How to empower teachers and help students prepare for a sustainable future

Source: The Conversation – UK – By Nicola Walshe, Professor of Education, UCL

WorldStockStudio/Shutterstock

Education about climate change and sustainability is a vital part of responding to a rapidly changing world, including the negative effects of climate change, biodiversity loss and pollution.

Teachers, including in Brazil and England, help young people live with futures shaped by local and global environmental challenges. However, despite expressing overwhelming concern about issues related to climate change and sustainability, many teachers do not feel equipped to teach it in schools.

Urgent action from policymakers is needed to support them.

Teachers shape how young people understand and respond to environmental crises. Without proper support, students risk leaving school unprepared for some of the most urgent challenges of our time: this is a societal risk, not just an educational issue.

Despite public demand for action in response to climate change, schools often lack the expertise and resources to realise this. Empowering teachers means building stronger communities: when well-equipped teachers foster agency and action, not just knowledge and skills.

Young people can bring ideas home, influence families and drive local change. So climate change and sustainability education becomes a catalyst for resilience and transformation, essential for preparing the next generation to thrive in a rapidly changing world.

Leaders from across the world are coming together in Brazil to discuss progress and negotiate actions in response to climate change as part of an annual UN climate summit (Cop30). This provides a vital opportunity to underline for global leaders the support that teachers and schools need.

Over the last few years, we have worked with hundreds of teachers in both England and Brazil to explore their experiences of teaching climate change and sustainability. Teachers have shared with us the barriers they experience related to climate change and sustainability education and the support they need to overcome them. While there is diversity in terms of geographical context, there are many commonalities.

Barriers

Education systems which have a rigid national curriculum with an emphasis on high-stakes examinations create barriers for teachers in both England and Brazil. Existing systems require teachers to prioritise examination content which frequently has limited focus on climate change and sustainability topics.

Teachers in both countries reported challenges in teaching climate change and sustainability in ways that underlined the real-world relevance to the lives of the young people they teach.

Another limitation is the lack of opportunities for professional learning that support teachers in integrating climate change and sustainability into their teaching. This gap exists throughout their careers, such that they frequently share they have insufficient or insecure knowledge and understanding of climate change and sustainability issues. This lowers teachers’ confidence and limits their classroom practices.

Brazilian school children in white T shirts sat at desks looking at teacher
Teachers in Brazil and England face similar limitations when it comes to delivering climate change education.
J.P. Junior Pereira/Shutterstock

Boosts

Governments can better support teachers by ensuring that climate change and sustainability is explicitly recognised and valued in local, regional and national policies that govern schools. This could include national curricula, professional standards for teachers and school leaders and school-inspection frameworks.

Teachers in both England and Brazil recognise how important it is to have school leaders who value climate change and sustainability and how – when school leaders provide a culture of support across the school community – this is transformational for climate change and sustainability education.

All teachers can benefit from high-quality professional learning focused on climate change and sustainability education from the beginning of their careers and throughout their professional lives. When teachers have the time and support to co-design learning – with each other and with their students – which draws on different ways of understanding climate change and sustainability issues, this builds teacher confidence and provides richer learning experiences for children and young people.




Read more:
Three ways for schools to make climate education inclusive for all children


Climate change and sustainability education is essential for preparing young people to navigate and shape a rapidly changing world, but teachers cannot carry this responsibility alone.

By embedding climate change and sustainability in curricula and supporting career-long professional learning for teachers, classrooms can be transformed into sites of agency and local action. This can amplify young people’s influence in their communities and reduce a wider societal risk of leaving a generation unprepared.

Cop30 offers a timely moment for leaders to commit to support for teachers so that policy matches public concern and evidence-based practice translates into real-world resilience.


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Nicola Walshe acknowledges the significant input of our co-researcher Lizzie Rushton, Danielle Aparecida Reis Leite for her support with the in-person workshop in Brazil, and the contribution of colleagues based at the UCL Centre for Climate Change and Sustainability Education in the creation and implementation of the Teacher survey. Thanks also go to the teachers in England and Brazil who contributed to the research. This work was supported by funding from UCL Institute of Education’s Strategic Investment Board.

Denise Quiroz Martinez and Luciano Fernandes Silva 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. How to empower teachers and help students prepare for a sustainable future – https://theconversation.com/how-to-empower-teachers-and-help-students-prepare-for-a-sustainable-future-268689

Horses at 50: three reasons why Patti Smith still cuts to the bone

Source: The Conversation – UK – By Ryann Donnelly, Assistant Professor in Art History, School of Media, Arts and Humanities, University of Sussex

Today is the 50th anniversary of Patti Smith’s album, Horses. I feel honoured to reflect on this work, but also a tremendous amount of pressure to capture what it is for the people who love it, and – perhaps even more so – for those who are not yet familiar with Smith’s music.

I desperately want to convince you to listen to this album and to see her perform, as if your life depends on it. I want you to tremble under her spell. I recognise this aim suggests a certain level of bias, but I actually don’t consider myself a “super-fan”.

I have seen Smith several times across a significant amount of time, which should allow me to offer some insights about her work. I first saw her perform in 2000, when I was 14 years old. I saw her again on New Year’s Eve in 2011 at the Bowery Ballroom in NYC, and in London in 2015 and 2018. I’ve read her first memoir, Just Kids (her third, Bread of Angels is published this week). But I can’t recount her life story. I just think she’s cool as hell.

