel cancer is the fourth most common cancer in Australia, with more than 15,000 cases diagnosed annually. It’s also the second most common cause of cancer-related death. Recently, headlines have warned of an uptick in cases
Australian kids BYO lunches to school. There is a healthier way to feed students Source: The Conversation (Au and NZ) – By Liesel Spencer, Associate Professor, School of Law, Western Sydney University Getty Images/ courtneyk Australian parents will be familiar with this school morning routine: hastily making sandwiches or squeezing leftovers into containers, grabbing a snack from the cupboard and a piece of fruit from the counter. This would
Australia’s charity sector is growing – but many smaller charities are doing it tough Source: The Conversation (Au and NZ) – By Margaret Faulkner, Senior Marketing Scientist, Ehrenberg-Bass Institute, University of South Australia Revenue for Australia’s charity and not-for-profit sector has reached record highs, and total donations have grown. But the story isn’t the same everywhere, and some smaller charities may be struggling. That’s according to the latest edition
Taylor Swift now owns all the music she has ever made: a copyright expert breaks it down Source: The Conversation (Au and NZ) – By Wellett Potter, Lecturer in Law, University of New England On Friday, Taylor Swift announced she now owns all the music she has ever made. This reported US$360 million acquisition includes all the master recordings to her first six albums, music videos, concert films, album art, photos and
The secret to Ukraine’s battlefield successes against Russia – it knows wars are never won in the past Source: The Conversation (Au and NZ) – By Matthew Sussex, Associate Professor (Adj), Griffith Asia Institute; and Fellow, Strategic and Defence Studies Centre, Australian National University The iconoclastic American general Douglas Macarthur once said that “wars are never won in the past”. That sentiment certainly seemed to ring true following Ukraine’s recent audacious attack on
Politics with Michelle Grattan: historian Emma Shortis warns against falling into Trump’s trade traps Source: The Conversation (Au and NZ) – By Michelle Grattan, Professorial Fellow, University of Canberra Prime Minister Anthony Albanese is expected to have his first face-to-face meeting with US President Donald Trump this month, against a background of increased steel and aluminium tariffs and US pressure on Australia to boost its defence spending. How Australia
Extreme weather events have slowed economic growth, adding to the case for another rate cut Source: The Conversation (Au and NZ) – By Stella Huangfu, Associate Professor, School of Economics, University of Sydney Australia’s economy slowed sharply in the March quarter, growing by just 0.2% as government spending slowed and extreme weather events dampened demand. That followed an increase of 0.6% in the previous quarter. The national accounts report from
Young people who witness domestic violence are more likely to be victims of it. Here’s how we can help them Source: The Conversation (Au and NZ) – By Kristin Diemer, Associate Professor of Sociology, The University of Melbourne In our national discussions on domestic and family violence, much of the focus is rightly on the women experiencing the violence and how best to help them. But another vital, less acknowledged part of the puzzle is
Gluten intolerance and coeliac disease can both cause nausea, bloating and pain. What’s the difference? Source: The Conversation (Au and NZ) – By Yasmine Probst, Professor, School of Medical, Indigenous and Health Sciences. Advanced Accredited Practising Dietitian, University of Wollongong fotodrobik/Shutterstock Around one in ten Australians say they follow a gluten-free diet. This means eliminating common foods – such as bread, pasta and noodles – that contain gluten, a protein
How physicists used antimatter, supercomputers and giant magnets to solve a 20-year-old mystery Source: The Conversation (Au and NZ) – By Finn Stokes, Ramsay Fellow in Physics, University of Adelaide Cindy Arnold, Fermilab Physicists are always searching for new theories to improve our understanding of the universe and resolve big unanswered questions. But there’s a problem. How do you search for undiscovered forces or particles when you don’t
Ahead of the Brisbane Olympics, it’s time for Australia to get serious about esports Source: The Conversation (Au and NZ) – By Craig McNulty, Senior Lecturer in Exercise Physiology, Queensland University of Technology Roman Kosolapov/Shutterstock Most of us have heard of esports but many don’t realise the fast-growing world of competitive video gaming features tournaments, university scholarships and billions of dollars in revenue. As we approach the 2032 Brisbane
Source: The Conversation – Global Perspectives – By Matthew England, Scientia Professor and Deputy Director of the ARC Australian Centre for Excellence in Antarctic Science, UNSW Sydney
Westend61/Getty Images
In June 2023, a record-breaking marine heatwave swept across the North Atlantic Ocean, smashing previous temperature records.
It wasn’t just Europe that was impacted. The coral reefs of the Caribbean were bleaching under severe heat stress. And hurricanes, fuelled by ocean heat, intensified into disasters. For example, Hurricane Idalia hit Florida in August 2023 – causing 12 deaths and an estimated US$3.6 billion in damages.
This so-called “cold blob” or “warming hole” has been linked to the weakening of what’s known as the Atlantic Meridional Overturning Circulation – a system of ocean currents that conveys warm water from the equator towards the poles.
During July 2023 we met as a team to analyse this cold blob – how deep it reaches and how robust it is as a measure of the strength of the Atlantic overturning circulation – when it became clear there was a strong reversal of the historical cooling trend. The cold blob had warmed to 2°C above average.
But was that a sign the overturning circulation had been reinvigorated? Or was something else going on?
A layered story
It soon became clear the anomalous warm temperatures southeast of Greenland were part of an unprecedented marine heatwave that had developed across much of the North Atlantic Ocean. By July, basin-averaged warming in the North Atlantic reached 1.4°C above normal, almost double the previous record set in 2010.
To uncover what was behind these record breaking temperatures, we combined estimates of the atmospheric conditions that prevailed during the heatwave, such as winds and cloud cover, with ocean observations and model simulations.
We were especially interested in understanding what was happening in the mixed upper layer of water of the ocean, which is strongly affected by the atmosphere.
Distinct from the deeper layer of cold water, the ocean’s surface mixed layer warms as it’s exposed to more sunlight during spring and summer. But the rate at which this warming happens depends on its thickness. If it’s thick, it will warm more gradually; if it’s thin, rapid warming can ensue.
During summer the thickness of this surface mixed layer is largely set by winds. Winds churn up the surface ocean and the stronger they are the deeper the mixing penetrates, so strong winds create a think upper layer and weak winds generate a shallower layer.
Our new research indicates that the primary driver of the marine heatwave was record-breaking weak winds across much of the basin. The winds were at their weakest measured levels during June and July, possibly linked to a developing El Niño in the east Pacific Ocean.
This led to by far the shallowest upper layer on record. Data from the Argo Program – a global array of nearly 4,000 robotic floats that measure the temperature and salinity in the upper 2,000 metres of the ocean – showed in some areas this layer was only ten metres deep, compared to the usual 20 to 40 metres deep.
This caused the sun to heat the thin surface layer far more rapidly than usual.
In addition to these short term changes in 2023, previous research has shown long-term warming associated with anthropogenic climate change is reducing the ability of winds to mix the upper ocean, causing it to gradually thin.
We also identified a possible secondary driver of more localised warming during the 2023 marine heatwave: above-average solar radiation hitting the ocean. This could be linked in part with the introduction of new international rules in 2020 to reduce sulfate emissions from ships.
The aim of these rules was to reduce air pollution from ship’s exhaust systems. But sulfate aerosols also reflect solar radiation and can lead to cloud formation. The resultant clearer skies can then lead to more ocean warming.
Early warning signs
The extreme 2023 heatwave provides a preview of the future. Marine heatwaves are expected to worsen as Earth continues to warm due to greenhouse gas emissions, with devastating impacts on marine ecosystems such as coral reefs and fisheries. This also means more intense hurricanes – and more intense land-based heatwaves.
To better understand, forecast and plan for the impacts of marine heatwaves, long-term ocean and atmospheric data and models, including those provided by the National Oceanic and Atmospheric Administration (NOAA) in the United States, are crucial. In fact, without these data and models, our new study would not have been possible.
Despite this, NOAA faces an uncertain future. A proposed budget for the 2026 fiscal year released by the White House last month could mean devastating funding cuts of more than US$1.5 billion – mostly targeting climate-based research and data collection.
This would be a disaster for monitoring our oceans and climate system, right at a time when change is severe, unprecedented, and proving very costly.
Matthew England receives funding from the Australian Research Council.
Alex Sen Gupta receives funding from the Australian Research Council.
Andrew Kiss receives funding from the Australian Research Council.
Zhi Li receives funding from the Australian Research Council.
Source: The Conversation (Au and NZ) – By Matthew England, Scientia Professor and Deputy Director of the ARC Australian Centre for Excellence in Antarctic Science, UNSW Sydney
Westend61/Getty Images
In June 2023, a record-breaking marine heatwave swept across the North Atlantic Ocean, smashing previous temperature records.
It wasn’t just Europe that was impacted. The coral reefs of the Caribbean were bleaching under severe heat stress. And hurricanes, fuelled by ocean heat, intensified into disasters. For example, Hurricane Idalia hit Florida in August 2023 – causing 12 deaths and an estimated US$3.6 billion in damages.
This so-called “cold blob” or “warming hole” has been linked to the weakening of what’s known as the Atlantic Meridional Overturning Circulation – a system of ocean currents that conveys warm water from the equator towards the poles.
During July 2023 we met as a team to analyse this cold blob – how deep it reaches and how robust it is as a measure of the strength of the Atlantic overturning circulation – when it became clear there was a strong reversal of the historical cooling trend. The cold blob had warmed to 2°C above average.
But was that a sign the overturning circulation had been reinvigorated? Or was something else going on?
A layered story
It soon became clear the anomalous warm temperatures southeast of Greenland were part of an unprecedented marine heatwave that had developed across much of the North Atlantic Ocean. By July, basin-averaged warming in the North Atlantic reached 1.4°C above normal, almost double the previous record set in 2010.
To uncover what was behind these record breaking temperatures, we combined estimates of the atmospheric conditions that prevailed during the heatwave, such as winds and cloud cover, with ocean observations and model simulations.
We were especially interested in understanding what was happening in the mixed upper layer of water of the ocean, which is strongly affected by the atmosphere.
Distinct from the deeper layer of cold water, the ocean’s surface mixed layer warms as it’s exposed to more sunlight during spring and summer. But the rate at which this warming happens depends on its thickness. If it’s thick, it will warm more gradually; if it’s thin, rapid warming can ensue.
During summer the thickness of this surface mixed layer is largely set by winds. Winds churn up the surface ocean and the stronger they are the deeper the mixing penetrates, so strong winds create a think upper layer and weak winds generate a shallower layer.
Our new research indicates that the primary driver of the marine heatwave was record-breaking weak winds across much of the basin. The winds were at their weakest measured levels during June and July, possibly linked to a developing El Niño in the east Pacific Ocean.
This led to by far the shallowest upper layer on record. Data from the Argo Program – a global array of nearly 4,000 robotic floats that measure the temperature and salinity in the upper 2,000 metres of the ocean – showed in some areas this layer was only ten metres deep, compared to the usual 20 to 40 metres deep.
This caused the sun to heat the thin surface layer far more rapidly than usual.
In addition to these short term changes in 2023, previous research has shown long-term warming associated with anthropogenic climate change is reducing the ability of winds to mix the upper ocean, causing it to gradually thin.
We also identified a possible secondary driver of more localised warming during the 2023 marine heatwave: above-average solar radiation hitting the ocean. This could be linked in part with the introduction of new international rules in 2020 to reduce sulfate emissions from ships.
The aim of these rules was to reduce air pollution from ship’s exhaust systems. But sulfate aerosols also reflect solar radiation and can lead to cloud formation. The resultant clearer skies can then lead to more ocean warming.
Early warning signs
The extreme 2023 heatwave provides a preview of the future. Marine heatwaves are expected to worsen as Earth continues to warm due to greenhouse gas emissions, with devastating impacts on marine ecosystems such as coral reefs and fisheries. This also means more intense hurricanes – and more intense land-based heatwaves.
To better understand, forecast and plan for the impacts of marine heatwaves, long-term ocean and atmospheric data and models, including those provided by the National Oceanic and Atmospheric Administration (NOAA) in the United States, are crucial. In fact, without these data and models, our new study would not have been possible.
Despite this, NOAA faces an uncertain future. A proposed budget for the 2026 fiscal year released by the White House last month could mean devastating funding cuts of more than US$1.5 billion – mostly targeting climate-based research and data collection.
This would be a disaster for monitoring our oceans and climate system, right at a time when change is severe, unprecedented, and proving very costly.
Matthew England receives funding from the Australian Research Council.
Alex Sen Gupta receives funding from the Australian Research Council.
Andrew Kiss receives funding from the Australian Research Council.
Zhi Li receives funding from the Australian Research Council.
G7 Foreign Ministers Declaration on Maritime Security and Prosperity
Media Note
March 14, 2025
The text of the following statement was released by the G7 Foreign Ministers of Canada, France, Germany, Italy, Japan, the United Kingdom, the United States of America, and the High Representative of the European Union.
Begin Text:
We, the Foreign Ministers of Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States of America, and the High Representative of the European Union, reaffirm the G7’s steadfast commitment to contribute towards a free, open, and secure maritime domain based on the rule of law that strengthens international security, fosters economic prosperity, and ensures the sustainable use of marine resources.
Maritime security and prosperity are fundamental to global stability, economic resilience, and the well-being of all nations, and the conservation and sustainable use of ocean ecosystems is essential to all life on Earth. Over 80% of global trade is transported by sea, and 97% of global data flows through submarine cables. Disruptions to maritime routes pose a direct threat to international food security, critical minerals, energy security, global supply chains, and economic stability. We express deep concern over the growing risks to maritime security, including strategic contestation, threats to freedom of navigation and overflight, and illicit shipping activities. State behaviour in these areas has increased the risk of conflict and environmental damage, and imperils all nations’ prosperity and living standards, especially for the world’s poorest.
We recognize the role of the UN Convention on the Law of the Sea (UNCLOS) as the legal framework for governing all activities in the oceans and the seas.
We recall the G7 Statements on Maritime Security adopted in Lübeck (2015) and Hiroshima (2016). We welcome related work presently underway through other G7 ministerial tracks and working groups, on a range of issues including securing undersea cable networks and combating abandoned fishing gear. We welcome, as well, G7 work relating to transnational organized crime and terrorism that touches on the maritime domain, including in relation to piracy and armed robbery at sea, trafficking in persons, and strengthening the maritime law enforcement capabilities of coastal states. We acknowledge the importance of regional maritime security frameworks, to support coastal states to address collectively threats to their maritime security. We welcome existing initiatives, such as the G7++ Friends of the Gulf of Guinea (G7++ FoGG, that Canada chairs this year), which has been, the primary forum for dialogue among G7 members and partners on maritime security in the Gulf of Guinea.
