Category: Academic Analysis

Source: ForeignAffairs4

Source: The Conversation – Indonesia – By Sabhrina Gita Aninta, Postdoctoral research fellow, University of Copenhagen

● Small-island populations are thriving in their small numbers.

● Small islands can be natural refugia for endangered megafauna.

● Protecting ecosystems on small islands is crucial for national conservation plans.

Animal populations on small islands are often thought to be unlikely to survive in the long term. Continued exploitation of small islands—such as mining in Raja Ampat, West Papua—poses a serious threat to local wildlife.

Governments often overlook biodiversity in these island ecosystems. Some small Indonesian islands are even listed for sale on websites like Private Island.

However, our new study in the Proceedings of the National Academy of Sciences found that endemic large mammals on small islands may, in fact, be thriving.

This finding is based on the genomic sequencing of two endemic species from the Wallacea region: the anoa (a dwarf buffalo) and the babirusa (a pig with upward-curving tusks that resemble antlers).

Although their populations are small and genetically less diverse, anoa and babirusa appear to thrive better on smaller islands than on larger ones. This could help them survive in the long term—contrary to previous assumptions.

In other words, small islands can serve as natural refuges for their native biodiversity—provided their ecosystems remain undisturbed. Thus, protecting these ecosystems is essential for their survival.

Resilient small population of large mammals

In theory, large-bodied mammals on small islands are prone to extinction due to limited mating opportunities. Restricted movement can lead to inbreeding, which reduces genetic diversity and jeopardises long-term health.

However, that may not be the full story. Through genomic analysis, we explored the population history of the anoa and babirusa to uncover what has happened over the past few hundred generations.

We sequenced the whole genomes of 67 anoa and 46 babirusa from across the Wallacea islands, including the large island of Sulawesi (in the north and southeast regions) and nearby smaller islands such as Buton and Togean.

We found that anoa and babirusa on Buton and Togean had lower genome-wide diversity and higher levels of inbreeding. Surprisingly, however, these populations were more efficient at purging harmful mutations compared to those on the larger island.

This suggests that small-island populations, having been isolated for long periods, have undergone natural genetic filtering—leaving individuals that are genetically “safe” and capable of thriving.

In contrast, populations on the larger Sulawesi Island carry a higher “genetic load.” This is likely a consequence of external, human disturbances such as forest degradation, mining, hunting, and poaching, which have fragmented their habitats and populations. As a result, these groups may be more genetically compromised.

According to the Kunming-Montreal Global Biodiversity Framework (2022), maintaining a sufficient effective population size (Ne) is crucial for long-term species survival. To avoid the risk of extinction, an Ne of at least 500—or roughly 5,000 individuals in total census size—is recommended.

Interestingly, our findings show that even small populations can remain viable over the long term—so long as they are protected from intense external pressures such as habitat loss, hunting, or disease outbreaks.

Therefore, before conducting any animal translocation to boost genetic diversity, it’s critical to carefully assess the ecological and genetic context of each population.

Baca juga:
Membangun ‘big data’ keanekaragaman hayati kita

Small islands as refugia

Our study shows that mammals on small islands can be genetically resilient, even with small population sizes.

Unfortunately, small-island habitats are often overlooked in national development plans.

While conservation of small islands is legally regulated, the reality on the ground is starkly different. Indonesia’s outermost islands have frequently been allocated for resource exploitation—often without adequate protection of their ecosystems.

Wallacea is just one example among many island groups that act as a natural laboratory for evolution. These islands have nurtured unique species for millions of years—species that are irreplaceable once lost.

As an archipelagic nation, Indonesia must prioritise biodiversity conservation by putting greater focus on habitat protection in small islands.

These islands can serve as natural refuges for endemic species—offering a more cost-effective and ecologically sound alternative to artificial captive breeding programmes.

This research is a collaboration between researchers from Queen Mary University of London (QMUL), Ludwig Maximilian Munich (LMU) Germany, and Universitas Indonesia, with the support of joint funding from NERC-Ristekdikti. Sabhrina Gita Aninta were funded by QMUL for her doctoral study that resulted in this research.

– ref. Research: Endemic anoa and babirusa show surprising resilience on small islands – https://theconversation.com/research-endemic-anoa-and-babirusa-show-surprising-resilience-on-small-islands-261063

Source: ForeignAffairs4

Source: The Conversation – Africa (2) – By Alessandro Arduino, Affiliate Lecturer, King’s College London

Alessandro Arduino has researched Africa’s security affairs with a particular focus on the use of private military companies and other guns-for-hire across the continent. In his latest book, Money for Mayhem, Arduino examines how military privatisation intersects with international power dynamics. Drawing on fieldwork, interviews and firsthand data, he tracks actors from Russia, China and the Middle East to explore how they profit from instability across Africa.

What war trends did you identify in your book?

In Money for Mayhem, I chart the rise of mercenaries, private military companies and hackers-for-hire, alongside emerging technologies like armed drones.

Nowhere does this rise ignite more readily than in Africa. The continent is flush with abundant natural resources that offer lucrative gains, but is hobbled by weak post-coup states desperate for foreign support. The continent has also been fractured by power vacuums, creating ineffective or weak regional and continental institutions that enable militant networks.

As a result, mercenaries and contractors have returned to the central stage in Africa. They were once the not-so-hidden hand in post-colonial civil wars, such as in Angola in the 1970s and Sierra Leone in the mid-1990s where highly trained mercenaries profited from the conflict.

Today, guns for hire wield profound geopolitical influence.

What did you find out about the key players?

Take Russia’s Wagner Group. It continues to be active from Libya to Sudan. The group is known for deploying paramilitary forces, conducting disinformation campaigns and supporting powerful political figures from Mali to the Central African Republic. Following its leader’s death in 2023, the Wagner Group shifted its operations. Rebranded as the Africa Corps,the group serves as a key instrument of Moscow’s influence on the continent.

Then there are Turkish private military outfits operating from Tripoli to Mogadishu. Turkey’s private military companies are fast becoming a key instrument in President Recep Erdogan’s foreign policy. What sets these companies apart is their ability to pair boots on the ground with Turkey’s battle-proven armed drones. This fusion of a rentable army and an off-the-shelf air force could become a powerful export, serving Ankara’s political and economic ambitions in Africa.

Then there are the Chinese private security companies, protecting Chinese investments and citizens in Africa. Their rise mirrors Beijing’s deepening footprint, where it is pouring billions into infrastructure and mining projects. In volatile nations like the Democratic Republic of Congo, Sudan and South Sudan, weak and unreliable local security forces have created a vacuum that’s being filled by Chinese security contractors.

Through the ages, the mercenary’s paradox has endured: despised yet indispensable. Their business thrives on perpetual chaos. Every ceasefire threatens their livelihood.

This dynamic was evident after Muammar Gaddafi’s fall in 2011 in Libya. Both the Government of National Accord in Tripoli and the rival Libyan National Army in the east turned to international mercenaries such as the Wagner Group and fighters from sub-Saharan Africa. This heavy dependence on foreign fighters obstructs national reconciliation.

The Wagner tale is instructive. Once a Kremlin proxy in resource-rich Africa, the group amassed its own power. It was dismantled when it outlived its usefulness. The dispatch of Russian generals to negotiate Wagner’s fate in 2023 from Libya to Niger was a lesson in power: the puppeteer remains firmly in control.

Russia’s foreign and defence ministries moved swiftly to reassure Middle Eastern and African partners that operations would continue uninterrupted after the death of Wagner’s leader. This signalled that unofficial Russian forces would maintain their presence on the ground.

What is happening that’s new?

The revolution in modern warfare is evident across Africa. Mercenaries, armed drones and AI-driven disinformation campaigns are redefining conflict. Today’s battlefields are evolving at such a dizzying pace that even seasoned military experts are routinely caught flatfooted.

The speed of change is unprecedented.

Drones, once the province of great powers, have become commonplace. Inexpensive, lethal, versatile and ever more autonomous, they patrol the skies daily, ushering in a remote-warfare era that upends ethical, strategic and tactical norms.

The cost of a suicide drone, for instance, typically runs into a few thousand US dollars. A battle tank averages US$3–4 million. Three such drones and a skilled pilot can destroy a single tank, dramatically shifting the cost-benefit equation on the modern battlefield.

Africa was an early proving ground: drones shaped the Libyan civil war. Since 2019, multiple incidents of precision air strikes conducted by unknown aircraft have occurred in apparent violation of a United Nations arms embargo.

In early 2025, drones served as an off-the-shelf air force in the bombing of Port Sudan. Explosions rocked the vital humanitarian gateway in Sudan’s ongoing civil war between the Sudanese Armed Forces and the paramilitary Rapid Support Forces.

Sudan’s army pinned these strikes on the Rapid Support Forces, highlighting the paramilitary group’s deadly embrace of drone warfare. Lacking a formal air force, drones offer the Rapid Support Forces a low-cost, high-lethality shortcut that delivers devastating blows while cloaking its operators in plausible deniability.

How else is the warfare landscape changing?

War is now being waged on other fronts as well.

Africa’s youthful population consumes information primarily via social media. This provides fertile ground for propaganda, disinformation and misinformation – amplified by artificial intelligence (AI) at minimal cost.