I clarify the particular angles of my vantage point to emphasise that the urgency and embrace I’m encouraging here, and indeed the transformation I’m just shy of promising, still feels quite measured. As someone who examines queer and feminist performance for a living, I’ve given it some thought: Patti Smith still cuts to the bone.

This is for a variety of reasons, but in my campaign to compel a new audience to her and perhaps galvanise some shared feelings among her existing appreciators, I’ll elaborate on three.

1. A sense of magic and incantation

Seriously: magic and incantation. I have a friend who immediately chants: “Horses! Horses!” whenever actual horses come up in conversation, regardless of context. The delivery is reminiscent of Smith’s on what I consider to be the title track of Horses (the actual title is the poetic, if longwinded: Land: Horses/Land of a Thousand Dances/La Mer[de]).

The song physically moves me. I nod my head and lift my heel, then drop it on the down beat and it feels good. I’m in it. It’s in me.
These are the aftershocks of possession. These songs have been put in us, along with a heat – I think the literal friction of joy and pleasure being stirred in us as we listen or recite.

What I’m describing relies on Smith’s singular way of building a sonic momentum. The rhythm, dynamics and crooked jangly tones of the guitar at times seem to competitively race the drums.

On Birdland, this black magic swells through pounding eighth notes on a slightly out-of-tune piano that collide with waves and washes of distorted guitar as Smith seems to chase words out of her mouth – poetry that rattles out breathlessly like a cautionary sermon: “White lids, white opals, seeing everything just a little bit too clearly. And he looked around and there was no black ship in sight. No black funeral cars, nothing except him the raven.”

I will acknowledge here her long-time guitarist and co-writer, Lenny Kaye, drummer Jay Dee Daugherty, Horses bassist Ivan Král, and the album’s producer, John Cale – formerly of the Velvet Underground. But the brutal thrash of affect comes directly from Smith, and is more potent live than you could ever imagine from listening to the records alone.

I have been so overwhelmed by her spasm, the vibration of her bones, I worried her heart would explode. Through lyrical and rhythmic incantation, her music produces a trance, and she gets there, with you. This feels most dangerous and is most totally levelling when she performs Gloria: In Excelsis Duo.

It is an adaptation of Van Morrison’s Gloria, her best-known song next to her Bruce Springsteen collaboration, Because the Night, and one I couldn’t get past when I first heard Horses 26 years ago. I just kept playing it over and over and over. I still can’t listen to it just once. This song leads me to my second point though – the second reason Horses is so raw and compelling.

2. Sexuality and sensuality

It’s all over. It’s prismatic. It’s her cool masculine dress – her blazers paired with collared shirts or ripped cotton Ts – and her wiry, slinky form. It’s in the enveloping reggae sway of Redondo Beach. It’s the nakedness and aesthetics of her lyrics. It’s in the words – the story – but it’s in the horny, desperate, silky sounds she makes too, and how she signals sex with lewd, obvious motions.

In Gloria, she grunts, hisses, and does these snarling, vocal flips that play at the edges of the ecstatic with a delicate control, before she eventually just completely loses it as she describes the character of Gloria getting physically closer, walking toward the male character whom Smith has occupied, and psychically penetrated and exposed.

As she spells out Gloria’s name, she leans in gutturally to the “O” with an “Ohhhhh” and reduces the “R” to an “Ahhhhh”, slowing everything down to the vowels of sexual moaning, before speeding right back up, repeating in a raging, choral freakout: G-L-O-R-I-A!

3. Showing up

My final point is based on something Smith wailed the first time I saw her. She was getting totally worked up, shaking, freaking out, and started intoning: “I forget the words! I forget the words!”. She seemed totally lost and upset, grumbling in non-word noise for a bit before something emerged: “You better… you better… you better take care of your teeth for when the revolution comes!”

I was absolutely certain that she was having a psychotic episode. But, she said it again when I saw her in 2018, and when asked in a recent TV interview if she had any advice for young people, she repeated: “Take care of your teeth” (along with the self-deprecating: “Don’t listen to me”).

I think she does mean this literally, but also that you have to keep showing up: taking care of yourself, and contributing in small or even mundane ways to bigger things – stay creative, keep making art.

Smith has continued to write music, books and poetry, and tour and perform with the same shocking level of intensity past the peak of her commercial success. She has also continued to collaborate and engage with contemporary music. When I first saw her in 2000 a still-emerging version of the now legendary feminist punk band, Sleater Kinney opened her show, and Smith covered Heart Shaped Box by Nirvana.

Just this week, Rosalía, one of the biggest contemporary pop acts, included a clip of Smith from an interview in 1976 on her new song, La Yugular. Smith speaks about “breaking through” doors, and into levels of heaven, but says you have to keep breaking through: “One door isn’t enough. A million doors aren’t enough.”

This is the spirit that runs through Horses, through Patti Smith’s entire oeuvre, and has made her a lasting, powerful presence.


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This article features references to books that have been included for editorial reasons, and may contain links to bookshop.org. If you click on one of the links and go on to buy something, The Conversation UK may earn a commission.

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Ryann Donnelly 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. Horses at 50: three reasons why Patti Smith still cuts to the bone – https://theconversation.com/horses-at-50-three-reasons-why-patti-smith-still-cuts-to-the-bone-269418

How Stephen King’s Bachman stories are fuelling 2025’s dark cinematic moments

Source: The Conversation – UK – By Harriet Earle, Senior Lecturer in English and Creative Writing, Sheffield Hallam University

It has been a major year for Stephen King films. Four of his stories have hit cinemas in 2025: The Monkey, The Life of Chuck, The Long Walk and The Running Man. And two more have graced the small screen – The Institute and the Pennywise origin series It: Welcome to Derry.