Emerging Threat on Safe Seas and Freedom of Navigation and Overflight
Enhancing Stability: We underscore the importance of freedom of navigation and overflight and other internationally lawful uses of the high seas and the exclusive economic zones as well as to the related rights and freedoms in other maritime zones, including the rights of innocent passage, transit passage and archipelagic sea lanes passage, as provided for under international law. We share a growing concern at recent, unjustifiable efforts to restrict such freedom and to expand jurisdiction through use of force and other forms of coercion, including across the Taiwan Strait, and in the South China Sea, the Red Sea, and the Black Sea. We condemn China’s illicit, provocative, coercive and dangerous actions that seek unilaterally to alter the status quo in such a way as to risk undermining the stability of regions, including through land reclamations, and building of outposts, as well as their use for military purpose. In areas pending final delimitation, we underline the importance of coastal states refraining from unilateral actions that cause permanent physical change to the marine environment insofar as such actions jeopardize or hamper the reaching of the final agreement, as well as the importance of making every effort to enter into provisional arrangements of a practical nature, in those areas. We condemn, as well, dangerous vessel maneuvers, the indiscriminate attacks against commercial vessels and other maritime actions that undermine maritime order based on the rule of law and international law. We reiterate that the award rendered by the Arbitral Tribunal on 12 July 2016 is a significant milestone, which is legally binding upon the parties to those proceedings and a useful basis for peacefully resolving disputes between the parties. We reaffirm that our basic policies on Taiwan remain unchanged and emphasize the importance of peace and stability across the Taiwan Strait as indispensable to international security and prosperity. We welcome the resumption of exports from Ukraine’s Black Sea ports. Freedom of navigation for commercial shipping in the Black Sea must be upheld.
Attempts to Change the Status Quo by Force: We oppose unilateral attempts to change the status quo, in particular by force or coercion including in the East and South China Seas. We undertake to implement means through which to track systematically and report on attempts to change the status quo by force and by the establishment of new geographical facts, including through coercive and dangerous actions on the oceans and seas that might threaten regional and international peace and security.
Protecting Critical Maritime and Undersea Infrastructure: We are seized of the fact that vital energy and telecommunications infrastructure under the oceans and seas connects our economies and is vital to our prosperity. We recall the G7 Joint Statement on Cable Connectivity for Secure and Resilient Digital Communications Networks (2024) and the New York Joint Statement on the Security and Resilience of Undersea Cables in a Globally Digitalized World (2024). We share a growing concern that undersea communications cables, subsea interconnectors and other critical undersea infrastructure have been subject to critical damage through sabotage, poor seamanship or irresponsible behaviour which have resulted in potential internet or energy disruption in affected regions, delays in global data transmission, or compromised sensitive communications. We will enhance our cooperation with industry mitigate risks, reduce bottlenecks to operational tasks while strengthening repair capacities in order to improve the overall resilience of critical undersea and maritime infrastructure. In this respect, we welcome the EU Action Plan on Cable Security adopted in February 2025 by the European Commission and the High Representative of the Union for Foreign Affairs and Security Policy.
Maritime Crime: Maritime crime, including piracy, armed robbery at sea, maritime arms trafficking and sanctions evasion, human trafficking, illegal drug trafficking and Illegal, Unreported, Unregulated (IUU) Fishing, continues to impede maritime security, freedom of navigation, and our economy and prosperity. We have been working together to tackle these maritime crimes, but maritime illegal activities have extended into new areas, to become an urgent issue to be addressed. We welcome the G7 Action Plan to combat migrant smuggling adopted under Italy’s 2024 G7 Presidency.
Protecting Freedom of Trade: In the past year, indiscriminate Houthi attacks in the Red Sea have endangered maritime security of vessels and their crews, disturbed international trade, and exposed neighboring countries to environmental hazards. Enabled by Iran’s military, financial, and intelligence support, these illegal attacks have also contributed to increased tension in the Middle East and Yemen, with severe repercussions on the intra-Yemeni peace process. The vessel “Galaxy Leader” seized by the Houthis must be released immediately. We appreciate the efforts of all those countries that have engaged to ensure freedom of navigation in the Red Sea, protecting crucial shipping lanes and helping to restore regular flows of trade through the Suez Canal connecting the Mediterranean Sea to the Indian and Pacific Oceans. In this regard, we commend the efforts of EU’s maritime operation “Aspides” and U.S.-led operation “Prosperity Guardian”.
Safe Shipping and Supply Chain Security
Curtailing Unsafe and Illicit Shipping Practices: The rise of unsafe and illicit shipping practices, including fraudulent registration and registries, poses a significant threat to global trade and environmental sustainability. We are concerned that unsafe and illicit shipping imposes heavy costs on industry, governments and citizens. Russia’s ability to earn revenue has been sustained through its extensive effort to circumvent the G7+ oil price cap policy through its shadow fleet of often older, underinsured, and poorly maintained ships that routinely disable their automatic identification systems or engage in “spoofing” to avoid detection and circumvent international safety, environmental, and liability rules and standards. North Korea continues to pursue its nuclear and ballistic missile programmes and evade sanctions, particularly through its illicit maritime activities, including prohibited ship to-ship transfers of petroleum and other UN-banned commodities. Through G7 coordination, we have exposed North Korea uses of “dark” vessels – those that engage in illicit activity – to circumvent United Nations Security Council mandated sanctions. Russia and North Korea are strengthening their economic relations including through maritime routes, such as the reported transfer of petroleum products from Russia to North Korea Unregulated, “dark” vessels undertake IUU fishing, destroying marine habitats and depleting fish stocks, with negative impacts for biodiversity and food security. Unregulated, inadequately insured “dark” vessels also pose a high risk of maritime accidents, including in fragile ecosystems such as the Arctic and Antarctic. We commit to strengthen our coordination, amongst the G7 and with other partners, to prevent the use of unregistered or fraudulently registered, uninsured and substandard vessels engaged in sanctions evasion, arms transfers, illegal fishing and illicit trade. We encourage relevant International Organizations to improve maritime domain awareness by expanding satellite-based vessel tracking and establishing comprehensive data records of the movement of individual ships and of ship-to-ship transfers, as a means of identifying and tracking illicit maritime activities. We are also committed to capacity building of the countries in the region in law enforcement and Maritime Domain Awareness.
Shadow Fleet Task Force: We invite members of the Nordic-Baltic 8 (Denmark, Estonia, Finland, Iceland, Latvia, Lithuania, Norway, Sweden), and possibly others, to join participating G7 members in a Shadow Fleet Task Force to enhance monitoring and detection and to otherwise constrain the use of shadow fleets engaged in illegal, unsafe or environmentally perilous activities, building on the work of others active in this area. The Task Force will constitute a response by the participating States to the call by the International Maritime Organization in its Resolution A.1192(33) of 6 December 2023 for Members States and all relevant stakeholders to promote actions to prevent illegal operations in the maritime sector by shadow fleets and their flag states, including illegal operations for the purposes of circumventing sanctions, evading compliance with safety or environmental regulations, avoiding insurance costs, or engaging in other illegal activities.
Enhancing Maritime Supply Chain Resilience and Energy and Food Security: Maritime supply chains will continue to underpin the global economy, but these face a variety of threats, both present and future, stemming from both geopolitical tensions and environmental factors. Maritime disruptions raise consumer costs, increase transit times, and can reduce demand in importing countries, which in turn means lower revenues and diminished competitiveness for producers in exporting countries. Such vulnerabilities in maritime transport can undermine energy and food security, particularly for developing nations reliant on stable shipping routes, including Small Island Developing States (SIDS) and Least Developed Countries (LDCs). We welcome maritime initiatives involving and supported by G7 partners intended to promote energy and food security, such as the Grain from Ukraine scheme, and the ASEAN Outlook on the Indo-Pacific. We invite cooperation with the African Union (pursuant to Africa’s Integrated Maritime Strategy 2050) and other relevant International Organizations to identify best practices for enhancing maritime supply chain resilience and for safeguarding energy and food security, including in times of geopolitical crisis.
Promoting Safe and Resilient Ports and Strategic Waterways: Port ownership and operational control matter to national security, as foreign control or influence over critical port infrastructure can create vulnerabilities in trade, in defense and security, and in economic stability. Port resilience is also crucial to economic stability and global trade and yet ports face growing risks from environmental degradation, extreme weather events and geopolitical conflicts. Strengthening port security and modernizing infrastructure are essential to maintaining safe and efficient maritime trade. Ensuring that the ownership and management of strategic waterways and key maritime choke points are not vulnerable to undue influence by potential adversaries is also essential to national security. We underscore the importance of scrutiny of ownership structures and port management and resilience within our own national jurisdictions, including with regard to Information and Communications Technology (ICT) systems, to ensure that adversaries do not gain leverage over supply chains, military operations, or the flow of strategic resources. We will work with partners and with relevant International Organizations to encourage robust cybersecurity standards for port ICT infrastructure, to increase resilience against malicious cyber incidents on maritime logistical networks, to reduce monopolistic power over key supply chain nodes, to promote secure and transparent port ownership, to limit unsolicited or undue foreign influence over critical infrastructures and strategic waterways, and to otherwise encourage greater focus on such potential vulnerabilities.
Unexploded Ordnance (UXO) at sea poses a significant hazard to the marine environment, to the safety of fishermen and other users of the maritime space, and to various marine economic activities. We commit to enhancing diplomatic efforts and to exchanging best practices among national authorities, relevant international and regional organizations, and relevant industry sectors to accelerate the clean-up of UXO from the seas and ocean.
Sustainable Stewardship of Maritime Resources
Strengthen Enforcement Against IUU Fishing: IUU fishing is a major contributor to declining fish stocks and to marine habitat destruction. It may account for a third of all fishing activity worldwide, at a cost to the global economy of more than US$23 billion per year and with negative consequences for fisheries as an enduring economic asset, including for developing countries. We welcome the Canadian-led Dark Vessel Detection System in Ecuador, Peru, Costa Rica, the Philippines, and members of the Pacific Islands Forum (PIF) and would see value in replicating the model to support other partners whose fisheries are under threat from IUU fishing. We recognize that data sharing and transparency play a key role in this fight by exposing bad actors and that technological advances can support a robust Monitoring, Control and Surveillance and enforcement landscape. We encourage further progress in addressing IUU fishing, working with and through relevant International Organizations to establish and strengthen rules to sustainably manage fish stocks on the high seas and to improve the enforcement of these measures, including through the further development of detection technologies, aircraft patrols and high seas boarding and inspection of vessels, building upon the 2022 G7 Ocean Deal.
We welcome the Third UN Ocean Conference, in Nice, France, from 9 to 13 June 2025.
PARTNERSHIPS
This G7 Maritime Security and Prosperity Declaration provides a framework for cooperation with non-G7 Partners, including countries hosting major ports, large merchant fleets, or extensive flag registries as well as relevant regional and International Organizations, such as the International Maritime Organization and ASEAN. We would welcome robust cooperation with Partners to take forward the goals set out in this Declaration, consistent with the principles of sovereignty and territorial integrity, under the efforts of the G7 countries, including a free, open, prosperous and secure Indo-Pacific region, to build a free and open maritime order based on the rule of law, and of commitment to the sustainable development of the world’s maritime spaces.
We welcome the cooperation on Coast Guard Functions, including the Global Coast Guard Forum hosted by Italy in 2025, as well as the Arctic Coast Guard Forum, which could also support the objectives of this Declaration.
These Landsat 7 images showcase the first and last captures of the Las Vegas area, taken on July 4, 1999, and May 28, 2024, respectively. The images highlight the city, the surrounding desert landscape, and Lake Mead, using shortwave infrared (SWIR), near-infrared (NIR), and red bands to emphasize differences in vegetation, water, and urban growth. The final image, marking the satellite’s 25th anniversary, stands as a tribute to Landsat 7’s quarter-century legacy of Earth observation.
While Landsat 7’s long watch over Earth comes to an end, Landsat 8, launched in 2013, and Landsat 9, launched in 2020, continue to work together to create a complete snapshot of Earth every eight days. Their successor—Landsat Next—is currently planned to launch in the early 2030s and provide even greater coverage and detail.
Launched in 1999 as a joint mission of the USGS and NASA, Landsat 7 significantly enhanced Earth observations and provided a key part of the Landsat program’s five decade-plus record of imaging the planet’s surface. The satellite’s imagery will remain archived at the USGS Earth Resources Observation and Science Center, continuing to support scientific discovery and decision-making for the future.
“The Landsat satellites have delivered over 50 years of extraordinary science data, economic value and national security benefits by informing decisions in every sector of the economy—from monitoring drought in the West to guiding disaster recovery,” said Sarah Ryker, USGS Acting Director. “For 25 of those years, Landsat 7’s data helped farmers, land managers, city planners, and scientists, as well as communities around the world better understand and manage land, water, and other natural resources.”
Landsat 7 achieved many milestones over its 25 years of operation and was the first Landsat to downlink data to the newly established USGS ground station in Sioux Falls, South Dakota. It was also the first Landsat satellite to be fully operated 24/7 by the USGS after being launched by NASA.
Its Enhanced Thematic Mapper Plus sensor delivered improved high-resolution imagery that expanded its capabilities, capturing critical historical events such as the aftermath of 9/11, Hurricane Katrina, and the Deepwater Horizon oil spill. The satellite also contributed to important projects, including the Landsat Image Mosaic of Antarctica, and inspired the “Earth As Art” collection, showcasing stunning visuals of the planet.
After ending its official mission in 2024, the USGS prepared Landsat 7 for decommissioning to follow responsible space practices and U.S. policies on keeping space clear of debris. The final steps included carefully lowering the satellite’s orbit to decrease the risk of collisions and ensuring that all energy sources, such as fuel and batteries, are depleted to prevent the satellite from accidentally turning back on or creating debris. As Landsat 7 begins this decommissioned phase, it will drift silently in orbit for about 55 years before reentering Earth’s atmosphere.
To learn more about Landsat 7’s distinguished mission, visit: LINK TO CENTER STORY
Source: Moscow Government – Government of Moscow –
The annual book festival will be held in Moscow from June 4 to 7 “Red Square”. This year it is dedicated to the 80th anniversary of the victory in the Great Patriotic War and the Year of the Defender of the Fatherland. The event traditionally takes place on Red Square at the beginning of summer and is timed to coincide with the birthday of Alexander Pushkin and the Day of the Russian Language.
“Moscow libraries under the Department of Culture have prepared more than 100 events for guests of the Red Square book festival. They will be able to attend walking lectures, an interactive performance and other events. In addition, they have prepared fresh new books from publishers,” said the Minister of the Moscow Government, head of the Moscow Department of Culture
Guests can expect theatrical performances, poetry readings, concerts, lectures and book presentations. In addition, everyone will be able to apply for a single library card.
This year, the program for the Small Stage and Library venues is being prepared by the Moscow Directorate for the Development of Cultural Centers (State Budgetary Cultural Institution of the City of Moscow Mosrazvitie), subordinate to the capital’s To the Department of Culture.
Performances and creative meetings
On the first day of the festival, June 4, at 12:00, actors from the youth theater “Chekhov’s Attic” will show a play based on Anton Chekhov’s stories “Two Jokes”. In honor of the 165th anniversary of the author’s birth, they will perform two plays based on humorous stories – “The Bear” and “The Proposal”.
At 13:00, the theatre studio “Theatre named after Menya” will show the stage production “Manifestation”, which tells about the invention of the camera and photographic film.
The performance based on Alexander Pushkin’s poem “Gypsies” will be shown by the youth project “Open Theater” at 14:00. The director and performer is Ekaterina Buyanova, winner of the festivals “Yursky’s Butterfly – 2024”, “Territory of the Future. Moscow 2030” in Zaryadye Park and “Red Square – 2024”.
At 15:00, the artists of the Satire Theatre, accompanied by an orchestra, will perform popular songs for the festival guests, including “Good evening, my city”, “In the city of happy people”, “Moscow windows” and “The best city on earth”.
A lecture dedicated to the 100th anniversary of the publication of Mikhail Bulgakov’s novel “The White Guard” will take place at 16:00. It will discuss the history of the creation of the work, as well as the events that formed the basis of the novel.
At 6:00 p.m., photographer, local historian and author of books about the capital Elena Krizhevskaya will hold a presentation entitled “Moscow Mansions, Their Owners and Architects in Stories and Photographs.” Visitors to the event will also be treated to a screening of the new book “Behind the Front Doors.”