Deepfakes have burst onto the scene as a dire cybersecurity threat. AI-driven disinformation at an industrial scale is already a reality, magnifying hate speech and targeting the message to intended audiences with precision and at very low cost.

For example, TikTok’s own recommendation engine has already come under fire from African human rights groups for amplifying toxic rhetoric.

Already, false narratives thrive in Africa all on their own. AI’s true danger lies in its ability to turbocharge disinformation.

Governments recognise that defending the homeland no longer means guarding cables and servers alone. It also means safeguarding the integrity of information itself.

What needs to be done?

Based on my findings, I argue that the fractures today are tomorrow’s global crises. War has irrevocably changed, and its next phase is already upon us.

Marshalling global vigilance is a categorical imperative – or the world risks ceding control over violence. Building international consensus on already available enforcement mechanisms to regulate non-state armed actors is needed. There is also a need to strengthen global intelligence sharing to track the movements and influence of mercenaries across conflict zones.

Alessandro Arduino is an Associate Fellow at the Royal United Services Institute (RUSI)

– ref. Drones, disinformation and guns-for-hire are reshaping conflict in Africa: new book tracks the trends – https://theconversation.com/drones-disinformation-and-guns-for-hire-are-reshaping-conflict-in-africa-new-book-tracks-the-trends-262256

Source: ForeignAffairs4

Source: The Conversation – Africa – By Simphiwe Gongqa, PhD candidate, Rhodes University

The failure of many development initiatives has led some scholars, especially those associated with the post-development and decolonial schools of thought, to call for alternatives to development.

The idea of development is a very influential way of explaining inequalities between different parts of the world. Most people think of some parts of the world as ‘developed’ and others as ‘developing’ and believe that those in the ‘developing’ world need to follow in the footsteps of those ahead of them on a universal path to development.

However, critics of development reject this way of thinking. They believe that development damages the environment and is a form of cultural imperialism and that people should rather look to Indigenous concepts and practices to find alternative ways to live a good life. The African concept of Ubuntu is often mentioned.

This term can be explained with reference to the isiZulu saying ‘umuntu ngumuntu ngabantu’ which means ‘a person is a person through other people’. It entails an ethics of care, compassion and cooperation.

Concepts like Ubuntu are often contrasted with the idea of development. Advocates of alternatives believe that people in the Global South can draw on these concepts, rather than the idea of development, in order to improve their lives.

We both study development and are interested in how communities in Africa understand development, including the question of whether or not people in Africa are pursuing alternatives to development.

Based on our work, we contributed a chapter to a recent book which explores the question of alternatives to development in the Global South. Our contribution to this book looks specifically at the question of how South Africans understand development and Ubuntu and whether they see Ubuntu as a possible alternative to development.

We spoke to people living in four marginalised communities in KwaZulu-Natal and the Eastern Cape. Such communities would be regarded by mainstream development thinkers as in need of development. These communities were also chosen because the people living there would be likely to have some understanding of the concept of Ubuntu as residents are isiZulu or isiXhosa speakers, two of the sociolinguistic groups commonly associated with the idea of Ubuntu.

We found that people in these communities value both development and Ubuntu and see the two concepts as related to each other, but not necessarily in the way that either development or post-development theorists imagine. This study supports our previous research suggesting that people continue to value development.

Respondents’ views on development and Ubuntu

There were some differences in the way in which the communities spoke about development and Ubuntu. The KwaZulu-Natal communities placed emphasis on infrastructure, education and health, when asked to define how they understand development.

Typical responses of KwaZulu-Natal residents to the question ‘What is development?’ included:

• We want development … in order to have roads, [government housing], clinics and farming initiatives.

• When we say that a place is developed, we see schools, libraries, roads, churches and clinics.

• Things like water, houses [government housing], electricity, and sewerage systems.

• There should be libraries, schools, houses [government housing], water, electricity, sewerage systems and hospitals.

In the Eastern Cape, where only rural respondents were interviewed, residents mentioned infrastructure (roads, houses and schools) less often than those in KwaZulu-Natal and placed greater emphasis on income-generation opportunities, employment opportunities and support for farming. Some of the responses are given below:

• Development means the creation of jobs to me.

• Development means building. For example, building creches in the village, planting crops and creating jobs.

• Development is growth. For example, rearing chickens and other animals for you to grow financially.

When defining Ubuntu, respondents emphasised care, compassion, cooperation, helpfulness, mutual respect, harmony, consideration, dignity and a willingness to share.

Here are some of the typical responses given when people were asked to define Ubuntu:

It is being able to live with one another, you see. A person is a person because of other people kind of thing, and you must get along with all people and there shouldn’t be a person that you hate. You must be able to help another person in need if you can and there must be harmony with everyone.
Ubuntu is about unity and empathy and love, yes. If we speak of Ubuntu, we speak of thinking for each other, and helping each other.

When asked about the relationship between Ubuntu and development, most respondents suggested that Ubuntu and development can and should work together.

Respondents commonly argued that development could best be advanced if people showed Ubuntu, which was presented as an ethic of care and cooperation. Consider the following comment:

[Development and Ubuntu] go hand in hand because when I have something, I have to pull up a person that I see who is struggling and place them at an equal footing with me or maybe higher than me. I don’t look down on them because they are struggling, and I shouldn’t watch them walk to town everyday whilst I have a car that can help them because they are disadvantaged. If I have food, and a fellow person is hungry; I must give them food for free, yes, that is Ubuntu.

The strong sense from our interviews is that people want development (understood as the provision of basic services and the general improvement of their lives) and they want it to be brought about in a way that is characterised by an ethics of Ubuntu (understood as an ethic of care and cooperation).

Advocates of alternatives need to be cautious

Our research suggests that at least some Global South communities engage with concepts like Ubuntu and development in ways that do not support claims that people should abandon development and live according to Indigenous concepts and practices to have a better life. Rather than viewing Ubuntu as an alternative to development, the people we interviewed suggest that development and Ubuntu are complementary.

When seeking to articulate alternatives, it is important to be attentive to what people mean by development and Ubuntu so that activists and scholars from different communities can work together to build better lives for all.

We acknowledge the role of Nhlanhla Mkhutle who conducted the KwaZulu-Natal fieldwork for this study and who co-authored the chapter upon which this article is based.

The authors do not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

– ref. Ubuntu matters: rural South Africans believe community care should go hand-in-hand with development – https://theconversation.com/ubuntu-matters-rural-south-africans-believe-community-care-should-go-hand-in-hand-with-development-259422

Source: ForeignAffairs4

Source: The Conversation – USA (2) – By Stephen Herzog, Professor of the Practice, Middlebury Institute of International Studies at Monterey, Middlebury

Eighty years ago – on Aug. 6 and 9, 1945 – the U.S. military dropped atomic bombs on Hiroshima and Nagasaki, Japan, thrusting humanity into a terrifying new age. In mere moments, tens of thousands of people perished in deaths whose descriptions often defy comprehension.

The blasts, fires and lingering radiation effects caused such tragedies that even today no one knows exactly how many people died. Estimates place the death toll at up to 140,000 in Hiroshima and over 70,000 in Nagasaki, but the true human costs may never be fully known.

The moral shock of the U.S. attacks reverberated far beyond Japan, searing itself into the conscience of global leaders and the public. It sparked a movement I and others continue to study: the efforts of the international community to ensure that such horrors are never repeated.

Racing toward the brink

The memories of Hiroshima and Nagasaki cast a long shadow over global efforts to contain nuclear arms. The 1968 Treaty on the Non-Proliferation of Nuclear Weapons, more commonly known as the Nuclear Nonproliferation Treaty, was a powerful, if imperfect, effort to prevent future nuclear catastrophe. Its creation reflected not just morality, but also the practical fears and self-interests of nations.

As the years passed, views of the bombings as justified acts began to shift. Harrowing firsthand accounts from Hibakusha – the survivors – reached wide audiences. One survivor, Setsuko Thurlow, described the sight of other victims:

“It was like a procession of ghosts. I say ‘ghosts’ because they simply did not look like human beings. Their hair was rising upwards, and they were covered with blood and dirt, and they were burned and blackened and swollen. Their skin and flesh were hanging, and parts of the bodies were missing. Some were carrying their own eyeballs.”

Nuclear dangers increased further with the advent of hydrogen bombs, or thermonuclear weapons, capable of destruction far greater than the atomic bombs dropped on Hiroshima and Nagasaki. What had once seemed a decisive end to a global war now looked like the onset of an era wherein no city or civilization would truly be safe.

These shifting perceptions shaped how nations viewed the nuclear age. In the decades following World War II, nuclear technology rapidly spread. By the early 1960s, the United States and the Soviet Union aimed thousands of nuclear warheads at one another.

Meanwhile, there were concerns that countries in East Asia, Europe and the Middle East would acquire the bomb. U.S. President John F. Kennedy even warned that “15 or 20 or 25 nations” might be able to develop nuclear weapons during the 1970s, resulting in the “greatest possible danger” to humanity – the prospect of its extinction. This warning, like much of the early nonproliferation rhetoric, drew its urgency from the legacies of Hiroshima and Nagasaki.