Indeed, there was a moment in British cinemas earlier in the year, where you could watch The Life of Chuck and have the film preceded by trailers for the other three cinematic adaptations, making King’s work feel ubiquitous right now.

Both The Long Walk and The Running Man were originally written by King under his pseudonym Richard Bachman – a name he used to try out dark stories that leaned more towards speculative fiction. In his 1982 novella, The Running Man, Ben Richards (Glen Powell) takes part in a reality show that will earn him $1 billion (£750 million), provided he survives 30 days. No one ever has, but Richards’ daughter is gravely ill and his wife has turned to sex work to earn money to try to pay for her treatment.

Apt for its current adaptation, the novella takes place in an alternate 2025 and speaks of a future we recognise from other dystopias. A previous adaptation was released in 1987, starring Arnold Schwarzenegger. But as critics noted at the time, fidelity to the source material ended with the title. The 80s version was a glitzy action romp complete with gold spandex, but the book is far darker. In our current era of reality television and grasping fame, it has new things to say.

The trailer for The Running Man.

The new adaptation arrives against a backdrop of similar stories, such as the massively popular Netflix drama, Squid Game (2021-2025) and the Hunger Games franchise (2012-present). There have also been similar reality TV shows such as Squid Game: The Challenge (2023-2025), Take the Money and Run (2011), and Hunted (2015-present).

The Running Man ties into a popular survival sub-genre, that can be traced back to films such as The Most Dangerous Game (1936). Literary theorist Terry Thompson describes these films as having not only a Darwinian “survival of the fittest” quality, but also “an exotic setting, stereotypical characters, melodramatic acting, and a preposterous plotline”.

The Bachman books

There are seven books by King’s alter-ego, Richard Bachman. King reportedly came up with the pseudonym because the publishing industry at the time had an unspoken rule about releasing one book per year. He also had a desire to test his fame, and see whether books under a different name would sell as well.

In general, the Bachman books are bleaker than King’s other works. Rage, first published in 1977, concerns a violent and disaffected young man who commits a school shooting in response to his expulsion. Following a rash of similar shootings and, more importantly, copies of Rage being found among a perpetrators’ belongings, King asked his publisher to withdraw it from print.

The third Bachman Book is The Long Walk. It was published in 1978, and adapted into a film this year by Francis Lawrence, who has directed all of the Hunger Games sequels and prequels. Published in the immediate aftermath of the Vietnam war, the novella follows an annual event where young men compete in a harrowing contest – a walk that lasts until only one remains. Anyone who stops walking is killed.




Read more:
The Long Walk: a brutal, brilliant film about suffering in the name of patriotism


It’s dystopian, violent, televised pseudo-entertainment, which contestants see as the only way to guarantee a decent quality of life. This feels like a heavy handed metaphor for the late 1970s when readers were exposed to the nightly televised horrors of the war in Vietnam.

Moreover, it speak to the current political moment, where exploiting oneself for entertainment purposes is seen as a viable (if not desirable) career choice and while huge numbers of people are barely subsisting. King was likely influenced by the 1969 adaptation of Horace McCoy’s novel They Shoot Horses Don’t They? about a lethal dancing competition to be won by the last woman standing.

It remains to be seen if Edgar Wright’s version of The Running Man will hold close to the original, dark novel or whether some glimmers of Arnie’s spandex will creep in – the trailer suggests it’s closer to the former.

The trailer for The Long Walk.

The publication of The Running Man and The Long Walk were contemporaneous with the birth of predatory Capitalism, in which company profits are maximised by any means permissible within a society’s ethical norms, leading to Reaganomics in the 1980s.

This, combined with post-Vietnam atrocities taking place in the US itself, created the environment for King’s books. He combines satire and science fiction to criticise capitalism – showing TV shows where people compete for money even at the cost of humiliation or violence, and societies where people will kill innocents simply because they are told to.

In the present day, with troops in the US occupying cities due to Trumped-up myths about civil disobedience, and game shows inspired by dystopian fiction where contestants are allegedly getting “hypothermia and nerve damage”, these scenarios seem very relevant again.

There have been 57 adaptations of King’s work over the past 40 years, so he’s obviously a reasonable guarantee of healthy profits. And, It: Welcome to Derry even seems to suggest the birth of a King Cinematic Universe, with a character from The Shining also appearing in the series.

While The Running Man and The Long Walk are game show dystopias, this year’s other two King films mix cursed prophecy (predictions of inevitable character deaths to come) and visions of the apocalypse. Squint, and you could make a connection with the terrors facing humanity in general, such as climate change and the resurrection of potential nuclear conflict. However The Monkey treats the apocalypse as black comedy and The Life of Chuck’s world-ending vision (spoiler alert) turns out to be the sleeping fantasy of a dying man, in a film otherwise about the goodness and charm of mankind.

So, in a year that is the second most populous for King’s works on screen (only exceeded in 2017), there’s still something notable about his work. These adaptations hold a mirror up to society’s problems and treat them with horror and disdain. And since a number of these films show resistance to malevolent forces, perhaps they still offer hope for the future.