The creative interactive meeting “A Neskuchny Gorod — Other Local History” will take place at 19:00. Guests will learn popular names of Russian streets, interesting facts about manhole covers and other attributes of cities. The meeting will be hosted by Helga Pataki — writer, director, local historian, tour guide, traveler and polar explorer, deputy director for development of the publishing house “Nastya and Nikita”.
Concerts, presentations, lectures and more
On June 5 at 10:00 a.m. the dance and poetry performance “Images. Dedication” of the creative project will begin
The artistic and literary program in honor of the 80th anniversary of the Great Victory will begin at 11:00. Actors of the “Modern” theater will show an excerpt from Olga Berggolts’s “Leningrad Speaks.” The theme of the program will be the words: “Nobody is forgotten and nothing is forgotten.”
At 13:00 you can attend a lecture-concert “Female archetypes in literature: Turgenev’s modern girl – who is she?” At the same time, Master of Philology, research fellow of the A.S. Pushkin Library Valentina Molotkova will give a lecture dedicated to the 165th anniversary of Anton Chekhov’s birth “I am forever a Muscovite”.
At 2:00 pm, poet, playwright, show host, member of the Union of Russian Writers Mikhail Slutsky will hold a presentation of the books “Hurry to Share Kindness!”. Editions for children of different ages will be presented, including “Merry ABC”, “Journey from One to Zero”, “Puzzled Tales”, “In Search of the Seven Hills”, “Flight of the Turtle” and “Antique – Ironic”.
The concert “Commanders and Muses”, dedicated to the 80th anniversary of the victory in the Great Patriotic War, will begin at 16:00. The performance will feature soloists of the “Young Opera of Russia” project and Lyubov Kazarnovskaya.
At 17:00 there will be a lecture “Ivan Vasilyevich: Leonid Gaidai vs. Mikhail Bulgakov”. Listeners will learn about Bulgakov’s comedy and Leonid Gaidai’s film.
The creative meeting “Russian victories in Antarctica” will take place at 19:00. 205 years ago, the first Russian Antarctic expedition took place. On the sloops “Vostok” and “Mirny” under the leadership of Faddey Bellingshausen and Mikhail Lazarev, the sixth continent was discovered.
The Pushkin Coats of Arms, Bulgakov’s Moscow and Fantasy for Children
On June 6 at 11:00 the musical and drama theatre “Prince on the Lighthouse” will show the play “The Nose of Varvara Sidorova”.
At 13:00 the concert “Different People” will begin. The inclusive studio “Colorit” will perform vocal and dance numbers, including “The World is Not Simple”, “Districts-Quarters”, and “My Dear Muscovites”. At 13:00 there will be a lecture “Coats of Arms of the Noble Family of Pushkin-Gannibals”. Participants of the program will be introduced to the drawings of coats of arms made by the grandson of Alexander Pushkin – Nikolai.
Illustrator and children’s writer Maria Kolker will present a new fantasy book, The Last Refuge of the Fairies, at 2:00 p.m. The work is intended for children over six years old. At the same time, contemporary Russian authors will hold a round table on teenage literature, Prose for Teens: How to Find Your Book?
At 15:00, the head of the excursion bureau of the Museum of Moscow, Andrey Klyuev, will hold a lecture entitled “The Architecture of Moscow through the Eyes of Bulgakov.” The participants will discuss the architectural image of the capital in the 1920s and 1930s — the Palace of Soviets, train stations, embankments, and former apartment buildings.
Poetry, music and storytelling: the festival finale
On June 7 at 11:00 the creative salon “Zakruzhilas slivtva zolotaya” (Golden Leaves Spun) will start its work. The meeting will be dedicated to the 130th anniversary of Sergei Yesenin’s birth. The hosts will be directors of the Sofit theater studio Tatyana Argunova and Nikolai Zozulin. The speakers will talk about the author’s childhood in the Ryazan outback and his first poetic experiences.
At the same time, a creative meeting with Andrey Osipov, Honored Artist of the Russian Federation, will begin. The event is dedicated to his film “Koktebel Stones”. The author will talk about an important episode of the film – the defense of Koktebel and Voloshin’s house from the Nazi invaders during the Great Patriotic War.
The performance “The Little Prince” based on the fairy tale by Antoine de Saint-Exupéry will begin at 12:00. Young artists will play flutes, violins, guitar and sing arias.
At 20:00, the interactive storytelling performance “Notes of a Young Doctor” will begin. Theater and film actor Konstantin Kozhevnikov will tell the story of how the young doctor Mikhail Bulgakov fought for the lives of patients at the Nikolskaya Zemstvo Hospital in 1916-1917.
At the same time, there will be a lecture entitled “Boris Pasternak – Poet and Translator”. The event is dedicated to the 135th anniversary of the birth of the Russian writer. The speaker is Vitaly Poplavsky, director-teacher, art critic, translator, playwright, member of the Shakespeare Commission of the Russian Academy of Sciences.
The full program of events can be viewed atofficial websiteEntrance to Red Square during the festival is free.
Last year, more than 300,000 people visited the Red Square festival. Over 400 publishers from 58 regions of the country presented new fiction, children’s, educational and popular science literature. The event is aimed at achieving the indicators and results of the national project “Family” in the city of Moscow.
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These changes will have huge impacts on coastal ecosystems around the world, including coral reefs. To understand these future impacts, it can be useful to understand similar events from history.
Our new research, published today in Nature Communications, does just that. It reveals how the Great Barrier Reef in northern Australia responded to a dramatic rise in sea level some 13,000 to 10,000 years ago.
A hotly debated event
Several “meltwater pulse events” have been documented in the past. These occur when ice sheets disintegrate in a catastrophic fashion, resulting in a rapid surge in global sea levels.
One of these events, known as “meltwater pulse 1B”, remains hotly debated. It occurred roughly 11,500 years ago.
Early evidence from reef cores in Barbados suggested a sharp sea-level rise of approximately 14 metres between 11,450 and 11,100 years ago, with rates of roughly 40 millimetres per year.
Remarkably, this rate is about ten times faster than the current global rise.
However, this record conflicts with others, including from Tahiti and now from the Great Barrier Reef, which suggests a more gradual rise in sea levels.
Learning from geological archives
Somewhat paradoxically shallow-water reef systems can “drown” because corals, and other reef organisms, depend on light for photosynthesis. If the water gets too deep too fast, the reef will no longer keep up with the rise and it will drown.
But drowning can also occur due to other factors, such as increased temperature, sediment and nutrients, which can also add extra environmental stress to the reef – again making it more difficult to grow vertically and keep up with sea level rise.
Cores gathered from drowned fossil coral reefs preserved along the continental shelf edge of the Great Barrier Reef contain crucial information about historic corals, coralline algae and microbial reef structures known as microbialites. They offer a unique geologic time machine to better understand how past periods of rapid global sea level rise affected reef growth.
These geological archives also provide important clues about how ice sheets behaved in response to rapid global warming.
In 2010, an expedition of the Integrated Ocean Drilling Program used a geotechnical drill ship to sample below the seafloor and reconstruct the growth and demise of the Great Barrier Reef over the past roughly 30,000 years. Five distinct stages were identified in response to major global climatic and oceanographic disturbances.
In this new study, we focused on a key reef stage called Reef 4. It formed between 13,000 and 10,000 years ago, just prior to the start of the modern reef as we know it.
We refer to this reef as the “proto-Great Barrier Reef”. Once a shallow-water barrier reef system, it now exists in a fossilised form at roughly 50 metres water depth and is now the home to deeper reef communtites in the mesophotic zone 30 to 150 metres below the surface.
The RV Great Ship Maya was used to recover fossil reef samples from the Great Barrier Reef in 2010. G.Tulloch/European Consortium for Ocean Research Drilling/Integrated Ocean Drilling Program
An impressive ability to keep pace
Our study shows the Great Barrier Reef didn’t drown during meltwater pulse 1B. In fact, it continued to thrive with clear evidence of healthy, shallow-water reef assemblages (living in waters less than ten metres deep) persisting right through the rise in sea levels.
The reef not only survived but continued to grow upwards at rates between 4–6 millimetres per year. This rate of growth is comparable to modern healthy reef growth rates, demonstrating an impressive ability to keep pace.
We also calculated that the maximum possible sea-level rise during meltwater pulse 1B was between 7.7 and 10.2 metres over roughly 350 years. This equates to between 23 and 30 millimetres per year, but was likely less.
This is less than the Barbados estimate, and more consistent with observations from Tahiti where no sharp sea-level jump was found.
Importantly, this indicates that even the upper sea level rise bounds are within the survival limits of resilient reef systems such as the Great Barrier Reef – especially when environmental stressors, such as ocean warming, ocean acidification and sedimentation are low.
UNESCO’s World Heritage Committee recently expressed utmost concern about the current state of the Great Barrier Reef. Darkydoors/Shutterstock
Limits to a reef’s resilience
Although the Great Barrier Reef survived sea level rise roughly 11,000 years ago, the world was very different back then.
Coral reefs faced less stress from human impacts. And ocean temperatures were rising more slowly.
But today’s reefs are already struggling, with UNESCO’s World Heritage Committee recently expressing “utmost concern” about the state of the Great Barrier Reef in particular.
This is due to warming, acidification and pollution. And these additional challenges decrease reefs’ ability to cope with rapid sea-level rise.
Our findings suggest abrupt sea-level jumps of more than 11 metres are unlikely to occur without major instabilities in ice sheets. The fact that such collapses likely didn’t happen during meltwater pulse 1B offers some reassurance. But we’re in uncharted territory now, particularly with the Antarctic ice sheet displaying early signs of instability.
Our study also shows the Great Barrier Reef has been remarkably resilient, adapting to changing sea levels and continuing to grow even as the ocean rose rapidly. This resilience, however, had limits. Ultimately, the reef we examined drowned roughly 10,000 years ago, likely due to a combination of environmental stressors, including increased sediment flux. At this time the shallow water reef ecosystem migrated landward to form the modern Great Barrier, leaving behind only deeper, mesophotic reef communities.
The lessons from the past are clear: reefs can adapt to environmental changes but there are limits.
Protecting modern reefs will require more than understanding their past. It means reducing emissions and limiting other environmental stresses such as sediment and nutrient runoff where possible.
Jody Webster receives funding from the Australian Research Council and ANZIC IODP.
Juan Carlos Braga receives funding from the Australian Research Council and Spanish Government.
Marc Humblet receives funding from the Japan Society for the Promotion of Science.
Stewart Fallon receives funding from the Australian Research Council and ANZIC IODP.
Yusuke Yokoyama receives funding from the Japan Society for the Promotion of Science and Japan Science and Technology Agency.
The search for life beyond Earth is a key driver of modern astronomy and planetary science. The U.S. is building multiple major telescopes and planetary probes to advance this search. However, the signs of life – called biosignatures – that scientists may find will likely be difficult to interpret. Figuring out where exactly to look also remains challenging.
My colleagues and I have developed a new approach that will identify the most interesting planets or moons to search for life and help interpret potential biosignatures. We do this by modeling how different organisms may fare in different environments, informed by studies of limits of life on Earth.
New telescopes to search for life
Astronomers are developing plans and technology for increasingly powerful space telescopes. For instance, NASA is working on its proposed Habitable Worlds Observatory, which would take ultrasharp images that directly show the planets orbiting nearby stars.
My colleagues and I are developing another concept, the Nautilus space telescope constellation, which is designed to study hundreds of potentially Earthlike planets as they pass in front of their host stars.
Future telescopes, like the proposed Nautilus, could help search the skies for habitable planets. Katie Yung, Daniel Apai /University of Arizona and AllThingsSpace /SketchFab, CC BY-ND
These and other future telescopes aim to provide more sensitive studies of more alien worlds. Their development prompts two important questions: “Where to look?” and “Are the environments where we think we see signs of life actually habitable?”
Oxford Languages defines “habitable” as “suitable or good enough to live in.” But how do scientists know what is “good enough to live in” for extraterrestrial organisms? Could alien microbes frolic in lakes of boiling acid or frigid liquid methane, or float in water droplets in Venus’ upper atmosphere?
To keep it simple, NASA’s mantra has been “follow the water.” This makes sense – water is essential for all Earth life we know of. A planet with liquid water would also have a temperate environment. It wouldn’t be so cold that it slows down chemical reactions, nor would it be so hot that it destroys the complex molecules necessary for life.
However, with astronomers’ rapidly growing capabilities for characterizing alien worlds, astrobiologists need an approach that is more quantitative and nuanced than the water or no-water classification.
A community effort
As part of the NASA-funded Alien Earths project that I lead, astrobiologist Rory Barnes and I worked on this problem with a group of experts – astrobiologists, planetary scientists, exoplanet experts, ecologists, biologists and chemists – drawn from the largest network of exoplanet and astrobiology researchers, NASA’s Nexus for Exoplanet System Science, or NExSS.
Over a hundred colleagues provided us with ideas, and two questions came up often:
First, how do we know what life needs, if we do not understand the full range of extraterrestrial life? Scientists know a lot about life on Earth, but most astrobiologists agree that more exotic types of life – perhaps based on different combinations of chemical elements and solvents – are possible. How do we determine what conditions those other types of life may require?
Second, the approach has to work with incomplete data. Potential sites for life beyond Earth – “extrasolar habitats” – are very difficult to study directly, and often impossible to visit and sample.
For example, the Martian subsurface remains mostly out of our reach. Places like Jupiter’s moon Europa’s and Saturn’s Moon Enceladus’ subsurface oceans and all extrasolar planets remain practically unreachable. Scientists study them indirectly, often only using remote observations. These measurements can’t tell you as much as actual samples would.
To make matters worse, measurements often have uncertainties. For example, we may be only 88% confident that water vapor is present in an exoplanet’s atmosphere. Our framework has to be able to work with small amounts of data and handle uncertainties. And, we need to accept that the answers will often not be black or white.
First, we moved away from trying to answer the vague “habitable to life” question and narrowed it to a more specific and practically answerable question: Would the conditions in the habitat – as we know them – allow a specific (known or yet unknown) species or ecosystem to survive?
Even on Earth, organisms require different conditions to survive – there are no camels in Antarctica. By talking about specific organisms, we made the question easier to answer.
Second, the quantitative habitability framework does not insist on black-or-white answers. It compares computer models to calculate a probabilistic answer. Instead of assuming that liquid water is a key limiting factor, we compare our understanding of the conditions an organism requires (the “organism model”) with our understanding of the conditions present in the environment (the “habitat model”).
Both have uncertainties. Our understanding of each can be incomplete. Yet, we can handle the uncertainties mathematically. By comparing the two models, we can determine the probability that an organism and a habitat are compatible.
As a simplistic example, our habitat model for Antarctica may state that temperatures are often below freezing. And our organism model for a camel may state that it does not survive long in cold temperatures. Unsurprisingly, we would correctly predict a near-zero probability that Antarctica is a good habitat for camels.
We had a blast working on this project. To study the limits of life, we collected literature data on extreme organisms, from insects that live in the Himalayas at high altitudes and low temperatures to microorganisms that flourish in hydrothermal vents on the ocean floor and feed on chemical energy.
We explored, via our models, whether they may survive in the Martian subsurface or in Europa’s oceans. We also investigated if marine bacteria that produce oxygen in Earth’s oceans could potentially survive on known extrasolar planets.
Although comprehensive and detailed, this approach makes important simplifications. For example, it does not yet model how life may shape the planet, nor does it account for the full array of nutrients organisms may need. These simplifications are by design.