Perhaps the starkest indication of the gravity of the stakes emerged during the Cuban missile crisis of October 1962. For 13 days, the world teetered on the edge of nuclear annihilation until the Soviet Union withdrew its missiles from Cuba in exchange for the secret withdrawal of U.S. missiles from Turkey. During those long days, U.S. and Soviet leaders – and external observers – witnessed how quickly the risks of global destruction could escalate.

Crafting the grand bargain

In the wake of such “close calls” – moments where nuclear war was narrowly averted due to individual judgment or sheer luck – diplomacy accelerated.

Negotiations on a treaty to control nuclear proliferation continued at meetings of the Eighteen Nation Disarmament Committee in Geneva from 1965 to 1968. While the enduring horrors of Hiroshima and Nagasaki helped to drive the momentum, national interests largely shaped the talks.

There were three groups of negotiating parties. The United States was joined by its NATO allies Britain, Canada, Italy and France – which only observed. The Soviet Union led a communist bloc containing Bulgaria, Czechoslovakia, Poland and Romania. And there were nonaligned countries: Brazil; Burma, now known as Myanmar; Ethiopia; India; Mexico; Nigeria; Sweden, which only joined NATO in 2024; and the United Arab Republic, now known as Egypt.

For the superpowers, a treaty to limit the spread of the bomb was as much a strategic opportunity as a moral imperative.
Keeping the so-called “nuclear club” small would not only stabilize international tensions, but it would also cement Washington’s and Moscow’s global leadership and prestige.

U.S. leaders and their Soviet counterparts therefore sought to promote nonproliferation abroad. Perhaps just as important as ensuring nuclear forbearance among their adversaries was preventing a cascade of nuclear proliferation among allies that could embolden their friends and spiral out of control.

Standing apart from these Cold War blocs were the nonaligned countries. Many of them approached the atomic age through a humanitarian and moral lens. They demanded meaningful action toward nuclear disarmament to ensure that no other city would suffer the tragic fate of Hiroshima and Nagasaki.

The nonaligned countries refused to accept a two-tiered treaty merely codifying inequality between nuclear “haves” and “have-nots.” In exchange for agreeing to forgo the bomb, they demanded two crucial commitments that shaped the resulting treaty into what historians often describe as a “grand bargain.”

The nonaligned countries agreed in the treaty to permit the era’s existing nuclear powers – Britain, China, France, the Soviet Union (later Russia) and the United States – to temporarily maintain their arsenals while committing to future disarmament. But in exchange, they were promised peaceful nuclear technology for energy, medicine and development. And to reduce the risks of anyone turning peaceful nuclear materials into weapons, the treaty empowered the International Atomic Energy Agency to conduct inspections around the world.

Legacies and limits

The treaty entered into force in 1970 and with, 191 member nations, is today among the world’s most universal accords. Yet, from the outset, its provisions faced limits. Nuclear-armed India, Israel and Pakistan have always rejected the treaty, and North Korea later withdrew to develop its own nuclear weapons.

In response to evolving challenges, such as the discovery of Iraq’s clandestine nuclear weapons program in the early 1990s, International Atomic Energy Agency safeguard efforts grew more stringent. Many countries agreed to accept nuclear facility inspections on shorter notice and involving more intrusive tools as part of the initiative to detect and deter the development of the world’s most powerful weapons. And the countries of the world extended the treaty indefinitely in 1995, reaffirming their commitment to nonproliferation.

The treaty represents a complex compromise between morality and pragmatism, between the painful memories of Hiroshima and Nagasaki and hard-edged geopolitics. Despite its many imperfections and its de facto promotion of nuclear inequality, the treaty is credited with limiting nuclear proliferation to just nine countries today. It has done so through civilian nuclear energy incentives and inspections that give countries confidence that their rivals are not building the bomb. Countries also put pressure on each other to obey the rules, such as when the international community condemned, sanctioned and isolated North Korea after it withdrew from the treaty and tested a nuclear weapon.

But the treaty continues to face serious challenges. Critics argue that its disarmament provisions remain vague and unfulfilled, with some scholars contending that nonnuclear countries should exit the treaty to encourage the great powers to disarm. Nuclear-armed countries continue to modernize – and in some cases, expand – their arsenals, eroding trust in the grand bargain.

The behavior of individual countries also points to strains on the treaty. Russia’s persistent nuclear threats during its war on Ukraine show how deeply possessors may still rely on these weapons as tools of coercive foreign policy. North Korea continues to wield its nuclear arsenal in ways that undermine international security. Iran might consider proliferation to deter future Israeli and U.S. strikes on its nuclear facilities.

Still, I would argue that declaring the treaty to be dead is simply premature. Critics have predicted its demise since the treaty’s inception in 1968. While many countries have growing frustrations with the existing system of nonproliferation, most of them still see more benefit in staying than walking away from the treaty.

The treaty may be embattled, but it remains intact. Worryingly, the world today appears far removed from the vision of avoiding nuclear catastrophe that Hiroshima and Nagasaki helped awaken. As nuclear dangers intensify and disarmament stalls, moral clarity risks fading into ritual remembrance.

I believe that for the sake of humanity’s future, the tragedies of the atomic bombings must remain a stark and unmistakable warning, not a precedent. Ultimately, the Nuclear Nonproliferation Treaty’s continued relevance depends on whether nations still believe that shared security begins with shared restraint.

Stephen Herzog does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. The treaty meant to control nuclear risks is under strain 80 years after the US bombings of Hiroshima and Nagasaki – https://theconversation.com/the-treaty-meant-to-control-nuclear-risks-is-under-strain-80-years-after-the-us-bombings-of-hiroshima-and-nagasaki-262164

Source: ForeignAffairs4

Source: The Conversation – USA (3) – By Julie Walsh, Whitehead Associate Professor of Critical Thought and Associate Professor of Philosophy, Wellesley College

Between 1400 and 1780, an estimated 100,000 people, mostly women, were prosecuted for witchcraft in Europe. About half that number were executed – killings motivated by a constellation of beliefs about women, truth, evil and magic.

But the witch hunts could not have had the reach they did without the media machinery that made them possible: an industry of printed manuals that taught readers how to find and exterminate witches.

I regularly teach a class on philosophy and witchcraft, where we discuss the religious, social, economic and philosophical contexts of early modern witch hunts in Europe and colonial America. I also teach and research the ethics of digital technologies.

These fields aren’t as different as they seem. The parallels between the spread of false information in the witch-hunting era and in today’s online information ecosystem are striking – and instructive.

Birth of a publishing empire

The printing press, invented around 1440, revolutionized how information spread – helping to create the era’s equivalent of a viral conspiracy theory.

By 1486, two Dominican friars had published the “Malleus Maleficarum,” or “Hammer of Witches.” The book has three central claims that came to dominate the witch hunts.

First, it describes women as morally weak and therefore more likely to be witches. Second, it tightly links witchcraft with sexuality. The authors claim that women are sexually insatiable – part of what leads them to witchcraft. Third, witchcraft involves a pact with the devil, who tempts would-be witches through pleasures such as orgies and sexual favors. After establishing these “facts,” the authors conclude with instructions for interrogating, torturing and punishing witches.

The book was a hit. It had more than two dozen editions and was translated into multiple languages. While “Malleus Maleficarum” was not the only text of its kind, its influence was enormous.

Prior to 1500, witch hunts in Europe were rare. But after the “Malleus Maleficarum,” they picked up steam. Indeed, new printings of the book correlate with surges in witch-hunting in Central Europe. The book’s success wasn’t just about content; it was about credibility. Pope Innocent VIII had recently affirmed the existence of witches and conferred authority on inquisitors to persecute them, giving the book further authority.

Ideas about witches [from earlier texts and folklore] – such as the fact that witches could use spells to make penises vanish – were recycled and repackaged in the “Malleus Maleficarum,” which in turn served as a “source” for future works. It was often quoted in later manuals and woven into civic law.

The popularity and influence of the book helped crystallize a new domain of expertise: demonologist, an expert on the nefarious activities of witches. As demonologists repeated one another’s spurious claims, an echo chamber of “evidence” was born. The identity of the witch was thus formalized: dangerous and decisively female.

Skeptics fight back

Not everyone bought into the witch hysteria. As early as 1563, dissenting voices emerged – though, notably, most didn’t argue that witches weren’t real. Instead, they questioned the methods used to identify and prosecute them.

Dutch physician Johann Weyer argued that women accused of witchcraft were suffering from melancholia – what we might now call mental illness – and needed medical treatment, not execution. In 1580, French philosopher Michel de Montaigne visited imprisoned witches and concluded they needed “hellebore rather than hemlock”: medicine rather than poison.

These skeptics also identified something more insidious: the moral responsibility of people spreading the stories. In 1677, English chaplain, physician and philosopher John Webster wrote a scathing critique, claiming that most demonologists’ texts were straightforward copy and paste jobs where the authors repeated one another’s lies. The demonologists offered no original analysis, no evidence and no witnesses – failing to meet the standards of good scholarship.

The cost of this failure was enormous. As Montaigne wrote, “The witches of my neighborhood are in mortal danger every time some new author comes along and attests to the reality of their visions.”

Demonologists benefited from the social and political status associated with the popularity of their books. The financial benefit was, for the most part, enjoyed by the printers and booksellers – what today we refer to as publishers.

Witch hunts petered out throughout the 1700s across Europe. Doubt about the standards of evidence, and increased awareness that accused “witches” may have been suffering from delusion, were factors in the end of the persecution. The skeptics’ voices were heard.