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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. How Stephen King’s Bachman stories are fuelling 2025’s dark cinematic moments – https://theconversation.com/how-stephen-kings-bachman-stories-are-fuelling-2025s-dark-cinematic-moments-269244

Should you worry about melatonin and heart failure? The evidence isn’t clear

Source: The Conversation – UK – By Heba Ghazal, Senior Lecturer, Pharmacy, Kingston University

photo gonzo/Shutterstock.com

A study presented at the American Heart Association’s scientific meetings has raised concerns about melatonin, one of Britain’s most commonly prescribed sleep aids. The findings suggest that long-term users face a higher risk of heart failure. But the preliminary data demands careful scrutiny before the alarm is sounded.

Melatonin has been prescribed in the UK for nearly two decades, with 2.5 million prescriptions issued in England last year alone. The drug is a synthetic version of the hormone naturally produced in the brain – the so-called “hormone of darkness” that regulates our sleep–wake cycle.

For years, it’s been considered safe for treating short-term sleep problems in adults and, under specialist supervision, for children with learning disabilities or ADHD.

The study, published only as a brief summary, analysed electronic health records of roughly 130,000 adults with sleep difficulties over five years – half of whom took melatonin and half of whom didn’t.

People who took melatonin for at least a year were roughly three times more likely to be hospitalised with heart failure than non-users (19% of people who took melatonin versus 6.6% of people who did not). Long-term users also faced higher rates of heart failure diagnosis and death from any cause.

The researchers attempted to balance their comparison by matching melatonin users with non-users across 40 factors, including age, health conditions and medications. Yet the study found only an association, not causation. This distinction matters. Correlation doesn’t prove that melatonin caused heart failure.

The devil, as ever, lives in the missing details. Only a 300-word summary of the study exists so far, meaning crucial information – melatonin dosage, insomnia severity, lifestyle factors – remains unreported.

The study’s methodology raises questions. It relied on electronic medical records rather than direct patient follow-up or interviews, which can leave gaps in the data. The research drew from TriNetX Global Research Network, a large international database. But healthcare practices and record-keeping vary wildly between hospitals and nations, potentially skewing results.

In the UK, melatonin requires a prescription for specific conditions. But in the US, it’s sold over the counter – purchases that are often not documented in medical records. This means some people categorised as non-users may actually have been taking melatonin, muddying the comparison.

The missing piece of the puzzle

Even assuming both groups were correctly identified and matched, a key question lingers: why did one group receive melatonin while the other didn’t? Perhaps those prescribed the drug suffered more severe or disruptive sleep problems – symptoms that might reflect underlying health issues, including heart problems. If so, melatonin might simply be a marker of existing risk rather than the cause of it.

Intriguingly, previous studies in heart failure patients suggested melatonin may actually protect heart health by improving psychological wellbeing and heart function. Other research indicated it could ease symptoms in people with heart failure and serve as a safe complementary therapy.

Since the study exists only as an abstract, it hasn’t undergone peer review. And information on the study’s methods and results remains limited. While the findings are noteworthy and raise legitimate questions about the long-term risks of using this supplement, they’re far from conclusive. Further studies are needed to determine whether prolonged melatonin use affects heart health, and if so, how.

Doctors face a familiar balancing act: weighing treatment benefits against potential risks. Poor sleep doesn’t just affect the heart; it’s linked to problems with metabolism, mental health and the immune system, among others.

Doctors typically start with lifestyle changes, better sleep habits and talk therapy. But when these fail to improve sleep quality, short-term medication may be necessary to restore healthy patterns and prevent further health complications.

The melatonin story isn’t over. It’s just beginning. Until fuller evidence emerges, panic seems premature.

The Conversation

Heba Ghazal 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. Should you worry about melatonin and heart failure? The evidence isn’t clear – https://theconversation.com/should-you-worry-about-melatonin-and-heart-failure-the-evidence-isnt-clear-269131

Pollution, poverty and power: the real cost of environmental inequality in the UK

Source: The Conversation – UK – By Gabrielle Samuel, Lecturer in Environmental Justice and Health, Department of Global Health and Social Medicine, King’s College London

Riccardo Mayer/Shutterstock

Environmental deaths in the UK are primarily attributed to air pollution, which the Royal College of Physicians estimates contributed to around 30,000 deaths in 2025, costing the economy billions each year. Other environmental risks include climate-related events such as extreme heat, which could cause tens of thousands of deaths annually, and pollutants from diesel emissions or home wood-burning stoves.

But environmental harm does not fall evenly. It is shaped by race and social class. The unequal distribution of risk and damage, known as environmental racism, is systemic, not accidental. It is the product of decades of inequity and political neglect.

In many countries, marginalised communities are more likely to live with polluted air, unsafe water and toxic land. In England, for example, data shows people from ethnic minority backgrounds are around three times more likely than white people to live in neighbourhoods with high air pollution.

A joint Greenpeace UK and Runnymede Trust report found that communities of colour are disproportionately affected by waste incinerators, poor housing quality and limited access to green space.

Environmental racism shows up in decisions about where factories are built, whose neighbourhoods get green spaces, whose water systems are upgraded, and who lives next to landfills, toxic waste facilities or heavy-polluting industries. Put bluntly, some communities are forced to carry the weight of environmental damage so others do not have to.

The term gained prominence in the US in the late 20th century when low-income communities of colour mobilised around anti-waste and anti-dumping campaigns. The 1987 toxic wastes and race report by the United Church of Christ showed that hazardous waste facilities were overwhelmingly located in minority and low-income areas.

It helped launch the modern environmental justice movement, which crystallised in 1991 at the first National People of Colour Environmental Leadership Summit, where delegates drafted the seventeen principles of environmental justice.