In most of the environments we currently study, we know too little about the conditions to meaningfully attempt such models – except for some solar system bodies, such as Saturn’s Enceladus.
The quantitative habitability framework allows my team to answer questions like whether astrobiologists might be interested in a subsurface location on Mars, given the available data, or whether astronomers should turn their telescopes to planet A or planet B while searching for life. Our framework is available as an open-source computer model, which astrobiologists can now readily use and further develop to help with current and future projects.
If scientists do detect a potential signature of life, this approach can help assess if the environment where it is detected can actually support the type of life that leads to the signature detected.
Our next steps will be to build a database of terrestrial organisms that live in extreme environments and represent the limits of life. To this data, we can also add models for hypothetical alien life. By integrating those into the quantitative habitability framework, we will be able to work out scenarios, interpret new data coming from other worlds and guide the search for signatures of life beyond Earth – in our solar system and beyond.
Daniel Apai receives funding from NASA, Heising-Simons Foundation, Department of Defense, Space Telescope Science Institute, and the University of Arizona, and leads the NASA-funded Alien Earths astrobiology research team that developed the framework described here. He is affiliated with the Steward Observatory and Lunar and Planetary Laboratory of The University of Arizona.
These changes will have huge impacts on coastal ecosystems around the world, including coral reefs. To understand these future impacts, it can be useful to understand similar events from history.
Our new research, published today in Nature Communications, does just that. It reveals how the Great Barrier Reef in northern Australia responded to a dramatic rise in sea level some 13,000 to 10,000 years ago.
A hotly debated event
Several “meltwater pulse events” have been documented in the past. These occur when ice sheets disintegrate in a catastrophic fashion, resulting in a rapid surge in global sea levels.
One of these events, known as “meltwater pulse 1B”, remains hotly debated. It occurred roughly 11,500 years ago.
Early evidence from reef cores in Barbados suggested a sharp sea-level rise of approximately 14 metres between 11,450 and 11,100 years ago, with rates of roughly 40 millimetres per year.
Remarkably, this rate is about ten times faster than the current global rise.
However, this record conflicts with others, including from Tahiti and now from the Great Barrier Reef, which suggests a more gradual rise in sea levels.
Learning from geological archives
Somewhat paradoxically shallow-water reef systems can “drown” because corals, and other reef organisms, depend on light for photosynthesis. If the water gets too deep too fast, the reef will no longer keep up with the rise and it will drown.
But drowning can also occur due to other factors, such as increased temperature, sediment and nutrients, which can also add extra environmental stress to the reef – again making it more difficult to grow vertically and keep up with sea level rise.
Cores gathered from drowned fossil coral reefs preserved along the continental shelf edge of the Great Barrier Reef contain crucial information about historic corals, coralline algae and microbial reef structures known as microbialites. They offer a unique geologic time machine to better understand how past periods of rapid global sea level rise affected reef growth.
These geological archives also provide important clues about how ice sheets behaved in response to rapid global warming.
In 2010, an expedition of the Integrated Ocean Drilling Program used a geotechnical drill ship to sample below the seafloor and reconstruct the growth and demise of the Great Barrier Reef over the past roughly 30,000 years. Five distinct stages were identified in response to major global climatic and oceanographic disturbances.
In this new study, we focused on a key reef stage called Reef 4. It formed between 13,000 and 10,000 years ago, just prior to the start of the modern reef as we know it.
We refer to this reef as the “proto-Great Barrier Reef”. Once a shallow-water barrier reef system, it now exists in a fossilised form at roughly 50 metres water depth and is now the home to deeper reef communtites in the mesophotic zone 30 to 150 metres below the surface.
The RV Great Ship Maya was used to recover fossil reef samples from the Great Barrier Reef in 2010. G.Tulloch/European Consortium for Ocean Research Drilling/Integrated Ocean Drilling Program
An impressive ability to keep pace
Our study shows the Great Barrier Reef didn’t drown during meltwater pulse 1B. In fact, it continued to thrive with clear evidence of healthy, shallow-water reef assemblages (living in waters less than ten metres deep) persisting right through the rise in sea levels.
The reef not only survived but continued to grow upwards at rates between 4–6 millimetres per year. This rate of growth is comparable to modern healthy reef growth rates, demonstrating an impressive ability to keep pace.
We also calculated that the maximum possible sea-level rise during meltwater pulse 1B was between 7.7 and 10.2 metres over roughly 350 years. This equates to between 23 and 30 millimetres per year, but was likely less.
This is less than the Barbados estimate, and more consistent with observations from Tahiti where no sharp sea-level jump was found.
Importantly, this indicates that even the upper sea level rise bounds are within the survival limits of resilient reef systems such as the Great Barrier Reef – especially when environmental stressors, such as ocean warming, ocean acidification and sedimentation are low.
UNESCO’s World Heritage Committee recently expressed utmost concern about the current state of the Great Barrier Reef. Darkydoors/Shutterstock
Limits to a reef’s resilience
Although the Great Barrier Reef survived sea level rise roughly 11,000 years ago, the world was very different back then.
Coral reefs faced less stress from human impacts. And ocean temperatures were rising more slowly.
But today’s reefs are already struggling, with UNESCO’s World Heritage Committee recently expressing “utmost concern” about the state of the Great Barrier Reef in particular.
This is due to warming, acidification and pollution. And these additional challenges decrease reefs’ ability to cope with rapid sea-level rise.
Our findings suggest abrupt sea-level jumps of more than 11 metres are unlikely to occur without major instabilities in ice sheets. The fact that such collapses likely didn’t happen during meltwater pulse 1B offers some reassurance. But we’re in uncharted territory now, particularly with the Antarctic ice sheet displaying early signs of instability.
Our study also shows the Great Barrier Reef has been remarkably resilient, adapting to changing sea levels and continuing to grow even as the ocean rose rapidly. This resilience, however, had limits. Ultimately, the reef we examined drowned roughly 10,000 years ago, likely due to a combination of environmental stressors, including increased sediment flux. At this time the shallow water reef ecosystem migrated landward to form the modern Great Barrier, leaving behind only deeper, mesophotic reef communities.
The lessons from the past are clear: reefs can adapt to environmental changes but there are limits.
Protecting modern reefs will require more than understanding their past. It means reducing emissions and limiting other environmental stresses such as sediment and nutrient runoff where possible.
Jody Webster receives funding from the Australian Research Council and ANZIC IODP.
Juan Carlos Braga receives funding from the Australian Research Council and Spanish Government.
Marc Humblet receives funding from the Japan Society for the Promotion of Science.
Stewart Fallon receives funding from the Australian Research Council and ANZIC IODP.
Yusuke Yokoyama receives funding from the Japan Society for the Promotion of Science and Japan Science and Technology Agency.
Source: People’s Republic of China in Russian – People’s Republic of China in Russian –
Source: People’s Republic of China – State Council News
ALMATY, May 30 (Xinhua) — The first International High-Level Conference on Glacier Protection was held in Tajikistan’s capital Dushanbe on Friday, the Khovar news agency reported.
The forum, held in Kokhi Somon, the seat of the Government of Tajikistan, brought together more than 2,500 experts from 80 countries, heads of government delegations, high-ranking representatives of regional and international organizations, research institutes and development partners.
The conference included two thematic sessions: “Glaciers, Arctic and Antarctic ice sheets, the threat of sea level rise and strategies for small island developing states” and “From glaciers to the sea: glaciers, snow cover and water availability in the context of climate change”.
The conference was organized within the framework of the International Year of Glacier Conservation on the initiative of the President of Tajikistan Emomali Rahmon, supported at the 77th session of the UN General Assembly. –0–
ER Report: Here is a summary of significant articles published on EveningReport.nz on May 29, 2025.
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After a chaotic 6 months, South Koreans will elect a new president – and hope for bold leadership Source: The Conversation (Au and NZ) – By Alexander M. Hynd, Lecturer, Korean Politics/International Relations, The University of Melbourne On June 3, South Koreans will head to the polls to choose the country’s new president. The election may draw to a close one of the most chaotic and contentious periods in the country’s post-1987 democratic
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Can your cat recognise you by scent? New study shows it’s likely Source: The Conversation (Au and NZ) – By Julia Henning, PhD Candidate in Feline Behaviour, School of Animal and Veterinary Science, University of Adelaide Ever wonder if your cat could pick you out of a line up? New research suggests they could … but maybe not in the way you would expect. Previous research has
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Behind the wellness industry’s scented oils and soothing music are often underpaid, exploited workers Source: The Conversation (Au and NZ) – By Rawan Nimri, Lecturer in Tourism and Hospitality, Griffith University Prostock Studio/Shutterstock Wellness tourism is booming. Think yoga retreats in Bali, digital detox weekends in a rainforest, or a break on a luxury island to “find yourself”. It’s no longer just about taking selfies at the beach or
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Antarctica’s sea ice is changing, and so is a vital part of the marine food web that lives within it Source: The Conversation (Au and NZ) – By Jacqui Stuart, Postdoctoral Researcher in Marine Ecology, Te Herenga Waka — Victoria University of Wellington Jacqui Stuart, VUW, CC BY-NC-ND Antarctica is the world’s great cooling unit. This vital part of Earth’s climate system is largely powered by the annual freeze and melt of millions of square
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Source: The Conversation (Au and NZ) – By Jacqui Stuart, Postdoctoral Researcher in Marine Ecology, Te Herenga Waka — Victoria University of Wellington
Antarctica is the world’s great cooling unit. This vital part of Earth’s climate system is largely powered by the annual freeze and melt of millions of square kilometres of sea ice around the continent.
Our research shows changes to this annual freeze cycle in McMurdo Sound can lead to shifts in the diversity of algal communities that live within the sea ice.
At the start of the southern winter, as sea water begins to freeze, it expels salt and forms heavy and very cold brine. This sinks to the seafloor, ultimately forming what’s known as Antarctic Bottom Water. This is then pumped out to the rest of the world through several major oceanic currents.
Historically, this cycle meant that Antarctica effectively doubled in size and the continent was surrounded by an enormous apron of sea ice at the peak of winter. But the changing climate is shifting this annual cycle.
Major ocean currents transport cold Antarctic Bottom Water out to the rest of the world. Jacqui Stuart, VUW, CC BY-NC-ND
For the past decade, Antarctic sea ice has been in decline. It hasn’t been a steady trend, but each year since 2016 less sea ice has formed compared to historic averages.
Antarctica’s annual maximum sea ice extent in September 2023 was the lowest on record, with approximately 1.75 million square kilometres less sea ice than normal – an area equivalent to about 6.5 times the land area of Aotearoa.
Change happening at the continental scale is usually well documented and publicised. However, smaller, more local changes are also occurring in places such as McMurdo Sound, the home of Aotearoa New Zealand’s only Antarctic outpost.
For four of the last seven years, unseasonable winter southerly storms have been associated with significant delays in the timing of sea-ice formation within McMurdo Sound.
Where measurements were taken during these “unusual” years, the sea ice that formed later was thinner (1.5 metres compared to 2.5 metres) and had less snow cover (about 5 centimetres versus 15-30 centimetres) compared to the same locations during “typical” years.
Ken Ryan and Jacqui Stuart measuring the depth of sea ice and the sub-ice platelet layer in McMurdo Sound in 2022. Svenja Halfter, NIWA, CC BY-NC-ND
Icy reefs and algal meadows
Another type of ice, known as “platelet ice”, also appears to be affected by the later formation of sea ice.
A layer of platelet ice extends into the ocean below the sea ice in some regions around Antarctica, including McMurdo Sound. It is a fragile lattice structure made up of loosely consolidated plate-shaped ice crystals, creating an upside-down reef-like structure.
The resulting protective environment is a hot spot for primary productivity – microscopic algae that support the base of the marine food web. When sea ice forms later, the platelet ice doesn’t have as much time to accumulate beneath and can be metres thinner than beneath older ice (down to about 1 metre from more than 3 metres).
Scientist collecting cores of sea ice in McMurdo Sound. Jacqui Stuart, VUW, CC BY-NC-ND
Why should we care about sea ice? Because, it isn’t just a frozen, lifeless sheet expanding out from the continent, broken by the odd silhouette of a seal or a gathering of penguins on the top.
Beneath the desolate surface, where ice meets water, green meadows of microalgae can spread out as far as the eye can see.
View from under the sea ice in McMurdo Sound, with the sub-ice platelet layer extending down into the water. The green-yellow tinge shows thriving microalgae living within the reef-like structure. Leigh Tate, NIWA, CC BY-NC-ND
Microalgae are single-cell, plant-like organisms that use sunlight to create energy. Similar to land-based meadows, they provide food for many other creatures. In winter, when other sources of food can be scarce, this sea-ice superstore plays a crucial role in feeding other inhabitants of McMurdo Sound.
Diminishing algal diversity under thinner sea ice
Our research indicates that when the sea ice forms later, microalgal communities living within the ice are also different. In later-forming sea ice, these vital communities are less diverse and dominated by fewer species.
Some species usually abundant in earlier-forming sea ice are absent or in low numbers when the sea ice forms later. Interestingly, though, it appears the quantity of microalgae in later-forming ice conditions is similar to “typical” ice. However, instead of being spread out through almost three metres depth of the platelet layer, they are crammed into a metre-thick habitat instead.
These microscopic snacks are diverse in shape, size and the roles they play in the ecosystem. It can help to think of microalgal communities as the produce section in the supermarket. Each type has preferred growing conditions and different nutritional values, producing varied quantities of important resources such as proteins, carbohydrates and fatty acids.
Microalgae come in different shapes, sizes and nutritional content, like fruits and vegetables. Jacqui Stuart, VUW, CC BY-NC-ND
Imagine, one winter the weather is different and all that grows are cabbages and sweet peas. These won’t provide you with all the nutrients you need. This mirrors the problem when there is less diversity at the base of the food web. As the microalgal communities shift in the ways our research has observed, the quantity and quality of resources they provide are likely to change, too.
These early signals matter. They foreshadow wider ecological impacts, especially, if Antarctic sea ice continues to thin, retreat or form later each year.
We need more research to establish the nuances of these changes and the extent of their impact. But it is worth remembering that what happens at the base of the food web in Antarctica doesn’t necessarily stay there. These changes could ripple through ecosystems further afield with the potential to affect key fisheries in the Southern Ocean.
By paying close attention now, we have a chance to understand and adapt, to ensure ecosystems stay resilient in a changing world.
Natalie Robinson receives funding from the Marsden Fund and Antarctic Science Platform. She is affiliated with New Zealand Antarctic Society.
Jacqui Stuart does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.
The Ministry of Earth Sciences (MoES) is an executive ministry of the Government of India, established on 29 January, 2006.
The Ministry of Earth Sciences is mandated to provide services for weather, climate, ocean and coastal state, hydrology, seismology, and natural hazards; to explore and harness marine living and non-living resources in a sustainable manner for the country and to explore the three poles of the Earth (Arctic, Antarctic and Himalayas).
MoES was formerly the Department of Ocean Development (DOD), which was created in July 1981 as a part of the Cabinet Secretariat directly under the charge of the Prime Minister of India. It came into existence as a separate department in March 1982. The erstwhile DOD functioned as a nodal institution for organizing, coordinating and promoting ocean development activities in the country. The Government of India notified DOD as the Ministry of Ocean Development in February 2006.
The Australian ice-breaker RSV Nuyina, cruising around Antarctica.Pete Harmsen/Australian Antarctic Division
A little-known ocean current surrounds Antarctica, shielding it from warm water further north. But our new research shows Antarctica’s melting ice is disrupting this current, putting the continent’s last line of defence at risk.