Psychology of viral lies

Early modern skeptics understood something we’re still grappling with today: Certain people are more vulnerable to believing extraordinary claims. They identified “melancholics,” people predisposed to anxiety and fantastical thinking, as particularly susceptible.

Nicolas Malebranche, a 17th-century French philosopher, believed that our imaginations have enormous power to convince us of things that are not true – especially fear of invisible, malevolent forces. He noted that “extravagant tales of witchcraft are taken as authentic histories,” increasing people’s credulity. The more stories, and the more they were told, the greater the influence on the imagination. The repetition served as false confirmation.

“If they were to cease punishing (women accused of witchcraft) and treat them as mad people,” Malebranche wrote, “in a little while they would no longer be sorcerers.”

Today’s researchers have identified similar patterns in how misinformation and disinformation – false information intended to confuse or manipulate people – spreads online. We’re more likely to believe stories that feel familiar, stories that connect to content we’ve previously seen. Likes, shares and retweets becomes proxies for truth. Emotional content designed to shock or outrage spreads far and fast.

Social media channels are particularly fertile ground. Companies’ algorithms are designed to maximize engagement, so a post that receives likes, shares and comments will be shown to more people. The more viewers, the higher the likelihood of more engagement, and so on – creating a cycle of confirmation bias.

Speed of a keystroke

Early modern skeptics reserved their harshest criticism not for those who believed in witches but for those who spread the stories. Yet they were curiously silent on the ultimate arbiters and financial beneficiaries of what got printed and circulated: the publishers.

Today, 54% of American adults get at least some news from social media platforms. These platforms, like the printing presses of old, don’t just distribute information. They shape what we believe through algorithms that prioritize engagement over accuracy: The more a story is repeated, the more priority it gets.

The witch hunts offer a sobering reminder that delusion and misinformation are recurring features of human society, especially during times of technological change and social upheaval. As we navigate our own information revolution, those early skeptics’ questions remain urgent: Who bears responsibility when false information leads to real harm? How do we protect the most vulnerable from exploitation by those who profit from confusion and fear?

In an age when anyone can be a publisher, and extravagant tales spread at the speed of a keystroke, understanding how previous societies dealt with similar challenges isn’t just academic – it’s essential.

Julie Walsh receives funding from the National Science Foundation

– ref. From printing presses to Facebook feeds: What yesterday’s witch hunts have in common with today’s misinformation crisis – https://theconversation.com/from-printing-presses-to-facebook-feeds-what-yesterdays-witch-hunts-have-in-common-with-todays-misinformation-crisis-260995

Source: ForeignAffairs4

Source: The Conversation – USA (2) – By Lauren Gifford, Faculty, Ecosystem Science & Sustainability; Director, Soil Carbon Solutions Center, Colorado State University

The International Court of Justice issued a landmark advisory opinion in July 2025 declaring that all countries have a legal obligation to protect and prevent harm to the climate.

The court, created as part of the United Nations in 1945, affirmed that countries must uphold existing international laws related to climate change and, if they fail to act, could be held responsible for damage to communities and the environment.

The opinion opens a door for future claims by countries seeking reparations for climate-related harm.

But while the ruling is a big global story, its legal effect on the U.S. is less clear. We study climate policies, law and solutions. Here’s what you need to know about the ruling and its implications.

Why island nations called for a formal opinion

The ruling resulted from years of grassroots and youth-led organizing by Pacific Islanders. Supporters have called it “a turning point for frontline communities everywhere.”

Small island states like Vanuatu, Tuvalu, Barbados and others across the Pacific and Caribbean are among the most vulnerable to climate change, yet they have contributed little to global emissions.

For many of them, sea-level rise poses an existential threat. Some Pacific atolls sit just 1 to 2 meters above sea level and are slowly disappearing as waters rise. Saltwater intrusion threatens drinking water supplies and crops.

Their economies depend on tourism, agriculture and fishing, all sectors easily disrupted by climate change. For example, coral reefs are bleaching more often and dying due to ocean warming and acidification, undermining fisheries, marine biodiversity and economic sectors such as tourism.

When disasters hit, the cost of recovery often forces these countries to take on debt. Climate change also undermines their credit ratings and investor confidence, making it harder to get the money to finance adaptive measures.

Tuvalu and Kiribati have discussed digital nationhood and leasing land from other countries so their people can relocate while still retaining citizenship. Some projections suggest nations like the Maldives or Marshall Islands could become largely uninhabitable within decades.

For these countries, sea-level rise is taking more than their land – they’re losing their history and identity in the process. The idea of becoming climate refugees and separating people from their homelands can be culturally destructive, emotionally painful and politically fraught as they move to new countries.

More than a nonbinding opinion

The International Court of Justice, commonly referred to as the ICJ or World Court, can help settle disputes between states when requested, or it can issue advisory opinions on legal questions referred to it by authorized U.N. bodies such as the General Assembly or Security Council. The advisory opinion process allows its 15 judges to weigh in on abstract legal issues – such as nuclear weapons or the Israeli occupation of the Palestinian territories – without a formal dispute between states.

While the court’s advisory opinions are nonbinding, they can still have a powerful impact, both legally and politically.

The rulings are considered authoritative statements regarding questions of international law. They often clarify or otherwise confirm existing legal obligations that are binding.

What the court decided

The ICJ was asked to weigh in on two questions in this case:

1. “What are the obligations of States under international law to ensure the protection of the climate system … from anthropogenic emissions of greenhouse gases?”

2. “What are the legal consequences under these obligations for States where they, by their acts and omissions, have caused significant harm to the climate system?”

In its 140-page opinion, the court cited international treaties and relevant scientific background to affirm that obligations to protect the environment are indeed a matter of international environmental law, international human rights law and general principles of state responsibility.

The decision means that in the authoritative opinion of the international legal community, all countries are under an obligation to contribute to the efforts to reduce global greenhouse emissions.

To the second question, the court found that in the event of a breach of any such obligation, three additional obligations arise:

1. The country in breach of its obligations must stop its polluting activity, which would mean excess greenhouse gas emissions in this case.

2. It must ensure that such activities do not occur in the future.

3. It must make reparations to affected states in terms of cleanup, monetary payment and apologies.

The court affirmed that all countries have a legal duty under customary international law, which refers to universal rules that arise from common practices among states, to prevent harm to the climate. It also clarified that individual countries can be held accountable, even in a crisis caused by many countries and other entities. And it emphasized that countries that have contributed the most to climate change may bear greater responsibility for repairing the damage under an international law doctrine called “common but differentiated responsibility,” which is commonly found in international treaties concerning the environment.

While the ICJ’s opinion doesn’t assign blame to specific countries or trigger direct reparations, it may provide support for future legal action in both international and national courts.

What does the ICJ opinion mean for the US?

In the U.S., this advisory opinion is unlikely to have much legal impact, despite a long-standing constitutional principle that “international law is part of U.S. law.”

U.S. courts rarely treat international law that has not been incorporated into domestic law as binding. And the U.S. has not consented to ICJ jurisdiction in previous climate cases.

Contentious cases before international tribunals can be brought by one country against another, but they require the consent of all the countries involved. So there is little chance that the United States’ responsibility for climate harms will be adjudicated by the World Court anytime soon.

Still, the court’s opinion sends a clear message: All countries are legally obligated to prevent climate harm and cannot escape responsibility simply because they aren’t the only nation to blame.

The unanimous ruling is particularly remarkable given the current hostile political climate in the United States and other industrial nations around climate change and responses to it. It represents a particularly forceful statement by the international community that the responsibility to ensure the health of the global environment is a legal duty held by the entire world.

The takeaway

The ICJ’s advisory opinion marks a turning point in the global effort to hold countries responsible for climate change.

Vulnerable countries now have a more concrete, legally grounded base to claim rights and press for accountability against historical and ongoing climate harm – including financial claims.

How it will be used in the coming years remains unclear, but the opinion gives small island states in particular a powerful narrative and a legal tool set.

Lauren Gifford receives funding from the National Science Foundation and the US Department of Agriculture.

Daimeon Shanks-Dumont does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. The World Court just ruled countries can be held liable for climate change damage – what does that mean for the US? – https://theconversation.com/the-world-court-just-ruled-countries-can-be-held-liable-for-climate-change-damage-what-does-that-mean-for-the-us-262272

Source: ForeignAffairs4

Source: The Conversation – USA – By William E. Watson, Professor of History, Immaculata University

When commuters on the R5 SEPTA train that connects suburban Chester County to Philadelphia approach Malvern station, they might spot a square stone monument on the right side in a clearing surrounded by a thick stand of forest.

Above it, a sign paid for by the Amtrak electrical workers union and suspended from the trees reads:

BURIAL PLOT OF IRISH RAILROAD WORKERS: At this site, known as Duffy’s Cut, fifty-seven Irish immigrant railroad workers from the counties of Donegal, Tyrone, Derry and Leitrim died of cholera and murder in the summer of 1832.

I’m a historian at Immaculata University, about one mile west of Duffy’s Cut. In 2004, my colleagues and I were the ones to discover the mass grave when we excavated the site with the permission of the Pennsylvania Historical and Museum Commission.

My students, who were about the same age as Duffy’s workers in 1832, provided a great deal of the labor at the excavation.