Since then, evidence of environmental racism has been documented worldwide — from the siting of polluting industries and the dumping of waste in the global south to unequal access to renewable energy and the health impacts of climate change itself.

Where we live is one of the strongest predictors of our health. When environments are unsafe, polluted or neglected, the consequences are devastating. The World Health Organization estimates that environmental factors contribute to nearly one-quarter of all deaths worldwide and almost 20% of cancers. Living with constant exposure to hazards also takes a toll on mental health, fuelling stress, anxiety and despair.

In the UK, air pollution remains the single biggest environmental threat to health. It is linked to asthma, heart disease and respiratory illness.

Yet exposure is not equally distributed. Local emissions from transport, heating and industry are higher on average in more deprived areas. A 2024 study also showed that, even after accounting for deprivation, minoritised ethnic groups in England remain exposed to higher levels of harmful emissions.

These environmental burdens do not just damage lungs; they affect livelihoods. Poor health means missed work or school, deepening financial and educational struggles. Families who want to move to safer areas often cannot afford to, trapping communities in a cycle of disadvantage.

There are, however, signs of progress. Recent data show that ethnic minorities’ exposure to air pollution in England fell from 13% above the national average in 2003 to 6% in 2023.

This narrowing reflects two decades of cleaner-air policies: low-emission zones, stricter vehicle standards and tighter industrial regulation. Yet it also reflects residential shifts, as some families move away from heavily polluted urban centres, rather than the full dismantling of structural inequalities.

So while the trend is encouraging, it does not mean environmental racism has been solved. As the Race Equality Foundation warns, the UK still lacks a coordinated strategy that explicitly addresses race and class disparities in environmental exposure, community consultation and land-use decision-making.

Polluted air, toxic stress and systemic neglect become embodied as disease — quite literally getting “under the skin”, as public health scholar Nancy Krieger puts it. The damage accumulates across lifetimes and generations.




Read more:
Who controls the air we breathe at home? Awaab’s law and the limits of individual actions


Environmental racism is not just an environmental issue. It is a health issue, a justice issue and a life-or-death issue. That reality places a moral obligation on governments, institutions and industries to act.

But history shows that change rarely comes easily. Too often, action only follows public outrage, and solutions are framed as technical fixes — treating the symptoms rather than the causes. Those causes are about power: who holds it, who benefits from it, and who is left to suffer its consequences.

Dismantling environmental racism requires more than installing air filters or building treatment plants. It demands a reckoning with history and a redistribution of power – giving the communities most affected a real seat at the table when decisions are made. Only then can we begin to talk about health for all.

The Conversation

Gabrielle Samuel 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. Pollution, poverty and power: the real cost of environmental inequality in the UK – https://theconversation.com/pollution-poverty-and-power-the-real-cost-of-environmental-inequality-in-the-uk-263936

How Trump’s trade policies are weakening international climate commitments

Source: The Conversation – UK – By Maha Rafi Atal, Adam Smith Senior Lecturer in Political Economy, School of Social and Political Sciences, University of Glasgow

Benjamin Doyle

The Cop30 climate summit is under way in Brazil under the shadow of US president Donald Trump’s second term. Delegates from around the world have poured into the Amazonian port of Belém for the conference, which promises to focus on economic development and the fight against global poverty, as well as green tech and finance.

For the first time in three decades of the talks, there are no high-level US officials expected at Cop30. Since taking office in January, the Trump administration has withdrawn the United States from the Paris climate agreement, dismantled key environmental regulations, and scrapped Biden-era tax credits which were designed to promote wind and solar power.

And now Trump’s aggressive tariff policy is rippling through the global economy, forcing countries to rethink how they balance trade and climate commitments.

For the UK, the consequences are particularly acute. Post-Brexit, Britain must maintain close regulatory alignment with the European Union on many goods. This effectively means that despite having quit the EU, the UK voluntarily follows its single market rules in some sectors in order to minimise trade friction.

For its part, the bloc has made compliance with European environmental standards a requirement for firms in key sectors looking to export into the EU market. Under this regulation, a foreign company selling products to European consumers must report on the carbon footprint of their factories overseas. Companies are fined per unit of carbon emitted before the product gets to the EU.

To be exempt, companies will have to show that the foreign countries where the good was produced impose an equivalent type of carbon regulation to that in EU law.

These “carbon border” mechanisms are vital for cutting emissions in a globalised economy. The UK has committed to introducing a similar measure to some of the most polluting sectors (such as steel, aluminium, cement and fertiliser) in 2027.

At the same time, the UK government hopes that closer trade with the United States will drive economic growth. But the Trump administration is pressuring its European partners to relax environmental standards, or exempt US companies from complying with them, in exchange for tariff relief. This could leave the UK caught between its two most important allies.

Race to the bottom

The ripple effects extend far beyond Europe. With the carbon border increasing the cost of exports to the EU and Trump’s tariffs doing the same for access to US markets, many countries are seeking new trading routes.

This creates openings for major carbon emitters such as China, Russia and the Gulf states to expand their influence through deals with developing nations that are unable to pay the premium for entry into US or European markets.

The result could be the creation of “sacrifice zones” – regions that become dumping grounds for high-emission products such as electronics or vehicles made with steel or aluminium produced using cheaper, less sustainable production methods. This both damages local environments and deepens global inequality in the transition to a more sustainable economy.

Trump warned delegates at the UN General Assembly in September that what he termed the ‘green scam’ would lead their contries to fail.