We found meltwater from Antarctica is speeding up the current, known as the Antarctic Slope Current. And it’s set to become even faster by mid-century.
A faster current could be more unstable. This means eddies of warm water could eat away at Antarctica’s ice, posing a major concern for the stability of the Earth’s climate system.
Faster ice-melt means faster sea-level rise. Humanity must act now to preserve this natural phenomena that helps Antarctica’s ice shelves remain intact.
The Antarctic Slope Current moves ocean water westward over the continental slope, close to the coast. Ellie Ong
Previous research has shown meltwater is also slowing the global network of deep ocean currents. These currents transport water, heat and nutrients around the planet, so a global slow-down has huge ramifications.
It’s therefore crucial to reduce further loss of Antarctic ice, to stabilise our global climate system.
The Antarctic Slope Current moves ocean water westward over the continental slope, close to the coast. It acts as a barrier, preventing warm waters from further north from reaching the ice.
In this way, the current provides an important line of defence keeping warmer water at bay. It doesn’t stop Antarctica from melting, because warming air temperatures still cause this. But it slows the process.
However, our research shows this defence is under threat.
Ships cruising around Antarctica often encounter the Antarctic Slope Current. Pete Harmsen/Australian Antarctic Division
What we did
We wanted to find out how the Antarctic Slope Current will respond to changes in wind, heat, and meltwater as the climate changes. We did this using high-resolution ocean-sea ice models.
The meltwater makes the ocean around Antarctica less salty. This makes the waters closer to the coast less dense, changing the structure of the Antarctic Slope Current and speeding it up.
The models predicted a 14% increase in the speed of the current over the past 25 years and a 49% increase over the next 25 years.
But meltwater from Antarctic ice has another effect too. We found the added water also slows down the movement of dense, salty coastal water in “waterfalls” running off the Antarctic coast that feeds into the global overturning current network.
When these waterfalls of dense water slow down, warmer waters are able to flow closer to the Antarctic continent.
Together, these changes compound and cause the Antarctic Slope Current to speed up even more.
A complex story
It might be assumed the changes we modelled would be a good thing for Antarctica. That’s because the stronger the Antarctic Slope Current, the stronger the barrier between Antarctica and the warm waters to the north.
But there’s more to the story. When ocean currents flow faster, they become more turbulent –generating vigorous eddies or whirlpools.
You can see this effect if you rapidly run your hand through a bathtub of water. Watch for the dynamic, circular whirlpools in your hand’s wake.
Around Antarctica, whirlpools or eddies can move large amounts of warm water towards the poles. This can make melting worse.
So although a stronger current might be expected to act as a better shield for Antarctica, the extra eddies in its wake can have the opposing effect. These eddies can amplify the transport of heat towards Antarctica, increasing melting.
Eddies/whirlpools in the Southern Ocean around Antarctica.
Why this matters
No matter how uncertain Antarctica’s future may be, one thing is clear: this frozen frontier is crucial to the stability of our global climate.
The Antarctic Slope Current was once a steadfast guardian of the icy continent. But now the current is being transformed by the very ice it protects.
Humanity must act fast to preserve the current, by cutting carbon emissions. When it comes to Antarctica, this action isn’t optional — it’s the only way to hold the line.
Ellie Ong receives funding from the Australian Research Council and an Australian Government Research and Training Program Scholarship.
Edward Doddridge receives funding from the Australian Research Council.
Matthew England receives funding from the Australian Research Council.
Navid Constantinou receives funding from the Australian Research Council.
Union Minister Dr. Jitendra Singh on Tuesday inaugurated Sagar Bhavan and Polar Bhavan at the National Centre for Polar and Ocean Research (NCPOR) in Goa. These are the first-of-their-kind integrated facilities in India and among the few such infrastructures globally dedicated to polar and ocean research.
The inauguration comes at a time when global discourse on ocean geopolitics is intensifying. Addressing the gathering, Dr. Singh expressed confidence that the enhanced capabilities at NCPOR would strengthen India’s role in global ocean governance and scientific collaboration. “Institutions like NCPOR will be pivotal in positioning India as a key player in ocean geopolitics,” the Minister said.
He added that the new facilities would also enhance India’s capacity to monitor weather patterns and respond to climate change challenges effectively.
The newly inaugurated Polar Bhavan is the largest building on the NCPOR campus, spread across 11,378 square metres and constructed at a cost of ₹55 crore. It houses cutting-edge laboratories for polar and ocean research, 55 accommodation units for scientists, conference and seminar halls, a library, and a canteen. It is also home to the “Science On Sphere (SOS)” platform – a state-of-the-art 3D visualization system for displaying climate and earth system data – and will soon host India’s first Polar and Ocean Museum.
Sagar Bhavan, built over 1,772 square metres at a cost of ₹13 crore, includes ultra-low temperature laboratories with -30°C ice core storage and +4°C sample preservation units. It features 29 specialised rooms, including a Class 1000 clean room for trace metal and isotope studies.
During his visit, Dr. Singh, dressed in Antarctica-specific cold weather gear, also toured the Minus 20°C lab section of the facility.
The inauguration coincided with the Silver Jubilee of NCPOR. As part of the celebrations, the Minister unveiled a documentary chronicling the institute’s 25-year journey and participated in a virtual walkthrough of the upcoming science museum.
Dr. Singh underscored the significance of polar research in the context of global climate change. He cited expert assessments indicating that nearly 70% of the world’s freshwater is stored in polar ice. “Uncontrolled melting could lead to rising sea levels, posing serious threats to low-lying coastal areas, including India’s extensive coastline of over 1,000 km,” he said.
Highlighting the importance of ocean sciences in national development, the Minister referred to Prime Minister Narendra Modi’s consistent focus on the Blue Economy. He noted that the Deep Ocean Mission, led by NCPOR, aligns with the government’s broader “Viksit Bharat by 2047” vision.
Dr. Singh also referenced India’s policy initiatives such as the Arctic Policy (2022) and the Indian Antarctic Act (2022), which provide a structured legal and ethical framework for India’s polar engagement, ensuring adherence to international standards.
India maintains a robust research presence in polar and high-altitude regions through its permanent stations in Antarctica (Maitri and Bharati), the Arctic (Himadri), and the Himalayas (Himansh). Recent Indian scientific expeditions have also extended to the Canadian Arctic, Greenland, and the Central Arctic Ocean.
Source: Australian Criminal Intelligence Commission
The Australian Government is committed to leading the way in Antarctic environmental protection. We strive to continuously improve our environmental stewardship and minimise the environmental impacts of our operations. As such, and in accordance with our international obligations under the Antarctic Treaty system, the Australian Antarctic Division (AAD) is assessing the environmental impacts of the Australian Antarctic Program’s aviation operations on the Antarctic environment (areas south of 60°S).
The AAD has prepared a draft Initial Environmental Evaluation (IEE): Australian Antarctic Program Aviation Operations 2025-2030. This IEE considers the potential environmental impacts of all Australian flights in the Antarctic Treaty area in support of the Australian Antarctic Program, for the coming five years. This includes intracontinental and intercontinental airplane flights, helicopters, operation of the Wilkins ice runway, airdrops and some remotely-piloted aircraft activities. The AAD invites members of the public to submit comments on the draft IEE document. Comments should focus on potential environmental impacts of the proposed activities (south of 60°S) and/or suggest additional, specific ways to reduce the environmental impacts of the proposed activities. Please note that this environmental assessment process is unrelated to the recently released Approach to Market for the provision of Antarctic Aviation Services. The closing date for public comment is 5:00pm AEST on 13 June, 2025. Please submit comments and/or questions on this draft IEE to the AAD’s Antarctic and Environmental Regulation Section via email: eia@aad.gov.au Or via mail: Gillian Slocum Director, Antarctic and Environmental Regulation Section Policy and Strategy Branch Australian Antarctic Division GPO Box 3090, Canberra City ACT 2601 This content was last updated 15 hours ago on 23 May 2025.
Source: United Kingdom – Executive Government & Departments
Mass loss from ice sheets in Greenland and Antarctica has quadrupled since the 1990s. It’s now the main source of global mean sea-level rise from the cryosphere.
The stability of ice sheets is critical to predicting sea level rise. A new synthesis published in Communications Earth and Environment brings together multiple lines of evidence to show that +1.5C is too high, and that even the current increase (about 1.2C) – if sustained – is likely to generate several metres of sea-level rise over the coming centuries. This would cause extensive loss and damage to coastal populations. The authors argue that avoiding this requires a global average temperature cooler than present.
Journalists came to this online briefing to hear the authors present their work and answer their questions on the threats of polar ice melt.
Speakers included:
Prof Chris Stokes, Glaciologist, Durham University
Prof Jonathan Bamber, Director of the Bristol Glaciology Centre, University of Bristol
The 2015 Paris agreement committed countries to keeping the global temperature increase “well below 2°C”, which is widely interpreted as an average of 1.5°C over a 30-year period. The Paris agreement has not yet failed, but recent high temperatures show how close the Earth is to crossing this critical threshold.
Climate scientists have, using computer simulations, modelled pathways for halting climate change at internationally agreed limits. However, in recent years, many of the pathways that have been published involve exceeding 1.5°C for a few decades and removing enough greenhouse gas from the atmosphere to return Earth’s average temperature below the threshold again. Scientists call this “a temporary overshoot”.
If human activities were to raise the global average temperature 1.6°C above the pre-industrial average, for example, then CO₂ removal, using methods ranging from habitat restoration to mechanically capturing CO₂ from the air, would be required to return warming to below 1.5°C by 2100.
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Do we really understand the consequences of “temporarily” overshooting 1.5°C? And would it even be possible to lower temperatures again?
Faith that a temporary overshoot will be safe and practicable has justified a deliberate strategy of delaying emission cuts in the short term, some scientists warn. The dangers posed by remaining above the 1.5°C limit for a period of time have received little attention by researchers like me, who study climate change.
To learn more, the UK government commissioned me and a team of 36 other scientists to examine the possible impacts.
How nature will be affected
We examined a “delayed action” scenario, in which greenhouse gas emissions remain similar for the next 15 years due to continued fossil fuel burning but then fall rapidly over a period of 20 years.
We projected that this would cause the rise in Earth’s temperature to peak at 1.9°C in 2060, before falling to 1.5°C in 2100 as greenhouse gases are removed from the atmosphere. We compared this scenario with a baseline scenario in which the global temperature does not exceed 1.5°C of warming this century.
Our Earth system model suggested that Arctic temperatures would be up to 4°C higher in 2060 compared to the baseline scenario. Arctic Sea ice loss would be much higher. Even after the global average temperature was returned to 1.5°C above pre-industrial levels, in 2100, the Arctic would remain around 1.5°C warmer compared to the baseline scenario. This suggests there are long-term and potentially irreversible consequences for the climate in overshooting 1.5°C.
As global warming approaches 2°C, warm-water corals, Arctic permafrost, Barents Sea ice and mountain glaciers could reach tipping points at which substantial and irreversible changes occur. Some scientists have concluded that the west Antarctic ice sheet may have already started melting irreversibly.
Our modelling showed that the risk of catastrophic wildfires is substantially higher during a temporary overshoot that culminates in 1.9°C of warming, particularly in regions already vulnerable to wildfires. Fires in California in early 2025 are an example of what is possible when the global temperature is higher.
Our analysis showed that the risk of species going extinct at 2°C of warming is double that at 1.5°C. Insects are most at risk because they are less able to move between regions in response to the changing climate than larger mammals and birds.
The impacts on society
Only armed conflict is considered by experts to have a greater impact on society than extreme weather. Forecasting how extreme weather will be affected by climate change is challenging. Scientists expect more intense storms, floods and droughts, but not necessarily in places that already regularly suffer these extremes.
In some places, moderate floods may reduce in size while larger, more extreme events occur more often and cause more damage. We are confident that the sea level would rise faster in a temporary overshoot scenario, and further increase the risk of flooding. We also expect more extreme floods and droughts, and for them to cause more damage to water and sanitation systems.
Floods and droughts will affect food production too. We found that impact studies have probably underestimated the crop damage that increases in extreme weather and water scarcity in key production areas during a temporary overshoot would cause.
We know that heatwaves become more frequent and intense as temperatures increase. More scarce food and water would increase the health risks of heat exposure beyond 1.5°C. It is particularly difficult to estimate the overall impact of overshooting this temperature limit when several impacts reinforce each other in this way.
In fact, most alarming of all is how uncertain much of our knowledge is.
For example, we have little confidence in estimates of how climate change will affect the economy. Some academics use models to predict how crops and other economic assets will be affected by climate change; others infer what will happen by projecting real-word economic losses to date into future warming scenarios. For 3°C of warming, estimates of the annual impact on GDP using models range from -5% to +3% each year, but up to -55% using the latter approach.
We have not managed to reconcile the differences between these methods. The highest estimates account for changes in extreme weather due to climate change, which are particularly difficult to determine.
We carried out an economic analysis using estimates of climate damage from both models and observed climate-related losses. We found that temporarily overshooting 1.5°C would reduce global GDP compared with not overshooting it, even if economic damages were lower than we expect. The economic consequences for the global economy could be profound.
So, what can we say for certain? First, that temporarily overshooting 1.5°C would be more costly to society and to the natural world than not overshooting it. Second, our projections are relatively conservative. It is likely that impacts would be worse, and possibly much worse, than we estimate.
Fundamentally, every increment of global temperature rise will worsen impacts on us and the rest of the natural world. We should aim to minimise global warming as much as possible, rather than focus on a particular target.
Don’t have time to read about climate change as much as you’d like?
Paul Dodds has received funding from the UK government through the Climate Services for a Net Zero World (CS-N0W) programme. While the UK government set the research questions for the study, it was carried out independently by scientists from nine organisations. Dodds has also received funding for other research projects from a range of organisations, including UK Research and Innovation organisations (Engineering and Physical Sciences Research Council and the Natural Environment Research Council); the IEA Energy Technology Systems Analysis Program (ETSAP); and private organisations (National Grid; Fuels Industry UK; Johnson Matthey; Cadent). A team at UCL led by Paul Dodds jointly develops the UK TIMES energy system model in a partnership with the UK government. This model was not used in this study.
Senior environment editor Anna Turns with BBC radio producer Jo LoosemoreCC BY-NC-ND
After a long drive to Godrevy lighthouse near St Ives in Cornwall, the wind is blowing and the waves are crashing. I’m here with BBC radio producer Jo Loosemore, on a roadtrip to meet some of the marine scientists researching how ocean health is vital to our future.
As we squeeze between crevices in the cliffs to shelter from the elements at Godrevy beach, I interview Ed Gasson, a glaciologist at the University of Exeter. His story is full of surprises.
Jo Loosemore with Anna Turns on Godrevy beach. Ed Gasson, CC BY-NC-ND
This corner of north Cornwall is one I have visited many times, usually on bright, sunny days during weekend getaways or family holidays. I’ve gazed at the lighthouse, enjoyed spotting seals on the rocks beneath, and sat with both icecream and binoculars in hand on the benches by the coast path.
But I had never looked closely at these cliffs below, until now. And I could never have guessed that this coastline had any connections to the ice age, the Antarctic or sea-level rise.
In a collaboration between The Conversation and BBC South West, Secrets of the Sea is a new series that showcases local stories with global significance. World experts based across Devon and Cornwall are at the forefront of marine research into seaweeds and seagrass, seabed restoration and offshore shellfish farming.