More recently, in May 2025, we discovered human remains that suggest a second Irish immigrant railroader mass grave 11 miles west of Duffy’s Cut, in Downingtown.

57 dead railroaders

Duffy’s Cut was named after an Irish Catholic immigrant railroad contractor named Philip Duffy, who lived from 1783-1871 and was probably from County Donegal in northwest Ireland.

I learned about the site and its possible mass grave from Pennsylvania Railroad documents that survived in my family.

A 1909 file, labeled “History of Duffy’s Cut Stone enclosure east of Malvern, Pennsylvania, which marks the burial place of 57 track laborers who were victims of the cholera epidemic of 1832,” was compiled by future Pennsylvania Railroad president Martin W. Clement when he was an assistant supervisor. My grandfather, who was Clement’s executive assistant and later director of personnel, obtained the file before the records were auctioned off in 1972, and my brother showed me the file in 2002.

The Philadelphia & Columbia Railroad, the predecessor of the Pennsylvania Railroad, wanted to shorten the travel time from Philadelphia to Pittsburgh from three to four weeks by Conestoga wagon to three to four days by rail, canal and river.

The file my brother had in his possession stated that the dead railroaders at Duffy’s Cut were young men, recently arrived from Ireland. It also said the cost of mile 59 was vastly more expensive than the typical Philadelphia & Columbia Railroad mile. Laying a typical mile of P&C railroad cost US$5,000 in the 1830s. But at mile 59, gouging the landscape with a “cut” to lay the tracks on level ground and bridging the valley with a fill – an earthen bridge – cost $32,000. Although the work was especially difficult, the common laborers received about 25 cents a day.

Most of the men had sailed from the city of Derry in the north of Ireland to Philadelphia from April to June of 1832 aboard the John Stamp. The ship pulled into the Lazaretto quarantine station on the Delaware River in Essington, Pennsylvania, before sailing on to Philadelphia.

No one on the John Stamp was reported to be ill. This was the height of the 1832 cholera epidemic that ultimately killed at least 10,000 people in the U.S.

Forty-seven laborers from the John Stamp ship joined 10 other Irish immigrant workers who were already living with Duffy in a rental house in Willistown, a mile south of the work site.

Yet almost as soon as they arrived to the work camp at mile 59, so did cholera, which had spread to Philadelphia from New York City.

Cholera in the camps

Americans could read about the spread of cholera across Europe in 1831 in the newspapers, but very little was known about the disease until decades later.

Cholera is a bacterial infection that spreads due to poor sanitary practices in which human feces get into drinking water, via excrement passed into streams or by seepage from outhouses to wells.

But in 1832, people believed cholera was linked to intemperance and vice, which were thought to weaken the body. According to the prevailing miasma theory, it caused outbreaks once airborne. Immigrants and the poor were thought to be especially susceptible to the disease and primary vectors for its spread.

Cholera causes extreme diarrhea and vomiting that lead to rapid electrolyte loss. In 1832 it was fatal in about 50% of cases. In the Delaware Valley, cholera cases mounted from July into August 1832. Philadelphia registered its peak number of cases, 173, on Aug. 6 and peak number of deaths, 76, on Aug. 7. The hardest-hit areas in the region were working-class neighborhoods and canal and railroad work camps.

A typical crew on a P&C mile numbered 100 to 120 men. However, the work by Irish immigrants was segregated along sectarian lines on the railroads in the U.S., as it was in the Belfast dockyards at the same time. The other half of the workers at mile 59, according to Canal Commission reports, were Irish Protestant immigrants who worked for an Irish Protestant contractor and did the less dangerous work of laying tracks. They did not die of cholera.

Signs of a massacre

To excavate the site, we partnered with the Chester County Emerald Society, a law enforcement group that cleared our work with the county district attorney, and the coroner, in case we found human remains. The University of Pennsylvania Museum provided ground-penetrating radar, as well as archaeological and anthropological assistance for the dig. Staff trained my students in how to properly excavate and handle artifacts and bones.

Our research team uncovered seven sets of remains between 2009 and 2012 in the remaining eastern portions of the fill. The skeletons had been buried in coffins sealed with an exceptional number of nails, perhaps to contain the cholera.

Analysis at the UPenn Museum showed evidence of violence to each of the skulls – with one skull showing both an ax blow and a bullet encased in the skull. Researchers found no evidence of defensive wounds on any skeleton, suggesting that the men might have been tied up before being killed.

After our team analyzed the remains, we came to the startling conclusion that the men didn’t die from cholera – they were massacred.

I believe that fear of cholera, an epidemic that some clergymen in America and England called “a chastisement for the sins of the people,” and anti-immigrant sentiment fueled violence against them by native-born populations.

After forensic examinations of the remains, five of the skeletons were reburied during a ceremony at West Laurel Hill Cemetery in Bala Cynwyd in 2012. My team determined the identities of two of the deceased – 18-year-old John Ruddy from County Donegal and 29-year-old Catherine Burns, the daughter of one of the workers, from County Tyrone – and their remains were returned to their home counties in Ireland in 2013 and 2015.

A second mass grave in Chester County

Historical records led us to what we believe is a second mass grave in Chester County.

An article in the Nov. 7, 1832, issue of the Village Record newspaper in West Chester reported that one man from Duffy’s Cut fled westward down the unfinished track line to another Irish immigrant railroader crew “near the line of East Bradford and East Caln.”

This was P&C mile 48 in Downingtown, Pennsylvania. It was under the direction of Irish immigrant contractor Peter Connor, whose crew of 100 to 120 men was reported to have all died around the same time as Duffy’s crew.

Forty years later, Charles Pennypacker’s 1909 “History of Downingtown” recorded that the dead Irishmen in Downingtown were carted north to a field where they were buried in a mass grave on the property of present-day Northwood Cemetery, “in the eastern part of the cemetery, near the gully.”

On May 15, 2025, the Duffy’s Cut team unearthed the first human remains from the Downingtown crew in the exact place reported by Pennypacker. This work has just started.

Up and down the East Coast, there are numerous mass graves of anonymous workers who died of epidemics and overwork in the 1820s and 1830s. Most of those people will never have their stories told.

At Duffy’s Cut, and now at the Downingtown site, we hope to humanize some of the hardworking immigrants who died building a crucial part of America’s industrial landscape.

Visitors can view artifacts found at Duffy’s Cut at the Duffy’s Cut Museum in the Gabriele Library at Immaculata University in Malvern, Pa.

Read more of our stories about Philadelphia and Pennsylvania.

William E. Watson serves as the unpaid director of the 501 c 3 educational non-profit and in 2016 served as director of an NEH summer teachers’ institute at Immaculata University. .

– ref. Historian uncovers evidence of second mass grave of Irish immigrant railroaders in Pennsylvania who suffered from cholera, violence and xenophobia – https://theconversation.com/historian-uncovers-evidence-of-second-mass-grave-of-irish-immigrant-railroaders-in-pennsylvania-who-suffered-from-cholera-violence-and-xenophobia-261442

Source: ForeignAffairs4

Source: The Conversation – USA – By Yashas Hariprasad, Assistant Professor of Computer Science, California State University, East Bay

We have developed a new way to secure video transmissions so even quantum computers in the future won’t be able to break into private video livestreams or recordings. We are computer scientists who study computer security. Our research introduces quantum-safe video encryption, which combines two complementary techniques: quantum encryption and secure internet transmission.

With our encryption system, a hacker wouldn’t be able to access or understand the video data because it’s scrambled using a quantum key that changes unpredictably. Cryptographic keys scramble data so that only someone with the correct key can unscramble it. If the hacker even tries to peek, the system detects it and raises an alarm. The video also travels in the digital equivalent of a locked box over the internet, so nobody can swap or tamper with it in transit.

Quantum encryption scrambles video data using truly random cryptographic keys based on quantum physics. Unlike traditional encryption that relies on mathematical complexity, quantum encryption uses the fundamental unpredictability of quantum states to generate unbreakable keys.

Quantum refers to the scale of atoms and molecules, which behave in counterintuitive ways. Quantum computers take advantage of these strange behaviors to solve problems that are difficult or impossible for ordinary computers.

We combine this quantum encryption scheme with secure transmission over the internet using transport layer security. This is the encryption scheme used to keep connections between web browsers and web pages private.

Our approach works by converting each video frame into a quantum image representation, essentially a mathematical framework that captures visual information in quantum states. We then scramble the data by combining it with quantum-generated random keys, making the encrypted video statistically indistinguishable from pure noise.

And because quantum encryption is resistant to future technology such as quantum computers, that video is safe for years to come.

Why it matters

Today’s encryption works well, until tomorrow’s quantum computers arrive. These super-powerful machines will be able to crack most current encryption methods in seconds. That means today’s private videos, stored on cloud platforms or transmitted over the internet, could be decrypted years from now.

More dangerously, these stolen videos can be manipulated into deepfakes: AI-generated videos that can make anyone appear to say or do anything. A forged video can ruin reputations, sway decisions and even incite violence. A secure encryption system not only protects privacy, it helps protect truth.

What other research is being done

Researchers around the world are exploring quantum key distribution to securely share encryption keys. Others use chaos theory, deep learning or hybrid algorithms to secure video and image content.