Meanwhile, tariffs are expected to slow down global economic growth. Businesses are diverting funds from investment and job creation to cover the extra cost of trade barriers – potentially wiping US$2 trillion (£1.5 trillion) off world GDP over the next two years.

That shortfall could have serious implications for Cop30, where rich countries will be asked to increase financial support for poorer nations so that they can build renewable energy systems and recover from climate-related disasters such as floods and wildfires.

Amid all the uncertainty that Trump is creating with his impulsive and inconsistent approach to trade, governments may feel that they cannot afford to make these commitments right now. But the planet cannot afford for them to wait.


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Maha Rafi Atal 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. How Trump’s trade policies are weakening international climate commitments – https://theconversation.com/how-trumps-trade-policies-are-weakening-international-climate-commitments-269409

Will China win the AI race?

Source: The Conversation – UK – By Greg Slabaugh, Professor of Computer Vision and AI, Director of the Digital Environment Research Unit, Queen Mary University of London

“China is going to win the AI race,” Nvidia CEO Jensen Huang has told an AI summit in London. The Taiwanese-born boss of the chipmaker, the world’s most valuable public company, believes the Chinese are already just “nanoseconds” behind the Americans and well placed to overtake them.

He pointed to China’s energy superiority and AI research talent, as well as the risk that the Trump administration’s ban on selling China the most advanced chips will just galvanise Beijing to close that technological gap.

Huang did soften his stance later to say American could still win the race, but he has raised potentially existential questions about the road ahead. We asked two experts whether China is likely to prevail.

Yes

Greg Slabaugh, Professor of Computer Vision and AI, Queen Mary University of London

Artificial intelligence has always been an international enterprise: papers, open-source models and datasets often move freely, and breakthroughs emerge from collaborations across borders. Yet in several domains, China’s research dominance is already clear.

Take computer vision, the field that enables machines to interpret and reason about visual data. It underpins everything from autonomous vehicles and robotics to medical imaging and surveillance.

Held in October in Hawaii, the 2025 International Conference on Computer Vision (ICCV) is one of the world’s most prestigious and competitive computer vision venues. Of the research papers presented, half of all authors were affiliated with Chinese institutions, far ahead of the second-placed US, which had 17% of papers. If Chinese nationals working abroad were included, the gap would be even wider.

Based on this admittedly simplistic metric, China has already won. It led the world in the volume and visibility of cutting-edge computer vision research at the conference, shaping the agenda in one of AI’s most dynamic areas.

This strength stems from long-term strategic planning. In 2017, Beijing launched its new generation artificial intelligence development plan, a national strategy to make China the world leader in AI by 2030. That ambition has been backed by enormous state-guided investment.

China’s recently launched National Venture Capital Guidance Fund, worth around US$138 billion (£105 billion), now channels capital into strategic “hard tech” sectors such as AI, semiconductors and quantum computing.

Provincial governments and state-owned enterprises operate numerous additional funds that co-invest with private firms. Together, they create a coordinated financial ecosystem that can scale technologies from lab to market at speed.

The United States still leads in key areas: private-sector investment (by about 12 times), foundational models and advanced semiconductor design, led by companies like Nvidia. But China is moving quickly to close the gap. Its approach, guided more by state-led industrial policy than purely by market competition, aligns research, infrastructure and industry in a way that the more fragmented western system can struggle to match.

Cities such as Beijing, Shanghai and Shenzhen now host vast AI computing hubs, also known as “AI factories”, which supply the computational power for both research and industry. Technology giants like Huawei, Alibaba, Baidu and more recently DeepSeek are building competitive large-scale models and high-performance hardware alternatives.

Even with export controls limiting access to the most advanced chips, Chinese researchers are optimising algorithms to perform efficiently on domestic hardware – a hallmark of innovation under constraint.

China’s advantage also lies in scale. With 1.4 billion people and massive digital platforms, it generates data at a volume unmatched in other locations. This fuels rapid progress in model training and deployment.

Meanwhile, China now produces more PhDs in the sciences than anywhere else, ensuring a deep pool of AI expertise to sustain momentum. More data, more talent and more coordinated investment create a self-accelerating loop that drives both research and industrial adoption.

If current trends continue, Huang’s words could prove prophetic. China’s combination of scale, strategy and coordination gives it a real prospect of emerging as the world’s leading force in AI development and deployment.

For the west, that could mean adapting to a landscape where standards, platforms and priorities are increasingly shaped by Chinese institutions and industrial ecosystems.

But the future of AI should not be viewed as a zero-sum contest. The most meaningful progress will come from open, responsible collaboration, balanced with sensible export controls and safeguards for dual-use technologies.

Seeing AI as a shared race for human progress might just help us advance further together.

No

Sean Kenji Starrs, Lecturer in International Development, King’s College London

We should first make clear how far ahead the US is. As of early November 2025, it boasts all of the world’s top ten AI firms by market value as well as 37 of the top 50. Nvidia is at number one, having become the first company to be valued at US$5 trillion a few days before Huang’s speech.

China has just four AI firms in the top 50 – the same as Israel. This list excludes major unlisted Chinese AI firms like DeepSeek (valuation US$15 billion), but also much bigger private US players: OpenAI (US$500 billion), Anthropic (US$183 billion) and Databricks (US$100 billion).

Where the US really blows China out of the water is in AI compute power, driven by its access to the world’s most advanced chips. The US has total AI compute of 39.7 million petaflops – half of the world’s total (by summer 2025 numbers).