Prepping to record inside the National Maritime Museum of Cornwall. Jo Loosemore, CC BY-NC-ND
From the rocky foreshore in Torquay to the mussel-covered pontoons of Plymouth harbour, I’ve been speaking to scientists about their work, their passions and the potential for our oceans to hold the key to climate resilience. Healthier seas mean our planet will be much better able to weather the stormy seas of the climate crisis.
Each of the six radio programmes and accompanying articles delves into a different aspect of our oceans. Through 19th-century archives, in tiny test tubes on a lab bench, or inside a walk-in fridge full of marine fungi, this series explores creative ways to study ocean health. So, join me on BBC Sounds and here at The Conversation to go beneath the waves with a sense of wonder – and optimism.
Listen to a mini-series of four short episodes on BBC Radio Devon from May 20-23 here. The full six-part series will air weekly from May 23 at 8.30pm on BBC Radio Devon and BBC Radio Cornwall.
Local science, global stories.
In collaboration with the BBC, Anna Turns travels around the West Country coastline to meet ocean experts making exciting discoveries beneath the waves.
This article is part of a series, Secrets of the Sea, exploring how marine scientists are developing climate solutions.
Source: United States Senator for Alaska Dan Sullivan
05.16.25
WASHINGTON—U.S. Senator Dan Sullivan (R-Alaska), a member of the Senate Environment & Public Works (EPW) Committee, secured a commitment this week from Adam Telle, nominated to be Assistant Secretary of the Army for Civil Works in charge of the Army Corps of Engineers, to prioritize the Port of Nome project, the nation’s first deep-draft Arctic port, in light of Alaska’s strategic importance constituting the entirety of America’s Arctic.
“The Port of Nome has bipartisan support,” said Sen. Sullivan. “We don’t have an Arctic port anywhere to push back on the Russian and Chinese aggression in my part of the [country]. That project, it’s really important. We’ve got to get it over the finish line. Can I get your commitment to work with me and the others in this committee on that project?”
“Senator Sullivan, one of the most strategic issues that confronts the United States of America today is our status as an Arctic…nation,” said Mr. Telle. “This is an area of the world that the Chinese Communist Party is very interested in. The Russians are very active. Your state is front and center to the United States of America’s being an Arctic nation. We must be. It seems to me that, if we’re going to be an Arctic nation, that Alaska ought to be one of the key launching points of that force projection and power projection and economic projection. I look forward to working with you to help make the case for the strategic nature of Alaska and the Port of Nome as it relates to the United States asserting itself as an Arctic nation.”
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In his questioning during the EPW hearing, Sen. Sullivan also highlighted President Donald Trump’s executive order, “Unleashing Alaska’s Extraordinary Resource Potential,” which directs the Corps to “review, revise or rescind any agency action that may in any way hinder, slow, or otherwise delay any critical project in the State of Alaska.” Mr. Telle reiterated his understanding of and support for carrying out the President’s Alaska order in relation to critical projects, including the Port of Nome.
Below is a transcript of Sen. Sullivan’s exchange with Mr. Telle on the Port of Nome and the Alaska EO.
SEN. SULLIVAN: I appreciated our meetings, Mr. Telle and Mr. McMaster. It’s hard to build anything in Alaska. Right? You want to build a road, a sidewalk, you usually get 12 radical far-left environmental groups that sue to stop it. We have the King Cove Road. We’ve only been trying to get that done for 40 years. A nine-mile, single-lane gravel road that every Democrat in the country—including, God rest his soul, Jimmy Carter, writes op-eds [saying] you can’t build a road in Alaska. Then it went so bad, we had the Biden administration’s Last Frontier Lock Up. My great state suffered through 70 executive orders and executive actions from the Biden administration singularly focused on Alaska. I like ripping this up because that’s not the issue anymore. We now have President Trump who issued his day-one executive order called, “Unleashing Alaska’s Extraordinary Resource Potential.” Mr. Telle, as you and I discussed, there’s a lot of great provisions in here. This is all about getting things done in Alaska, not crushing us as the radical left wants to do. There’s a really good provision about the Corps of Engineers. I’m going to read it to you: “The assistant Secretary of the Army for Civil Works”—that’s you—”shall immediately review, revise or rescind any agency action that may in any way hinder, slow, or otherwise delay any critical project in the state of Alaska.” That’s from the President. Will you commit to abide by that very expansive provision to get things done in my great state after four years of being crushed by the previous administration?
MR. TELLE: Senator Sullivan, absolutely. When I visited your office, I tattooed the executive order that the President issued on Alaska on my heart.
SULLIVAN: By the way, that’s a great answer.
TELLE: I will go ahead and read the second paragraph to you from memory, which essentially says that I shall, if confirmed, coordinate as closely with the Governor of Alaska as a human could possibly coordinate.
SULLIVAN: Good. And the Senator from Alaska.
TELLE: Of course.
…..
SULLIVAN: The Port of Nome has bipartisan support. We don’t have an Arctic port anywhere to push back on the Russian and Chinese aggression in my part of the [country]. That project, it’s really important. We’ve got to get it over the finish line. Can I get your commitment to work with me and the others in this committee on that project? That’s an interesting project. I mentioned, you had your SASC hearing yesterday. That’s EPW, and that’s very much DoD, to be able to have Navy ships, icebreakers, be able to pull up to the port of Nome. We don’t have a port in the Arctic right now that can handle Navy ships and icebreakers.
TELLE: Senator Sullivan, one of the most strategic issues that confronts the United States of America today is our status as an Arctic and Antarctic nation. This is an area of the world that the Chinese Communist Party is very interested in. The Russians are very active. Your state is front and center to the United States of America’s being an Arctic nation. We must be. It seems to me that, if we’re going to be an Arctic nation, that Alaska ought to be one of the key launching points of that force projection and power projection and economic projection. I look forward to working with you to help make the case for the strategic nature of Alaska and the Port of Nome as it relates to the United States asserting itself as an Arctic nation.
Below is a timeline on the Port of Nome expansion project:
Water resource projects developed by the Corps undergo a multi-stage process. Standard Corps project delivery consists of the Corps leading the study, design, and construction of authorized projects. However, each stage of that process must qualify for an existing authorization or receive a separate authorization from Congress, as well as receive congressional appropriation at each stage to proceed. Congress authorizes the Corps’ actions through periodic Water Resource Development Acts in the Senate EPW Committee and the House Committee on Transportation and Infrastructure.
In 2012, the Corps launched the Alaska Deep Draft Arctic Port System Study to evaluate potential locations on the northern and western coasts of Alaska, and to determine the feasibility of constructing navigation improvements as part of a larger system of port facilities in the Arctic and sub-Arctic region. Following the selection of Nome as the location for an Arctic port, the Corps began a feasibility study, assessing the costs of the port versus the benefits. The Corps paused the feasibility study following the departure of Shell Oil Company from the Arctic, which significantly tipped the cost-benefit ratio against the port project.
In the 2016 Water Infrastructure Improvements for the Nation (WIIN) Act, Sen. Sullivan and the late Representative Don Young (R-Alaska) included two provisions to justify a potential Arctic port based on its value to surrounding communities and its importance to national security.
In 2017, following enactment of the WIIN Act, senior Corps leaders committed to Sullivan and Young to utilize the new authority to restart the feasibility study for the port.
On February 2, 2018, the City of Nome and the Corps initiated a cost-sharing agreement.
On October 23, 2018, President Trump signed America’s Water Infrastructure Act (AWIA), which included Sullivan-Young language to expedite completion of a Corps feasibility study for the Nome port.
On May 29, 2020, the Corps announced the completion of the chief’s report for the Port of Nome Modification Feasibility Study, making the project eligible for congressional authorization and funding.
In December 2020, President Trump signed the Water Resources Development Act (WRDA) of 2020, which included language, championed by Sullivan and Young, authorizing $379 million for the federal share of the Nome Deep Draft Port Project.
On November 15, 2021, the Infrastructure Investment and Jobs Act (IIJA) was signed into law. The bill provided $250 million over five years for the construction of remote and subsistence harbor projects. These projects are in locations that are not connected to a road system, and for ports are vital to the long-term viability of the community.
On January 19, 2022, the Corps announced that the entire $250 million from the IIJA for remote and subsistence harbor projects will be directed to the Port of Nome.
On July 28, 2022, the Senate passed the Water Resources Development Act (WRDA) of 2022. The legislation included key victories for Alaska infrastructure, including increasing the federal cost-share for the Nome Deep Draft Port Project.
On December 15, 2022, the Senate passed WRDA 2022 as part of the FY 2023 National Defense Authorization Act.
On October 31, 2023, Senators Sullivan and Lisa Murkowski (R-Alaska) announced an$11.2 million grant for the construction of water and wastewater, fuel, power, and communications infrastructure to expand and deepen the Port of Nome. The grant was made possible by the IIJA.
On January 25, 2024, the Corps announced a Project Partnership Agreement (PPA) for the Port of Nome expansion project, which includes the construction of a new deep-water basin. The PPA, which legally binds the government and the State of Alaska to execute the project, was marked by a signing ceremony held in Nome.
On February 12, 2025, several Arctic policy experts testified at a Senate Commerce Science & Transportation Committee hearing in support of increasing infrastructure investments in Alaska, including the Port of Nome expansion.
Source: The Conversation – UK – By Edward Armston-Sheret, IHR Fellow, School of Advanced Study, University of London
By July 1858, the English explorer John Hanning Speke had been in Africa for 18 months. His eyes and body were weakened by fever, and he still hadn’t found what he set out to discover – the source of the River Nile.
Squinting through the heat on July 30, however, he spotted a body of water, about four miles away, surrounded by grass and jungle. At first, he could see only a small creek, flanked by lush fertile land used for growing crops and grazing by local people. But he pressed onward, dragging a reluctant donkey through jungle and over dried-up streams.
It wasn’t until August 3 that he could comprehend the full size of the lake. After winding up a gradual hill near Mwanza, located in the north of modern-day Tanzania, Speke was finally able to see a “vast expanse” of “pale-blue” water. He gazed on the lake’s islands and could see the outline of hills in the distance. Speke was arrested by the “peaceful beauty” of the scene. At the same time he was excited – he was convinced that this lake was what he’d been looking for. He was right. The Nile is the lake’s only outlet, and the huge body of water – now known as Lake Victoria – is the world’s second-largest freshwater lake.
Lack of time and money prevented Speke from travelling any further, so he came to understand the lake’s size by speaking to local people. As he didn’t speak any African languages, such conversations had to be translated multiple times. Thankfully, he had Sidi Mubarak Bombay to help him, a key figure in the expedition, who spoke both Hindi (which Speke could understand) and Swahili.
Despite another multi-year expedition from Zanzibar travelling inland to the area, in his own lifetime, Speke struggled to prove his claims. That’s because he only saw part of the lake and was unable to follow the river that flowed out of it the whole way to the coast. He died in 1864 from self-inflicted wounds sustained during a strange shooting incident, shortly before speaking at a debate about the source of the Nile.
But at least he is remembered by history. Bombay and the hundreds of African men and women who made his journey possible have since been largely forgotten. Such people did most of the hard work of exploration, building camps, navigating, cooking food and caring for Speke when he was sick.
The Insights section is committed to high-quality longform journalism. Our editors work with academics from many different backgrounds who are tackling a wide range of societal and scientific challenges.
They are not the only ones. As a researcher specialising in the history of geography, I’ve spent almost eight years examining Victorian and Edwardian exploration and learned about the lives and experiences of African and Asian explorers, including Bombay. They included men and women who were formerly enslaved and were either forced into the work, or paid a pittance. Some of the women were forced into sexual relationships and marriages. Many were killed or badly injured in floggings at the hands of their brutal “masters” keen to administer punishment for perceived transgressions.
Their names should be in the pantheon of exploration, but all too often they are either ignored or misrepresented within the historical record. These are just some of their stories.
The illness and suffering Speke endured left a lasting mark on his body. Though he claimed to have fully recovered, his fellow British explorer on the expedition, the eccentric Richard F. Burton, argued in his book The Lake Regions of Central Africa (1860) that Speke had sustained brain damage from sun stroke. In reality, he might have been showing the after effects of malaria and hearing loss. At one stage, a beetle had crawled into his ear, leaving him deaf for a month.
Even so, Speke led a further expedition to Africa to try to prove once and for all that he had “discovered” the source of the Nile.
He also published two books on his journeys. In the front of one, he used an etching of himself (based on a painting) standing before Lake Victoria. A copy of this painting still hangs in the headquarters of the Royal Geographical Society in South Kensington, London.
The image depicts Speke as a heroic and masculine figure. What we don’t see are the men and women who did the hard work of bringing Speke to the lake in the first place.
Sidi Mubarak Bombay was one of the most important figures within Speke’s expeditions. From Speke’s book about the expedition, which included a short biography of Bombay, we know he was born in 1820 near the modern border of Tanzania and Mozambique. His mother died when he was young, yet he remembered life in his village as one of “happy contentment” until, at the age of 12, when he was captured and enslaved by Swahili-speaking merchants.
He was then marched to the coast in chains before being sold at a slave market in Zanzibar. The man who bought him then transported him to India. Eventually, his owner died, and Bombay was freed. He returned to East Africa and enlisted in the Sultan of Zanzibar’s army. There, he met Speke and joined the East African Expedition in February 1857 and was paid five silver dollars a month.
The appointment changed Bombay’s life. The expedition was led by Burton, who had become famous for travelling to Mecca and Medina disguised as a Muslim pilgrim. Bombay became a key member of the expeditionary party.
Not only did he translate both Burton and Speke’s orders, but he also negotiated with local leaders for food, shelter and safe passage through their territory and cared for the explorers when they were sick. Bombay developed an active interest in the expedition’s work. In his book, Speke wrote that “by long practice, he has become a great geographer”.
When Speke returned to Zanzibar in 1860 for his next expedition, Bombay was one of the first men he recruited. He stayed with the expedition on its multi-year journey from Zanzibar to Cairo. Bombay went on to work for other European explorers, including Henry Morton Stanley who searched for the “lost” explorer David Livingstone, and Verney Lovett Cameron, who sought to investigate the lakes and rivers of Africa.
With Lovett Cameron, Bombay crossed equatorial Africa from coast to coast, completing much of the journey on foot. Even Victorian geographers recognised Bombay’s contribution, and he eventually received an award and pension from the Royal Geographical Society.
Anonymous labour and explorers’ violence
Bombay was a remarkable man. But Speke’s explorations also depended on many people we know far less about.
Both of Speke’s journeys to Lake Victoria were huge undertakings, involving hundreds of people. Much of the hard work was carried out by Nyamwezi porters from the central region of modern-day Tanzania. These men often worked on the pre-existing trade routes that connected the lake regions to the east African coast.
They carried the explorers’ supplies, basic equipment, trade goods and food. Explorers’ accounts often describe these people in racially offensive ways. Even so, their private letters also show their reliance on them.
An image from Speke’s book Journal of the Discovery of the Source of the Nile, illustrated by James Grant, showing ‘Speke’s faithfuls’. Wiki Commons
On his journey to Lake Victoria, Speke struggled to recruit enough porters and complained: “I cannot move independently of the natives, and now the natives are not to be got for love or money [sic]. This alone has detained me here four whole months doing nothing.”
Alongside the porters, Speke also employed Swahili-speaking men from Zanzibar. These men often had their origins in East Africa and had often been enslaved in childhood. In his published account, Speke portrayed them in terms that drew on colonial tropes about childlike Africans.
In one letter to the British consul in Zanzibar, sent on December 12 1860, he was more positive, saying that such men do “all the work and do it as an enlightened and disciplined people”. These contrasting assessments perhaps reflect Speke’s varying mood. However, the different way he wrote in public might also be part of an effort to emphasise the difficulty of the journey and his leadership qualities.