But most existing work focuses on images, or only on key exchange, without fully securing live or stored video data.

What’s next

We’re working toward scaling this system to encrypt full video files and real-time video streams, such as those used in video conferencing and surveillance systems.

Next steps include reducing the performance overhead for smoother playback and testing the system in real-world environments. We’re also exploring how it can work alongside deepfake detection tools, so we not only stop hackers from accessing videos but also prove the videos haven’t been altered.

While our framework shows strong early results, practical use will depend on phased adoption as quantum systems become more accessible over the years.

The Research Brief is a short take on interesting academic work.

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

– ref. Quantum scheme protects videos from prying eyes and tampering – https://theconversation.com/quantum-scheme-protects-videos-from-prying-eyes-and-tampering-261049

Source: ForeignAffairs4

Source: The Conversation – USA (3) – By William Cornwell, Associate Professor of Cardiology, University of Colorado Anschutz Medical Campus

On July 24, 2025, the American pro wrestling celebrity Hulk Hogan, whose real name was Terry Bollea, died at the age of 71. Hogan had chronic lymphocytic leukemia and a history of atrial fibrillation, or A-fib, a condition in which the upper chambers of the heart, or atria, beat irregularly and often rapidly. His cause of death has been confirmed as acute myocardial infarction, commonly known as a heart attack.

Hogan became a household name in the 1980s and has long been known for maintaining fitness and a highly active lifestyle, despite having had 25 surgeries in 10 years, including a neck surgery in May.

Hogan’s death has brought renewed attention to the importance of maintaining heart health through exercise. Many people think that bodybuilders are the “picture” of health. However, the truth is that too much muscle can increase strain on the heart and may actually be harmful. It may seem ironic, then, that people who exercise to extreme levels and appear healthy on the outside can, in fact, be quite unhealthy on the inside.

As the director of sports cardiology at the University of Colorado Anschutz Medical Campus, I see patients of all age groups and at varying levels of fitness who are interested in promoting health by incorporating exercise into their lifestyle, or by optimizing their current exercise program.

Exercise is the foundation for good health

When people think of vital signs, they usually think about things such as heart rate, blood pressure, temperature, breathing rate and blood oxygen levels. However, the American Heart Association also includes “fitness” as an additional vital sign that should be considered when determining a patient’s overall health and risk of heart disease, cancer and death.

While fitness may be determined in various ways, the best way is by checking what is known as peak oxygen uptake, or VO2 max, through a specialized evaluation called a cardiopulmonary exercise test. These can be performed at many doctors’ offices and clinics, and they provide a wealth of information related to overall health, as well as heart, lung and skeletal muscle function.

Exercise is one of the most effective interventions to prolong life and reduce the risk of developing chronic diseases throughout life – in effect, prolonging lifespan and improving health span, meaning the number of years that people spend in good health.

In fact, a large study done by the Cleveland Clinic found that a low level of fitness poses a greater risk of death over time than other traditional risk factors that people commonly think of, such as smoking, diabetes, coronary artery disease and severe kidney disease.

When it comes to brain health, the American Stroke Association emphasizes the importance of routine exercise and avoiding sedentary behavior in their 2024 guidelines on primary prevention of stroke. The risk of stroke increases with the amount of sedentary time spent throughout the day and also with the amount of time spent watching television, particularly four hours or more per day.

Regarding cognitive decline, the Alzheimer’s Society states that regular exercise reduces the risk of dementia by almost 20%. Furthermore, the risk of Alzheimer’s disease is twice as high among individuals who exercise the least, when compared to individuals who exercise the most.

There is also strong evidence that regular exercise reduces the risk of certain types of cancer, especially, colon, breast and endometrial cancer. This reduction in cancer risk is achieved through several mechanisms.

For one, obesity is a risk factor for up to 13 forms of cancer, and excess body weight is responsible for about 7% of all cancer deaths. Regular exercise helps to maintain a healthy weight.

Second, exercise helps to keep certain hormones – such as insulin and sex hormones – within a normal range. When these hormone levels get too high, they may increase cancer cell growth. Exercise also helps to boost the immune system by improving the body’s ability to fight off pathogens and cancer cells. This in turn helps prevent cancer cell growth and also reduces chronic inflammation, which left unchecked damages tissue and increases cancer risk.

Finally, exercise improves the quality of life for all people, regardless of their health or their age. In 2023, Hulk Hogan famously quipped, “I’m 69 years old, but I feel like I’m 39.”

The optimal dose of exercise

Major health organizations, such as the American Heart Association, American Cancer Society and Department of Health and Human Services, all share similar recommendations when it comes to the amount of exercise people should aim for.

These organizations all recommend doing at least 150 minutes per week of moderate-intensity exercise, or at least 75 minutes per week of vigorous-intensity exercise. Moderate exercises include activities such as walking briskly (2.5 to 4 miles per hour), playing doubles tennis or raking the yard. Vigorous exercise includes activities such as jogging, running or shoveling snow.

A good rule of thumb for figuring out how hard a specific exercise is is to apply the “talk test”: During moderate-intensity exercise, you can talk, but not sing, during the activity. During vigorous intensity exercise, you can say only a few words before having to stop and take a breath.

There is a lot of solid data to support these recommendations. For example, in a very large analysis of about 48,000 people followed for 30 years, the risk of death from any cause was about 20% lower among those who followed the physical activity guidelines for Americans.

Life can be busy, and some people may find it challenging to squeeze in at least 150 minutes of exercise throughout the course of the week. However, “weekend warriors” – people who cram all their exercise into one to two days over the weekend – still receive the benefits of exercise. So, a busy lifestyle during the week should not prevent people from doing their best to meet the guidelines.

What about the number of steps per day? In a new analysis in The Lancet, when compared with walking only 2,000 steps per day, people who walked 7,000 steps per day had a 47% lower risk of death from any cause, a 25% lower risk of developing heart disease, about a 50% lower risk of death from heart disease, a 38% lower risk of developing dementia, a 37% lower risk of dying from cancer, a 22% lower risk of depression and a 28% lower risk of falls.

Historically, people have aimed for 10,000 steps per day, but this new data indicates that there are tremendous benefits gained simply from walking 7,000 steps daily.

It’s never too late to start

One question that many patients ask me – and other doctors – is: “Is it ever too late to start exercising?” There is great data to suggest that people can reap the benefits even if they don’t begin an exercise program into their 50s.

Being sedentary while aging will cause the heart and blood vessels to stiffen. When that happens, blood pressure can go up and people may be at risk of other things such as heart attacks, strokes or heart failure.

However, in a study of previously sedentary adults with an average age of 53, two years of regular exercise reversed the age-related stiffening of the heart that otherwise occurs in the absence of routine exercise.

And it is important to remember that you do not have to look like a body builder or fitness guru in order to reap the benefits of exercise.

Almost three-quarters of the total benefit to heart, brain and metabolic health that can be gained from exercise will be achieved just by following the guidelines.

William Cornwell does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. As wrestling fans reel from the sudden death of Hulk Hogan, a cardiologist explains how to live long and healthy − and avoid chronic disease – https://theconversation.com/as-wrestling-fans-reel-from-the-sudden-death-of-hulk-hogan-a-cardiologist-explains-how-to-live-long-and-healthy-and-avoid-chronic-disease-262103

Source: ForeignAffairs4

Source: The Conversation – USA (3) – By Jialing Lin, Research fellow in Health Systems, International Centre for Future Health Systems, UNSW Sydney

Vaccination against shingles increased among adults age 50 and older in the U.S. during the COVID-19 pandemic, but not equally across all population groups. That’s the key finding from a new study my colleagues and I published in the journal Vaccine.

Shingles is caused by the reactivation of the varicella-zoster virus, the same virus that causes chickenpox. It leads to a painful rash and potentially serious complications – especially in older adults – such as persistent nerve pain, vision loss and neurological problems. While antiviral treatments can ease symptoms, vaccination is the most effective way to prevent shingles.

We analyzed nationally representative survey data from almost 80,000 adults age 50 and over between 2018 and 2022, collected by the Centers for Disease Control and Prevention to monitor the health of the U.S. population. The survey tracked vaccination rates in people of different ethnic backgrounds as well as other factors such as sex, household income and the presence of chronic conditions like diabetes and cardiovascular disease.

The uptake of shingles vaccines rose notably during the pandemic – from 25.1% of people for whom it is recommended in 2018-2019, to 30.1% during 2020-2022. We observed this overall increase across nearly all groups in our study.

We saw the greatest relative increases among groups that historically have had lower rates of shingles vaccination. These included adults ages 50-64, men, people from racial and ethnic minority groups such as non-Hispanic Black adults, those with lower household incomes, current smokers and people without chronic conditions like cancer or arthritis.

Why it matters

In the U.S., the CDC recommends shingles vaccination for all adults age 50 and older. However, uptake has been low, partly due to limited awareness, cost concerns and missed opportunities during routine health care visits.

The COVID-19 pandemic, while disruptive, may have inadvertently created new opportunities to improve adult vaccination uptake, particularly among groups with historically low uptake of the shingles vaccine. Factors contributing to this shift likely included heightened public awareness of the importance of vaccination, more frequent health care encounters, especially during COVID-19 vaccine rollouts, and the expanded availability of adult vaccines in pharmacies and primary care settings.