China’s compute is the world’s seventh largest with 400,000 petaflops, far below even India’s 1.2 million petaflops. This is the result of the US export ban on Nvidia and AMD’s most advanced chips, and is despite the fact that China has 46% (230) of the world’s AI data clusters.




Read more:
DeepSeek: how China’s embrace of open-source AI caused a geopolitical earthquake


With the launch of its low-cost high-performance large language model in January 2025, DeepSeek showed that Chinese firms can innovate around US export constraints and develop comparable AI models using far less resources. But DeepSeek could draw upon Nvidia chips stockpiled before the ban in 2023-24.

An insider has also claimed that DeepSeek secretly had access to 50,000 Nvidia H100s, very advanced chips which were never cleared for export to China (though a review by Nvidia claimed this wasn’t accurate). Meanwhile in September 2025, DeepSeek admitted that its model “unintentionally” distilled OpenAI’s ChatGPT (along with Anthropic’s Claude), underlining its reliance on US technology.

The massive headstart that US rivals have will likely only grow as they continually having unrestricted access to the world’s most advanced chips, as well as capital spending of hundreds of billions of dollars. This is a marathon for the long-term, not a dash, and China is running with much weaker legs.

Huang made his prediction about the AI race despite surely knowing better. It’s true that China has cheaper electricity, but they need a lot more of it because their AI chips are not only much slower but require more energy than Nvidia’s most advanced chips.

Daily energy costs for US AI firms are a rounding error compared to their hundreds of billions of dollars of investment in infrastructure. US firms also have access to data centres in allied countries, including in the UAE and Saudi Arabia. These two nations have a combined 30.3 million petaflops of AI compute, which was built by US firms on condition they both severed ties with Chinese competitors.

What Huang really wants is for the Trump administration to ditch US export controls of his topline AI chips to China. But this isn’t going to happen. We live in a new era of “techno-nationalist globalisation” where major powers see national ownership of advanced technology as core to their security and geopolitical rivalry. The era of “free trade” is over.

Huang should take solace in the fact that he helms the most valuable company in history, and not peddle in self-interested alarmism.

The Conversation

Greg Slabaugh’s work was supported by the Engineering and Physical Sciences Research Council (grant number EP/Y009800/1), through Keystone project funding from Responsible Ai UK (KP0016). He is also a former employee of Huawei Technologies.

Sean Kenji Starrs 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. Will China win the AI race? – https://theconversation.com/will-china-win-the-ai-race-269415

Trust in the BBC is heavily tied to political identity

Source: The Conversation – UK – By Steven David Pickering, Honorary Professor, International Relations, Brunel University of London

Tim Davie, the BBC’s director general, and Deborah Turness, its news CEO, have resigned over accusations of political bias in the corporation. Most notably, these relate to the editing of an episode of Panorama about the January 6 insurrection, which US president Donald Trump says misrepresented him.

Their departure is the latest – and most dramatic – chapter in story that dates back years. At first glance, the move may look like accountability at the top.

“There have been some mistakes made and as director general I have to take ultimate responsibility,” said Davie in his resignation message. But Davie’s departure also speaks to the problems that have beset the BBC for years as it has tried to deal with a decline in trust.

The data tells a clear and worrying story: the problem is not only what the BBC does, but how it is seen across divided audiences.

Trust in the BBC is heavily conditioned by political identity. A survey I conducted with colleagues of 11,170 people in the UK, carried out between December 2022 and June 2024, showed striking differences between how people with left and right-wing party affiliations felt about the broadcaster.

Liberal Democrat voters averaged 4.54 on a one-to-seven trust scale. Those who vote Labour averaged 3.88. Trust among Conservative voters was lower at an average of 3.17. And notably, the average was just 2.16 for Brexit party voters. The findings date back to a time before the Brexit party became Reform UK – and before that party came to dominate in the polls.

In other words, those segments of the electorate that already felt most alienated from the BBC are now among the most politically ascendant.

That creates a profound legitimacy challenge. The broadcaster is losing the trust of the very audiences who, through the ballot box, are increasingly shaping the political environment in which it operates.

This helps explain why the crisis has erupted now. The political currents that distrusted the BBC for years are no longer fringe, but central to national politics.

A bar chart showing that trust in the BBC declines as you move from Liberal Democrats to Labour to Conservative to Brexit party voters.
How trust averages out across party affiliation.
S Pickering, CC BY-ND

When we asked respondents to place themselves on a political spectrum of left to right, we saw a similar patterns. Trust peaked around the centre-left, dropped at the centre, and stayed low on the right. The pattern clearly indicates that trust in the BBC is not uniform, nor does it develop in a vacuum.

We found in our research that these partisan fault lines were not in evidence for Japan’s public broadcaster – suggesting something specific is happening in the UK. In Japan, attitudes toward NHK (the equivalent of the BBC) cut across political lines, with conservatives and progressives reporting broadly similar levels of trust.

That contrast points to distinct political cultures. In Japan, public broadcasting still carries an aura of neutrality tied to institutional continuity, whereas in Britain, the BBC has become a symbolic battlefield in wider culture wars. The British media landscape is more openly adversarial, and perceptions of bias are now interpreted through partisan identity rather than journalistic performance.

Conservative-voting or Brexit-aligned respondents appear to see the BBC as metropolitan and institutionally liberal. On the left and centre-left, the BBC still retains a credibility cushion, but those holdouts will shrink. This is not simply about “bias” or “impartiality” in a narrow sense – it is about legitimacy in different political worldviews.