Yet explorers sometimes struggled to maintain control over the parties they led. One problem was the fact that, once away from the coast and the power of the Zanazibari state, expedition members could easily slip away. Understandably, porters were more likely to leave an expedition when conditions became bad and food scarce.
Violent punishments were also a common feature of expeditions in this region. The explorers did not invent them – such punishments were also used by Arabic or Swahili-speaking merchants travelling in the area – but they showed little hesitation in using them. In his book on their 1856-59 expedition, Burton boasted that the expedition’s porters referred to him as “the wicked white man”.
Porters referred to Richard F. Burton as ‘the wicked white man’. Hulton Archive
On Speke’s second expedition to Lake Victoria, his Scottish companion Grant described how one man “roared for mercy” when he was flogged 150 times after stealing cloth to buy food. In a letter to the Royal Geographical Society on February 17 1861, Speke wrote that this was the maximum number of lashes he would give out “for fear of mortal consequences”.
Later expeditions, such as those led by the Welsh-American explorer Henry Morton Stanley were even more violent.
During the Emin Pasha Relief Expedition (1887-89), Stanley decided to divide the party, leaving a “rear column” behind. Conditions in this group soon deteriorated, due to food shortages and disease. The column’s leader, the explorer Major Edmund Bartlott, carried out a string of violent punishments. One Sudanese porter was executed, while a Zanzibari man was flogged so many times that he died of the injuries.
Bartlott was only stopped from carrying out further acts of violence when he was killed by an African man fearful that he was about to attack his wife.
Women and girls on African expeditions
When Speke’s final expedition arrived in Cairo in 1863, having travelled from Zanzibar, the party also contained four young women who were photographed there. Their presence shows that African women often formed part of explorers’ expeditionary parties.
Sometimes the women joined voluntarily, often as the partners of porters. Others were enslaved women and girls purchased by other expedition members. One of the girls photographed in Cairo was named Kahala. Along with an older girl named Meri, she had been “given” to Speke by the queen mother of the African Kingdom of Buganda during Speke’s extended stay in the country.
Women and girls in Speke’s party in Cairo, from his Journal of the Discovery of the Source of the Nile, 1863. CC BY-SA
Speke’s relationship with Meri took a remarkable turn. In an unpublished draft of his book, now held at the National Library of Scotland, he described her as “18 years or so” and “in the prime of youth and beauty”.
The manuscript also implies that their relationship had a sexual dimension, although it’s unclear if this was consensual. On April 12 1862, Speke claimed that he spent the night “taming the silent shrew” – alluding to a play by William Shakespeare in which a husband torments his strong-willed wife into submission. Even in his highly edited published account, Speke described himself as a “henpecked husband”.
His account then described the breakdown of their relationship in early May 1862. The breakup, Speke wrote in the unpublished draft of his book, “nearly drove my judgement from me” and left him with a “nearly broken … heart.” After this, Meri apparently showed “neither love, nor attachment for me”, suggesting she had shown some before this.
Speke eventually “gave” the younger girl, Kahala, to Bomaby because “she preferred playing with dirty little children to behaving like a young lady”. At first, Kahala was unhappy about this transfer and tried to run away. But she was soon found and returned to the party. She then stayed with the expedition to Cairo and travelled with Bombay when he returned to Zanzibar.
It was not unusual for women to try to join expeditionary parties. Explorers often had concerns about the presence of unmarried women within their ranks. For instance, in his book To The Central African Lakes and Back (1881) Joseph Thomson, who led an expedition to the Lake Regions of central Africa between 1878 and 1880, reported finding a woman in the expedition’s camp who was trying to reach the coast.
On the advice of the expedition’s experienced African headman James Chuma (who, like Bombay, became involved in multiple expeditions), Thomson forced the woman to marry one of the expedition’s porters. The woman does not seem to have been happy with this arrangement. While she stayed with the expedition for a while, she slipped away when they neared the coast.
We only know the names of a small fraction of the women involved in such expeditions. Grant wrote a book on their journey that gives further details about women in the party.
In it he noted that several of the porters travelled alongside female partners who were “generally carrying a child each on their backs, a small stool … on their heads, and inveterately smoking during the march. They would prepare some savoury dish of herbs for their men on getting into camp, where they lived in bell-shaped erections made with boughs of trees”.
Such passages give us only a tantalising glimpse of these women. We’re left without a detailed knowledge of their names or lives. But we do know that they contributed to these expeditions in important ways.
Isabella Bird and Ito
More well known are the stories of the growing number of British women who became explorers in the Victorian era. Foremost among them was Isabella Bird.
Isabella Bird wearing Manchurian clothing from a journey through China. New York Public Library
Born in 1831 to an upper-middle class family and less than 5ft tall, Bird did not begin her career as an explorer until middle age. She was also disabled. At the age of 18, Bird had a “fibrous tumour” removed from the base of her spine and afterwards lived with chronic back pain. She travelled, often on horseback, to every continent of the world except Antarctica. Bird was also one of the first women admitted to the then all-male Royal Geographical Society in 1892.
Bird’s gender and disability shaped how she travelled. Unable to walk for long distances, she often rode cross-saddle, rather than the more traditionally feminine side-saddle, which she found painful. In some places, she faced specific hostility because she was a woman.
Yet, in other ways, Bird’s journeys had shared similarities with those made by men. Like them, she often depended on local people during her journeys. When she travelled through Japan in 1878, she relied on the services of an 18-year-old Japanese man named Itō Tsurukichi. He played a vital role in her journey across the country, arranging much of her travel, translating conversation with local people and explaining what she was looking at.
In Bird’s published accounts, her descriptions of Tsurukichi are often laced with racial prejudice. She often referred to him as a “boy” and was disparaging about his physical appearance. Her perspective on him did soften a little, however, as their journey continued. She was impressed by his qualities as a translator and the fact that he was continually trying to improve his linguistic skills.
Tsurukichi’s essential role was also illustrated when Bird attended a Japanese wedding to which he was not invited. She complained that it was like being “deprived of the use of one of her senses”.
Bird’s account also raises questions of who the leader of their journey through Japan was. “I am trying to manage him, because I saw that he meant to manage me,” she wrote in her book Unbeaten Tracks in Japan (1880). Bird also reported an incident where a Japanese boy thought “that Ito was a monkey-player, ie. the keeper of a monkey theatre, I a big ape, and the poles of my bed the scaffolding of the stage!”
Bird viewed the child’s misunderstanding as amusing, but it does suggest that some outsiders thought Tsurukichi was leading the party. He was clearly a skilled guide and translator, and he went on to become one of the foremost tour guides in Japan, taking numerous western travellers around the country.
Like Burton and Speke, Bird often depended on guides on her journeys. Sometimes, she led much larger groups. In such situations, others cooked her food, packed her tent, and translated conversations with local people.
When she travelled in China in the 1890s, Bird was carried across much of the country in an open chair on the shoulders of three separate groups of chair-bearers. She often didn’t record the names of the men who did such work and only described their labour in quite general terms – though she did photograph some of them and her chair.
However little men like Bombay and Tsurukichi are remembered, it is at least possible to recover their names.
Scott and Antarctica – exploration in an unpopulated land
In the early 20th century, the exploration of Antarctica was a thoroughly masculine affair. Some women did apply to join Antarctic expeditions, such as those led by Ernest Shackleton, but their applications were turned down. Antarctic expeditions were also less ethnically diverse than those in the Arctic. In the north, explorers often relied on the skills and labour of Indigenous people. There were also Black explorers, including Matthew Henson, an African-American man who claimed to be one of the first men to stand on the North Pole.
Antarctica presented a unique challenge: it is unpopulated, and when British explorers made their first attempts to explore its interior in the early 20th century, they had no idea what to expect.
In contrast to diverse expeditions elsewhere in the world, Antarctic expeditions were comparatively homogenous undertakings. British expeditions, led by Robert Falcon Scott and Shackleton, mostly employed white men from within the British empire. Sledging journeys in Antarctica were quite egalitarian compared with expeditions in Africa and Asia. Sledging often required upper and middle-class officers and scientists to work collaboratively with working class sailors, who often pulled sledges forward by sheer force of muscle.
Shackleton, Scott and Edward Wilson before their march south during the Discovery expedition in 1902. Sledges visible in the background. National Library of New Zealand
On the British National Antarctic Expedition, Scott completed a long sledge journey to the Polar Plateau with stoker William Lashly and petty officer Edgar Evans. The men cooked, ate, slept and laboured together. Scott, an officer, found the experience revealing, learning much about the working-class men’s experiences in the Royal Navy. Antarctic explorers were more willing to acknowledge the manual labour that made their expeditions possible than Burton, Speke or Bird, partly because this work was done by white men.
Some working-class sailors – such as Edgar Evans, Tom Crean, or William Lashly – did achieve a certain degree of celebrity. But others figures are overlooked. On Scott’s expedition he employed two men from within the Russian empire to help care for and train the expedition’s ponies and huskies: Dmitrii Girev and Anton Omelchenko. Apsley Cherry-Garrard, the expedition’s assistant zoologist, noted that they “were brought originally to look after the ponies and dogs on their way from Siberia to New Zealand. But they proved such good fellows and so useful that we were very glad to take them on the strength of the landing party”.
Girev, from the far east of Russia specialised in looking after the expedition’s Siberian huskies, while Omelchenko, born in Ukraine, specialised in caring for the ponies who would haul Scott’s supplies towards the South Pole. They therefore played a vital role in the expedition. In their accounts, Scott and Cherry-Garrard referred to these adult men using the infantilising term “boys” – thereby stripping them of their status as full and equal members of the expeditionary party.
Even among the British expedition members, there were still significant disparities in how labour on polar expeditions was rewarded or reported. Working-class men, mostly sailors drawn from the Royal Navy, did much of the hard, unglamorous work. They were also paid much less than officers and scientists.
On Scott’s two Antarctic expeditions, much of the day-to-day work at base camp – such as cooking, cleaning, and collecting ice to melt into drinking water – was carried out by working-class sailors.
On his final expedition, the explorers spent the winter in a small hut on Ross Island. One man, Thomas Clissold, worked as the expedition’s cook. Frederick Hooper, a steward who joined the shore party, swept the floor in the morning, set the table, washed crockery and generally tidied things. “I think it is a good thing that in these matters the officers need not wait on themselves,” Scott commented in his diary. “It gives long unbroken days of scientific work and must, therefore, be an economy of brain in the long run.”
He had adopted a similar approach on his first expedition, which left some sailors frustrated. “We don’t have any idea of what has been done in the scientific work, as they don’t give us any information,” James Duncan, a Scottish shipwright on the British National Antarctic Expedition (1901-1904) complained in his diary. “It’s rather hard on the lower deck hands.”
Even memorials to Antarctic explorers perpetuate many of the heroic myths of exploration. If you walk around London today, you might stumble on the statue of Scott in Waterloo Place or one of Shackleton outside the headquarters of the Royal Geographical Society in South Kensington. Such statues embody much of what we often get wrong about exploration, depicting explorers as solitary. Expeditions were collective projects, and many of the people involved haven’t had their contributions fully recognised.
In many parts of the world, expeditions were large, diverse undertakings. Yet many of the people who did most of the work have been forgotten. My research seeks to put them in the spotlight and recover something of their lives and experiences.
Expeditions are extreme situations in which human bodies are pushed to (and sometimes beyond) their limits. Because of this, they vividly illustrate the various ways humans depend on each other – for care, food, shelter, transport and companionship. Today, human societies are more complex and interdependent than ever. Though often in less extreme or dramatic ways, like explorers, we all depend on other people for survival.
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Edward Armston-Sheret has received funding from the Institute of Historical Research (via the Alan Pearsall Fellowship in Naval and Maritime History), the Royal Historical Society, The Royal Geographical Society, and the Arts and Humanities Research Council (via the Techne Doctoral Training Partnership).
The emergence of four-legged animals known as tetrapods was a key step in the evolution of many species today – including humans.
Our new discovery, published today in Nature, details ancient fossil footprints found in Australia that upend the early evolution timeline of all tetrapods. It also suggests major parts of the story could have played out in the southern supercontinent of Gondwana.
This fossil trackway whispers that we have been looking for the origin of modern tetrapods in the wrong time, and perhaps the wrong place.
The first feet on land
Tetrapods originated a long time ago in the Devonian period, when strange lobe-finned fishes began to haul themselves out of the water, probably around 390 million years ago.
This ancestral stock later split into two main evolutionary lines. One led to modern amphibians, such as frogs and salamanders. The other led to amniotes, whose eggs contain amniotic membranes protecting the developing foetus.
Today, amniotes include all reptiles, birds and mammals. They are by far the most successful tetrapod group, numbering more than 27,000 species of reptiles, birds and mammals.
They have occupied every environment on land, have conquered the air, and many returned to the water in spectacularly successful fashion. But the fossil record shows the earliest members of this amniote group were small and looked rather like lizards. How did they emerge?
The oldest known tetrapods have always been thought to be primitive fish-like forms like Acanthostega, barely capable of moving on land.
Acanthostega, an early tetrapod that lived about 365 million years ago, was a member of the ancestral stock that gave rise to amphibians and amniotes. The authors
Most scientists agree amphibians and amniotes separated at the start of the Carboniferous period, about 355 million years ago. Later in the period, the amniote lineage split further into the ancestors of mammals and reptiles-plus-birds.
Now, this tidy picture falls apart.
A curious trackway
Key to our discovery is a 35 centimetre wide sandstone slab from Taungurung country, near Mansfield in eastern Victoria.
The slab is covered with the footprints of clawed feet that can only belong to early amniotes, most probably reptiles. It pushes back the origin of the amniotes by at least 35 million years.
Mansfield slab, dated between 359-350 million years old, showing positions of early reptile tracks. The authors
Despite huge variations in size and shape, all amniotes have certain features in common. For one, if we have limbs with fingers and toes, these are almost always tipped with claws – or nails, in the case of humans.
In other tetrapod groups, real claws don’t occur. Even claw-like, hardened toe tips seen in some amphibians are extremely rare.
Claws usually leave obvious marks in footprints, providing a clue to whether a fossil footprint was made by an amniote.
Close up showing the oldest known tracks with hooked claws from Mansfield, Victoria. Left, photo; right, optical scan. The authors
The oldest clawed tracks
The previous oldest fossil record of reptiles is based on footprints and bones from North America and Europe around 318 million years ago.
The oldest record of reptile-like tracks in Europe is from Silesia in Poland, a new discovery also revealed in our paper. They are around 328 million years old.
However, the Australian slab is much older than that, dated to between 359 and 350 million years old. It comes from the earliest part of the Carboniferous rock outcropping along the Broken River (Berrepit in the Taungurung language of the local First Nations people).
This area has long been known for yielding many kinds of spectacular fossil fishes that lived in lakes and large rivers. Now, for the first time, we catch a glimpse of life on the riverbank.
Fossil hunters search the Carboniferous red sandstone in the Mansfield area of Victoria. Such outcrops recently yielded the trackways of the world’s oldest reptile. John Long
Two trackways of fossil footprints cross the slab’s upper surface, one of them overstepping an isolated footprint facing the opposite direction. The surface is covered with dimples made by raindrops, recording a brief shower just before the footprints were made. This proves the creatures were moving about on dry land.
All the footprints show claw marks, some in the form of long scratches where the foot has been dragged along.