Replacing the older, less effective live attenuated zoster vaccine, called Zostavax, with the newer, non-live zoster vaccine, Shingrix, in 2020 also played a role. Public health campaigns that promoted co-administration of vaccines and launched targeted outreach to underserved populations further contributed to these gains.

However, major inequities persist. While shingles vaccination rates improved across the board, groups that had lower uptake before the pandemic continued to lag behind wealthier, non-Hispanic white populations with greater health care access. Overall, the vaccination rate for shingles is still low – below other vaccines such as the flu vaccine.

This gap reflects long-standing disparities in getting needed health care, which became even more prominent during the pandemic. It also highlights the need for fairer policies and customized outreach efforts to underserved communities that build trust and raise awareness about the health benefits of the shingles vaccine.

What still isn’t known

Although the upward trend we observed is encouraging, several questions remain. For example, we could not tell from the survey data we worked with whether participants received both doses of the Shingrix vaccine. Both are needed for full protection against shingles.

Nor could we tell whether participants received the shingles vaccine alongside their COVID-19 vaccination. Receiving multiple vaccines at a single health care visit makes vaccination more convenient and may boost vaccine uptake by reducing the number of needed visits. Also unknown is how immunocompromised people fared during this period. Current guidelines recommend that immunocompromised adults regardless of age also receive the shingles vaccine, but the data only included adults age 50 and over.

Addressing these questions in future studies would help public health experts develop strategies to encourage more eligible people to receive the shingles vaccine.

The Research Brief is a short take on interesting academic work.

Jialing Lin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. Shingles vaccination rates rose during the COVID-19 pandemic, but major gaps remain for underserved groups – https://theconversation.com/shingles-vaccination-rates-rose-during-the-covid-19-pandemic-but-major-gaps-remain-for-underserved-groups-262020

Source: ForeignAffairs4

Source: The Conversation – Africa – By Tinashe Mushakavanhu, Assistant Professor, Harvard University

Driven by a desire to explore Nigeria’s literary and cultural history beyond the metropolis of Lagos, I took a road trip to Ibadan, once the most important university town in the country. Ibadan, in Oyo State, was the first city in Nigeria to have a university set up in 1948.

Ibadan is where the Mbari Club once gathered, an experimental space where Nigerian writers, artists and thinkers – among them Chinua Achebe, Wole Soyinka, JP Clark, Christopher Okigbo, Uche Okeke, Bruce Onobrakpeya, Mabel Segun and South Africa’s Es’kia Mphahlele – met, debated and dreamed in the 1960s and 70s.

It’s the city where celebrated Nigerian artist and architect Demas Nwoko imagined and built his utopias. Where the Oxford University Press and Heinemann Educational Books established their west African headquarters.

Read more:
Chimamanda’s Lagos homecoming wasn’t just a book launch, it was a cultural moment

Books have always been a form of cultural currency in Ibadan. The presence of major publishers meant that bookshops were not just retail outlets, but intellectual salons, sites of encounter and exchange.

So while in Ibadan I visited cultural spaces and independent bookshops but it was the charms of the University campus that mostly captured my imagination. And my favourite place was the University of Ibadan Bookshop. At this campus bookshop I lingered the most, in awe and wonder. Its eclectic range of books, journals, public lecture pamphlets, novels, poetry collections and monographs excited me.

Today, when the global publishing economy has increasingly digitised and centralised, the bookshop feels almost radical just by existing. It’s a reminder that intellectual life in Africa is not peripheral or derived from the west. It is present, prolific and profoundly local. To walk through the shelves of this bookshop was to encounter a history of African thought written and produced on its own terms.

As a scholar of African literature and archives, my research traces the hidden lives of spaces that have shaped publishing and archives. University bookshops have been overlooked but are essential nodes in the continent’s intellectual history.

A snapshot of Nigeria

This campus bookshop gives a snapshot of Nigeria as a print country. Here we witness the nation through its printed matter. A nation of prolific publishing. I found the literary output in the Ibadan campus bookshop not only vast but exuberant and unrelenting. It reflects the texture of the Nigerian personality: loud, boisterous, layered and insistent. Stacks upon stacks of books.

In these stacks, it dawned on me that beneath the surface lies a vibrant, ongoing literary discourse that is unmistakably Nigerian, and sadly not resonant far beyond its borders. These are books you don’t see on reference lists of “popular” and “influential” scholarship that privileges work produced and imported to Africa from the Euro-American academy.

I was especially intrigued with how the Nigerian academic and writer does not tire in producing academic and cultural journals. There are journals for every subject under the sun.

While the critical framework of African literature is too often shaped by the global north (see critiques by Ato Quayson, Biodun Jeyifo, Simon Gikandi and Grace Musila) in Ibadan, I saw a distinctly local and deeply African critical discourse rooted in place, language and lived experience. To walk into the University of Ibadan Bookshop is to step into legacy. Its shelves bear the weight of decades of African thought, theory and storytelling.

Despite being housed in an ageing building, it has stayed defiant. Even though floods destroyed books and computers worth a small fortune in 2019, the bookshop is still standing proudly. And there was pride too among the staff who were eager to help or answer any questions about the books.

More than bookshops

The University of Ibadan bookshop reminded me of the bookshop from my undergraduate days in Zimbabwe. Even though our campus bookshop was much smaller, I used to find pleasure going there in between lectures. It often felt like walking into a vault of African knowledge and memory.

Our bookshop at Midlands State University stocked old, canonical books alongside current literature. On occasion, rare, out-of-print secondhand books would appear on the shelves. The bargain sales also meant I spent most of my money there.

But to call these spaces on African university campuses “bookshops” hardly does them justice. They are hybrid cultural ecosystems that function as part bookshop, part print shop, stationer, library and sometimes even archive. They have long served as vital nodes in the circulation of African knowledge and thought.

Yet this ecosystem is rapidly eroding, undermined by the rise of internet culture, artificial intelligence, piracy and harsh economic conditions. The result is a slow but devastating disappearance of African intellectual memory. As scholars remind us, digital platforms are not neutral. They are structured by algorithms that often marginalise black and African knowledge. So, the loss of these analogue spaces is more than nostalgic, it is epistemic erasure.

In this digital age, there is something vital about the physical presence of bookshops on African campuses. Thanks to them, as a student, for me literature was the serendipity of discovery, the tactile feel of books, the beautiful persistence of a local knowledge system that was relatable and produced by people like me.

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On the way out of the city, we stopped at Bower’s Tower. From there you can see Ibadan’s sprawling layout, the ancient hills from which the settlement was built, and its red roofs.

The view reflected the complexity and density of ideas the city has nurtured. And despite shifts in Nigeria’s publishing geography from here to Lagos and Abuja, Ibadan still matters. It’s a city that remembers, that archives, that holds on to knowledge.

Tinashe Mushakavanhu 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.

– ref. A university bookshop in Ibadan tells the story of Nigeria’s rich publishing culture – https://theconversation.com/a-university-bookshop-in-ibadan-tells-the-story-of-nigerias-rich-publishing-culture-262050

Source: ForeignAffairs4

Source: The Conversation – Africa – By Michael E Odijie, Associate Professor, University of Oxford

When historians and the public think about the end of domestic slavery in west Africa, they often imagine colonial governors issuing decrees and missionaries working to end local traffic in enslaved people.

Two of my recent publications tell another part of the story. I am a historian of west Africa, and over the past five years, I have been researching anti-slavery ideas and networks in the region as part of a wider research project.

My research reveals that colonial administrations continued to allow domestic slavery in practice and that African activists fought this.

In one study I focused on Francis P. Fearon, a trader based in Accra, the Ghanaian capital. He exposed pro-slavery within the colonial government through numerous letters written in the 1890s (when the colony was known as the Gold Coast).

In another study I examined the Lagos Auxiliary, a coalition of lawyers, journalists and clergy in Nigeria. Their campaigning secured the repeal of Nigeria’s notorious Native House Rule Ordinance in 1914. That ordinance had been enacted by the colonial government to maintain local slavery in the Niger Delta region.

Considered together, the two studies demonstrate how local campaigners used letters, print culture, imperial pressure points and personal networks to oppose practices that had kept thousands of Africans in bondage.

The methods Fearon and the Lagos Auxiliary pioneered still matter because they show how marginalised communities can compel power‑holders to close the gap between laws and lived reality. They remind us that well‑documented local testimony, amplified trans-nationally, can still overturn official narratives, compel policy change, and keep institutions honest.

Colonial ‘abolition’ that wasn’t

West Africa was a major source of enslaved people during the transatlantic slave trade. The transatlantic trade was suppressed in the early 19th century, but this did not bring an end to domestic slavery.

One of the principal rationales for colonisation in west Africa was the eradication of domestic slavery.

Accordingly, when the Gold Coast was formally annexed as a British colony in 1874, the imperial government declared slave dealing illegal. And slave-dealing was criminalised across southern Nigeria in 1901. On paper these measures promised freedom, but in practice loopholes empowered slave-holders, chiefs and colonial officials who continued to demand coerced labour.

On the Gold Coast, the 1874 abolition law was never enforced. The British governor informed slave-owners that they might retain enslaved persons provided those individuals did not complain. By 1890, child slavery had become widespread in towns such as Accra. According to the local campaigners, it was even sanctioned by the colonial governor. This led to some Africans uniting to establish a network to oppose it.

The Niger Delta region of Nigeria had a similar experience. The colonial administration enacted the Native House Rule Ordinance to counteract the effects of the Slave-Dealing Proclamation of 1901 which criminalised slave dealing with a penalty of seven years’ imprisonment for offenders. The Native House Rule Ordinance required every African to belong to a “House” under a designated head. It went on to criminalise any person who attempted to leave their “House”. In the Niger Delta kingdoms such as Bonny, Kalabari and Okrika, the word “House” never referred to a single dwelling. Rather, it denoted a self-perpetuating, named corporation of relatives, dependants and slaves under a chief, which owned property and spoke with one voice. By the 1900s, “Houses” had become the primary units through which slave ownership was organised.

Therefore, the Native House Rule Ordinance compelled enslaved people in Houses to remain with their masters. The masters were empowered to use colonial authority to discipline them. District commissioners executed arrest warrants against runaways. In exchange, the House heads and local chiefs supplied the colonial administration with unpaid labour for public works.

African campaigners in Accra and Lagos organised to challenge what they perceived as the British colonial state’s support for slavery.

Fearon: an undercover abolitionist in Accra

Francis Fearon was an educated African, active in the Accra scene during the second half of the 19th century. He was highly literate and part of elite circles. He was closely associated with the journalist Edmund Bannerman. He regularly wrote to local newspapers, often expressing concerns about racism against Black people and moral decay.

On 24 June 1890, Fearon sent a 63-page letter, with ten appendices, to the Aborigines’ Protection Society in London. That dossier would form the basis of several further communications. He alleged that child trafficking continued.

As evidence, he transcribed the confidential court register of Accra and claimed that Governor W. B. Griffith had instructed convicted slave-owners to recover their “property”.

Fearon’s tactics were audacious. He remained anonymous, relied on court clerks for documents, and supplied the Aborigines’ Protection Society with evidence. He pleaded with the society to investigate the colonial administration in the Gold Coast.

Although the society publicised the scandal, subsequent narratives quietly effaced the African source.

Lagos elites organise – and name the problem

Like Fearon, Nigerian campaigners also wrote to the Anti-Slavery and Aborigines’ Protection Society. They denounced the colonial government in Nigeria for promoting slavery, but they did not remain anonymous.

By this time, the Native House Rule Ordinance had prompted some enslaved people to flee the districts in which it was enforced. They sought refuge in Lagos. Through these arrivals, Lagosian elites learned of the ordinance. They unleashed a vigorous campaign against the colonial state.

The principal figures in this movement included Christopher Sapara Williams, a barrister, and James Bright Davies, editor of The Nigerian Times. Others included politician Herbert Macaulay, Herbert Pearse, a prominent merchant, Bishop James Johnson and the Reverend Mojola Agbebi. Unlike Fearon’s lone-wolf strategy, they mounted a coordinated assault on the colonial administration. They drafted petitions, briefed sympathetic European organisations, and inundated local newspapers with commentary.

Their arguments blended humanitarian indignation with constitutional acumen. They insisted that the ordinance contravened both British liberal ideals and African custom.

After years of pressure the law was amended and then quietly repealed in 1914.

Why these stories matter now

Contemporary scholarship on abolition is gradually shifting from asking “what Britain did for Africa” to examining the role Africans played in ending slavery.

Many African abolitionists who fought and lost their lives in the struggle against slavery have long gone unacknowledged. This is beginning to change.

The two articles discussed here highlight the creativity of Africans who, decades before radio or civil-rights NGOs, used transatlantic information circuits. They exposed colonial governments that continued to rely on forced-labour economies long after slavery was supposed to have ended.

They remind us that grassroots documentation can overturn official narratives. Evidence-based advocacy, coalition-building, and the strategic use of global media remain potent instruments.

Research for these articles was funded by the European Research Council under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 885418).

– ref. The African activists who challenged colonial-era slavery in Lagos and the Gold Coast – https://theconversation.com/the-african-activists-who-challenged-colonial-era-slavery-in-lagos-and-the-gold-coast-261089

Source: ForeignAffairs4

Source: The Conversation – Africa – By Habib Noorbhai, Professor (Health & Sports Science), University of Johannesburg

If you were to walk through the corridors of some of the world’s leading cricket schools, you might hear the crack of leather on willow long before the bell for the end of the day rings.

Across the cricketing world, elite schools have served as key feeder systems to national teams for decades. They provide young players with superior training facilities, high-level coaching and competitive playing opportunities.

This tradition has served as cricket’s most dependable talent pipeline. But is it a strength or a symptom of exclusion?

My recent study examined the school backgrounds of 1,080 elite men’s cricketers across eight countries over a 30-year period. It uncovered telling patterns.

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Top elite cricket countries such as South Africa, England and Australia continue to draw heavily from private education systems. In these nations, cricket success seems almost tied to one’s school uniform.

I argue that if cricket boards want to promote equity and competitiveness, they will need to broaden the talent search by investing in grassroots cricket infrastructure in under-resourced areas.

For cricket to be a sport that anyone with talent can succeed in, there will need to be more school leagues and entry-level tournaments as well as targeted investment in community-based hubs and non-elite school zones.

Findings

South Africa is a case in point. My previous study in 2020 outlined that more than half of its national players at One-Day International (ODI) World Cups came from boys-only schools (mostly private).

These schools are often well-resourced, with turf wickets, expert coaches and an embedded culture of competition. Unsurprisingly, the same schools tend to produce a high number of national team batters, as they offer longer game formats and better playing surfaces. Cricket’s colonial origins have influenced the structure and culture of school cricket being tied to a form of privilege.

Read more:
Elite boys’ schools still shape South Africa’s national cricket team

In Australia and England, the story is not very different. Despite their efforts to diversify player sourcing, private schools still dominate. Even in cricketing nations that celebrate working-class grit, such as Australia, private school players continue to shape elite squads.

The statistics say as much; for example: about 44% of Australian Ashes test series players since 2010 attended private schools, and for England, the figure is 45%. That’s not grassroots, it could be regarded as gated turf…

Yet not all countries follow this route. The West Indies, Pakistan and Sri Lanka reflect very different models. Club cricket, informal play and community academies provide their players with opportunities to rise. These countries have lower reliance on private schools. Some of their finest players emerged from modest public schooling or neighbourhood cricketing networks.

India provides an interesting hybrid. Although elite schools such as St. Xavier’s and Modern School contribute players, most national stars emerge from public institutions or small-town academies. The explosion of the Indian Premier League since 2008 has also democratised access, pulling in talent from previously overlooked and underdeveloped cities.

In these regions, scouting is based on potential, not privilege.

So why does this matter?

At first glance, elite schools producing elite cricketers might appear logical. These institutions have the resources to nurture talent. But scratch beneath the surface and troubling questions appear.

Are national teams truly reflecting their countries? Or are they simply echo chambers of social advantage?

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In South Africa, almost every Black African cricketer to represent the country has come through a private school (often on scholarship). That suggests that talent without access remains potentially invisible. It also places unfair pressure on the few who make it through, as if they carry the hopes of entire communities.

I found that in England, some county systems have started integrating players from state schools, but progress is slow. In New Zealand, where cricket is less centralised around private institutions, regional hubs and public schools have had more success in spreading opportunities. However, even there, Māori and Pasifika players remain underrepresented in elite squads.

Four steps that can be taken

1. One solution lies in recognising that schools don’t have a monopoly on talent. Cricket boards must increase investment in grassroots infrastructure, particularly in under-resourced areas. Setting up community hubs, supporting school-club partnerships and more regional competitions could discover hidden talent.

2. Another step is to improve the visibility and reach of scouting networks. Too often, selection favours players from known institutions. By diversifying trial formats and leveraging technology (such as video submissions or performance-tracking apps), selectors can widen their net. It’s already happening in India, where IPL scouts visit the most unlikely of places.

3. Coaching is another stumbling block. In many countries, high-level coaches are clustered in elite schools. National boards should consider optimising salaries as well as rotating certified coaches into public schools and regional academies. They should also ensure coaches are developed to be equipped to work with diverse learners and conditions.

4. Technology offers other exciting possibilities too. Virtual simulations, motion tracking and AI-assisted video reviews are now common in high-performance centres. Making simplified versions available to lower-income schools could level the playing field. Imagine a township bowler in South Africa learning to analyse their technique using only a smartphone and a free app?

Fairness in sport

The conversation about schools and cricket is not just about numbers or stats. It is about fairness. Sport should be the great leveller, not another mechanism of exclusion. If cricket is to thrive, it needs to look beyond scoreboards and trophies. It must ask who gets to play and who never gets seen?

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A batter from a village school in India, a wicket-keeper from a government school in Sri Lanka or a fast bowler in a South African township; each deserves the chance to be part of the national story. Cricket boards, policymakers and educators must work together to make that possible.

The game will only grow when it welcomes players from all walks of life. That requires more than scholarships. It requires a reset of how we think about talent. Because the next cricket superstar may not wear a crest on their blazer. They may wear resilience on their sleeve.

Habib Noorbhai 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.

– ref. Cricket’s great global divide: elite schools still shape the sport – https://theconversation.com/crickets-great-global-divide-elite-schools-still-shape-the-sport-261709