The shape of the feet matches that of known early reptile tracks, so we are confident the footprints belong to an amniote. Our short animation below gives a reconstruction of the ancient environment around Mansfield 355 million years ago, and shows how the tracks were made.
A short animation showing the creature making the tracks and its scientific significance. By Flinders University and Monkeystack Productions.
Rewriting the timeline
This find has a massive impact on the origin timeline of all tetrapods.
If amniotes had already evolved by the earliest Carboniferous, as our fossil shows, the last common ancestor of amniotes and amphibians has to lie much further back in time, in the Devonian period.
We can estimate the timing of the split by comparing the relative lengths of different branches in DNA-based family trees of living tetrapods. It suggests the split took place in the late Devonian, maybe as far back as 380 million years ago.
This implies the late Devonian world was populated not just by primitive fish-like tetrapods, and intermediate “fishapods” like the famous Tiktaalik, but also by advanced forms including close relatives of the living lineages. So why haven’t we found their bones?
The location of our slab provides a clue.
Big evolutionary questions
All other records of Carboniferous amniotes have come from the northern hemisphere ancient landmass called Euramerica that incorporated present-day North America and Europe. Euramerica also produced the great majority of Devonian tetrapod fossils.
The new Australian fossils come from Gondwana, a gigantic southern continent that also contained Africa, South America, Antarctica and India.
In all of this vast landmass, which stretched from the southern tropics down across the South Pole, our little slab is currently the only tetrapod fossil from the earliest part of the Carboniferous.
The Devonian record is scarcely much better. The Gondwana fossil record of early tetrapods is shockingly incomplete, with enormous gaps that could conceal – well, just about anything.
This find now raises a big evolutionary question. Did the first modern tetrapods, our own distant ancestors, emerge in the temperate Devonian landscapes of southern Gondwana, long before they spread to the sun-baked semi-deserts and steaming swamps of equatorial Euramerica?
It’s quite possible. Only more fieldwork, bringing to light new discoveries of Devonian and Carboniferous fossils from the old Gondwana continents, might one day answer that question.
We acknowledge the Taungurung people of Mansfield area where this scientific work has taken place.
John Long receives funding from the Australian Research Council.
Grzegorz Niedzwiedzki receives funding from the Swedish Research Council and the European Research Council.
Per Ahlberg receives funding from the European Research Council and the Knut & Alice Wallenberg Foundation.
Alongside energy, the Director General and Foreign Minister Sommerfeld also discussed how IAEA initiatives to promote the benefits of nuclear science are supporting Ecuador’s progress in many key development areas.
High on the agenda was cancer care, where IAEA flagship initiative Rays of Hope is increasing access to radiotherapy in the country. During his trip, Mr Grossi visited Carlos Andrade Marin Hospital where he was pleased to see “how IAEA efforts and local investment in cancer care — including access to radiotherapy — are making a life-changing difference.”
Nuclear science is also a powerful tool to boost food security and strengthen food export potential, and the IAEA’s Atoms4Food is helping Ecuador and other countries battle invasive insect pests like Mediterranean Fruit Fly, make banana crops more resilient to disease and map water resources to ensure a sustainable supply.
NUTEC Plastics, the IAEA initiative to use nuclear science to monitor and reduce marine plastic pollution, is also of relevance to the coastal country. During his trip, the Director General exchanged on the importance of tackling plastic pollution in valuable ecosystems, such as Antarctica where he recently launched microplastics research, and the Galapagos Islands of Ecuador where the IAEA has helped establish one of the world’s leading laboratories in microplastics. He also met with a range of local partners already working with the IAEA on the archipelago to preserve biodiversity and work for a healthier ocean.
The emergence of four-legged animals known as tetrapods was a key step in the evolution of many species today – including humans.
Our new discovery, published today in Nature, details ancient fossil footprints found in Australia that upend the early evolution timeline of all tetrapods. It also suggests major parts of the story could have played out in the southern supercontinent of Gondwana.
This fossil trackway whispers that we have been looking for the origin of modern tetrapods in the wrong time, and perhaps the wrong place.
The first feet on land
Tetrapods originated a long time ago in the Devonian period, when strange lobe-finned fishes began to haul themselves out of the water, probably around 390 million years ago.
This ancestral stock later split into two main evolutionary lines. One led to modern amphibians, such as frogs and salamanders. The other led to amniotes, whose eggs contain amniotic membranes protecting the developing foetus.
Today, amniotes include all reptiles, birds and mammals. They are by far the most successful tetrapod group, numbering more than 27,000 species of reptiles, birds and mammals.
They have occupied every environment on land, have conquered the air, and many returned to the water in spectacularly successful fashion. But the fossil record shows the earliest members of this amniote group were small and looked rather like lizards. How did they emerge?
The oldest known tetrapods have always been thought to be primitive fish-like forms like Acanthostega, barely capable of moving on land.
Acanthostega, an early tetrapod that lived about 365 million years ago, was a member of the ancestral stock that gave rise to amphibians and amniotes. The authors
Most scientists agree amphibians and amniotes separated at the start of the Carboniferous period, about 355 million years ago. Later in the period, the amniote lineage split further into the ancestors of mammals and reptiles-plus-birds.
Now, this tidy picture falls apart.
A curious trackway
Key to our discovery is a 35 centimetre wide sandstone slab from Taungurung country, near Mansfield in eastern Victoria.
The slab is covered with the footprints of clawed feet that can only belong to early amniotes, most probably reptiles. It pushes back the origin of the amniotes by at least 35 million years.
Mansfield slab, dated between 359-350 million years old, showing positions of early reptile tracks. The authors
Despite huge variations in size and shape, all amniotes have certain features in common. For one, if we have limbs with fingers and toes, these are almost always tipped with claws – or nails, in the case of humans.
In other tetrapod groups, real claws don’t occur. Even claw-like, hardened toe tips seen in some amphibians are extremely rare.
Claws usually leave obvious marks in footprints, providing a clue to whether a fossil footprint was made by an amniote.
Close up showing the oldest known tracks with hooked claws from Mansfield, Victoria. Left, photo; right, optical scan. The authors
The oldest clawed tracks
The previous oldest fossil record of reptiles is based on footprints and bones from North America and Europe around 318 million years ago.
The oldest record of reptile-like tracks in Europe is from Silesia in Poland, a new discovery also revealed in our paper. They are around 328 million years old.
However, the Australian slab is much older than that, dated to between 359 and 350 million years old. It comes from the earliest part of the Carboniferous rock outcropping along the Broken River (Berrepit in the Taungurung language of the local First Nations people).
This area has long been known for yielding many kinds of spectacular fossil fishes that lived in lakes and large rivers. Now, for the first time, we catch a glimpse of life on the riverbank.
Fossil hunters search the Carboniferous red sandstone in the Mansfield area of Victoria. Such outcrops recently yielded the trackways of the world’s oldest reptile. John Long
Two trackways of fossil footprints cross the slab’s upper surface, one of them overstepping an isolated footprint facing the opposite direction. The surface is covered with dimples made by raindrops, recording a brief shower just before the footprints were made. This proves the creatures were moving about on dry land.
All the footprints show claw marks, some in the form of long scratches where the foot has been dragged along.
The shape of the feet matches that of known early reptile tracks, so we are confident the footprints belong to an amniote. Our short animation below gives a reconstruction of the ancient environment around Mansfield 355 million years ago, and shows how the tracks were made.
A short animation showing the creature making the tracks and its scientific significance. By Flinders University and Monkeystack Productions.
Rewriting the timeline
This find has a massive impact on the origin timeline of all tetrapods.
If amniotes had already evolved by the earliest Carboniferous, as our fossil shows, the last common ancestor of amniotes and amphibians has to lie much further back in time, in the Devonian period.
We can estimate the timing of the split by comparing the relative lengths of different branches in DNA-based family trees of living tetrapods. It suggests the split took place in the late Devonian, maybe as far back as 380 million years ago.
This implies the late Devonian world was populated not just by primitive fish-like tetrapods, and intermediate “fishapods” like the famous Tiktaalik, but also by advanced forms including close relatives of the living lineages. So why haven’t we found their bones?
The location of our slab provides a clue.
Big evolutionary questions
All other records of Carboniferous amniotes have come from the northern hemisphere ancient landmass called Euramerica that incorporated present-day North America and Europe. Euramerica also produced the great majority of Devonian tetrapod fossils.
The new Australian fossils come from Gondwana, a gigantic southern continent that also contained Africa, South America, Antarctica and India.
In all of this vast landmass, which stretched from the southern tropics down across the South Pole, our little slab is currently the only tetrapod fossil from the earliest part of the Carboniferous.
The Devonian record is scarcely much better. The Gondwana fossil record of early tetrapods is shockingly incomplete, with enormous gaps that could conceal – well, just about anything.
This find now raises a big evolutionary question. Did the first modern tetrapods, our own distant ancestors, emerge in the temperate Devonian landscapes of southern Gondwana, long before they spread to the sun-baked semi-deserts and steaming swamps of equatorial Euramerica?
It’s quite possible. Only more fieldwork, bringing to light new discoveries of Devonian and Carboniferous fossils from the old Gondwana continents, might one day answer that question.
We acknowledge the Taungurung people of Mansfield area where this scientific work has taken place.
John Long receives funding from the Australian Research Council.
Grzegorz Niedzwiedzki receives funding from the Swedish Research Council and the European Research Council.
Per Ahlberg receives funding from the European Research Council and the Knut & Alice Wallenberg Foundation.
Source: The Conversation (Au and NZ) – By Roy M. Farman, Adjunct Associate Lecturer, School of Biological, Earth and Environmental Sciences, UNSW Sydney
Australian tree frogs today make up over one third of all known frog species on the continent. Among this group, iconic species such as the green tree frog (Litoria caerulea) and the green and golden bell frog (Litoria aurea), are both beloved for their vivid colours and distinctive calls.
In the Early Eocene epoch, 55 million years ago, Australia’s tree frogs were hopping across the Australian continent from one billabong to the next through a forested corridor that also extended back across Antarctica to South America. These were the last remnants of ancient supercontinent Gondwana.
In new research published today in the Journal of Vertebrate Paleontology, we identify Australia’s earliest known species of tree frog – one that once hopped and croaked around an ancient lake near the town of Murgon in south-eastern Queensland.
This research demonstrates tree frogs were present in Australia 30 million years earlier than previously thought, living alongside Australia’s earliest known snakes, songbirds and marsupials.
A common ancestor
Tree frogs (Pelodryadidae) have expanded discs on their fingers and toes enabling them to climb trees. Despite their name, however, they are known to occupy a wide range of habitats, from fast-flowing streams to ephemeral ponds.
Australia’s previously earliest tree frogs were recovered from Late Oligocene (about 26 million years old) and Early Miocene (23 million years old) fossil deposits. Late Oligocene frog fossils were found at Kangaroo Well in the Northern Territory and Lake Palankarinna in South Australia. They were also recently found in many deposits from the Riversleigh World Heritage Area in Queensland.
Artist’s reconstruction of the new species Litoria tylerantiqua (right) and previously described species Platyplectrum casca (left). Samantha Yabsley
It has long been known that South American tree frogs and Australian tree frogs shared a common Gondwanan ancestor. What is unknown is when this common ancestor lived.
Based on some molecular data, it has been estimated that the two groups separated from this common ancestor as recent as 32.9 million years ago.
A diverse fossil deposit
Our new study was based on frog fossils from a deposit near the town of Murgon, located on the traditional lands of the Waka Waka people of south-eastern Queensland. These fossils accumulated some 55 million years ago. This was between the time when a colossal meteorite took out the non-flying dinosaurs and the time when Australia broke free from the rest of Gondwana to become an isolated continent.
CT scans of preserved frogs were used to compare the three-dimensional shape of the fossil bones with those of living species. Roy Farman/UNSW Sydney
We used CT scans of frogs preserved in ethanol from Australian museum collections to compare the three-dimensional shape of the fossil bones with those of living species. This method is called three-dimensional geometric morphometrics. It has only been used on fossil frogs once before.
Using these new methods, we can unravel the relationships of these fossils to all other groups of frogs – both living and extinct.
Pushing back the evolutionary tree
From its diagnostic ilium (one of three paired pelvic bones), we identified a new species of Litoria from the family Pelodryadidae. We named this species Litoria tylerantiqua in honour of the late Michael Tyler, a renowned Australian herpetologist globally celebrated for his research on frogs and toads.
Litoria tylerantiqua joins the only other Murgon frog discovered so far, the ground-dwelling Platyplectrum casca, as the oldest frogs known from Australia. Both species have living relatives in Australia and New Guinea. This demonstrates the remarkable resilience over time of some of Australia’s most fragile creatures.
Our new research provides crucial new understanding that helps to calibrate molecular clock studies. This is a method scientists use to estimate when different species split from a common ancestor based on the calculated rate of genetic change over time.
Our research indicates the separation of Australian tree frogs and South American tree frogs is at minimum 55 million years ago. This pushes back the estimated molecular separation time for these groups by 22 million years.
Three left sided ilia (pelvic fossil bones) which collectively provided the diagnostic information needed to identify the new species. UNSW Sydney/Roy Farman
New insights to help endangered species
Unravelling the deep-time changes in the diversity and evolution of the ancestors of today’s living animals can provide important new insights into the way these groups have responded in the past to previous challenges. These challenges include former natural cycles of climate change.
The more we know about the fossil record, the more likely we will better anticipate future responses to similar challenges, including human-induced climate change.
This is especially important for critically endangered species such as the Southern Corroboree Frog and Baw Baw Frog. Now restricted to alpine habitats in New South Wales and Victoria, they are at serious risk of extinction due to global warming.
Roy M. Farman received funding from the Research Training Program through the University of New South Wales.
Mike Archer has received funding from the Australian Research Council, the Australian Geographic Society, the National Geographic Society, the Riversleigh Society Inc and private funding from Phil Creaser (the CREATE Fund in UNSW), K. and M. Pettit, D. and A. Jeanes and other benefactors.
Wildland fires usually begin to appear in Saskatchewan in April and May as snow melts and landscapes dry out. In mid-May 2025, however, moderate drought and strong winds exacerbated fires in the central part of the province. The OLI-2 (Operational Land Imager-2) on Landsat 9 captured this image (above) of smoke billowing from the Shoe fire on May 10, 2025. A wider view of the same image (below) also shows smoke from the Camp fire. The fires were burning in boreal forests in and around Narrow Hills Provincial Park. Infrared data from Landsat were overlaid on the image to help distinguish the heat signature of active fires. On May 12, 2025, Saskatchewan’s public safety agency reported 12 active fires across the province, half of which were contained. The park and all highways into and out of it were closed due to the fires, and officials issued several air quality alerts for the region. Saskatchewan officials have tallied 146 fires to date in 2025, nearly twice the five-year average. Fire activity has been intense enough to produce at least one towering chimney of smoke known as a pyrocumulonimbus (pyroCb) cloud. Researchers at the Cooperative Institute for Meteorological Satellite Studies at the University of Wisconsin-Madison confirmed the formation of the cloud in the Camp fire’s plume on May 8.
These fire-generated clouds are associated with extreme fire behavior that can hinder firefighting efforts and threaten communities. They can also inject large plumes of smoke into the stratosphere, where they can linger for several months, alter stratospheric circulation, and influence Earth’s radiative balance and the Antarctic ozone hole. Cloud heights at the time of the Landsat image were not high enough for the plume to qualify as a pyroCb, although the image does show signs of pyrocumulus (pyroCu) activity on May 10. NASA Earth Observatory images by Wanmei Liang, using Landsat data from the U.S. Geological Survey. Story by Adam Voiland.