The fact that two senior figures have resigned should not lull us into thinking the problem has been fixed. On the contrary, what this moment reveals is that the BBC’s challenge is not only managerial – it is political and cultural.

The data from the TrustTracker project shows that trust in the BBC is already deeply polarised. Leadership change alone is unlikely to rebuild it. Instead, the BBC must engage with how it is perceived, by whom, and why. Otherwise, it risks losing the one thing that has set it apart: its role as a genuinely shared public broadcaster in a deeply divided society.

The Conversation

Steven David Pickering received funding from the Economic and Social Research Council (ESRC, reference ES/W011913/1) and the Japan Society for the Promotion of Science (JSPS, reference JPJSJRP 20211704).

ref. Trust in the BBC is heavily tied to political identity – https://theconversation.com/trust-in-the-bbc-is-heavily-tied-to-political-identity-269434

Medieval women’s legacies live on in Britain’s towns and cities

Source: The Conversation – UK – By Rachel Delman, Heritage Partnerships Coordinator, University of Oxford

A new statue of Dervorguilla of Galloway was installed in the Master’s Court of the University of Oxford’s Balliol College in September. She was the 13th-century cofounder of Balliol and its first benefactor.

Carved from a single block of limestone by artist Alex Wenham, it was described by the college as “a valuable contribution to Oxford’s public art, where statues of women – particularly those outside royal or religious contexts – remain sadly rare”.

Wenham’s Dervorguilla has the feeling of a time traveller, at once both medieval and modern. The smooth contours of her recognisably 13th-century form emerge, polished, crisp and authoritative, from the unworked stone around her.

The statue’s commission speaks to a strong drive to populate urban spaces with more monuments to women. Since the Lloyd’s Register Foundation reported in 2018 that fewer than 3% of statues in the UK were of real, non-royal women, several campaigns aimed at documenting and achieving greater gender representation in public art have gained a foothold.

But medieval women themselves shaped the built heritage of our towns and cities. Too often, their efforts have been hidden or ignored, and their legacies neglected.

The women who shaped our cities

A painting of a medieval woman holidng a book
Painting of Dervorguilla of Galloway by Wilhelm Sonmans (1670).
Bodleian Libraries, University of Oxford

My research considers how women used architectural patronage to fashion their identities and curate their legacies in the public realm. In Dervorguilla’s case, her statue complements a living, breathing foundation she brought into being. Even if the buildings of the college today are not ones her 13th-century eye would recognise.

Dervorguilla’s significance as Balliol’s co-founder, however, has been minimised throughout much of the establishment’s history. The college was named after her husband, John Balliol, but Dame Helen Ghosh, master of the college, recently commented it might just as appropriately have been called “Dervorguilla College”.

Ghosh explained that it was Dervorguilla who “did the practical work to set us up, writing our foundational Statutes and financing our first buildings on Broad Street”.

Balliol was not Dervorguilla’s only foundation – she also founded the Cistercian abbey of Dulce Cor in Scotland. It’s known as Sweetheart Abbey, because Dervorguilla was laid to rest there, clutching her husband’s heart – which she had kept in an ivory casket – to her bosom.

Nor was Dervorguilla the only medieval woman to leave a lasting mark on the built environment through her patronage. Many others commissioned foundations during their lifetimes and many of them continue to exist in tangible form, right under our noses. Like Dervorguilla, their actions have often been hidden behind those of male relatives, or overlooked entirely.

Magdalen Chapel
Magdalen Chapel, Cowgate, Edinburgh.
Wiki Commons, CC BY-SA

As creators and benefactors of educational, religious and charitable institutions – from university colleges and schools to churches, hospitals and almshouses – women of means found ways to circumvent the patriarchal power structures of medieval society.

They made themselves visible through acts of charity, piety and self-memorialisation. These women created more than just monuments. They left behind significant cultural and artistic legacies as dynamic testaments to their identities and ambitions.

Today, however, many of those foundations are little-known or awkward outliers in fast-paced and ever-evolving urban environments.

Trinity Apse in Edinburgh is a case in point. Once part of a grand collegiate foundation commissioned by Mary of Guelders, Queen of Scots in 1460, the church was dismantled in the 19th century to make room for platform two of Waverley train station.

After several years, numerous stones were salvaged and a partial rendering of the original church was reconstructed. It’s just behind the Royal Mile in a high-end IKEA flatpack-style reconfiguration now known as Trinity Apse. Though Grade A listed (the highest category of listing in Scotland), the Apse’s future as a publicly accessible heritage site hangs in the balance.

Painting of a queen on horseback
Isabella Queen of France by Froissart (1475).
Gallica

Just round the corner from the Apse on Cowgate – an area of Edinburgh famed for its lively nightlife – stands a pre-Reformation chapel. It contains the tomb of Jonet Rhynd. Rhynd was a local businesswoman responsible for overseeing the construction of the chapel and its associated almshouse, following the death of her husband in 1537.

Take a trip south to the Midlands and in Coventry you’ll find St John the Baptist Church. It was originally founded in 1344 by Queen Isabella of France as a chapel in memory of her family, but is now on the Heritage at Risk register.

Closer to Balliol, in Oxford, are the picturesque ruins of Godstow Abbey, founded by Edith of Winchester in 1115. Overlooked for many years, only in the last decade has the addition of an interpretation board put the abbey, and the story of its female founder, back on the map.

Many of these buildings and structures face a complex web of challenges. Not only are they expensive and complicated to maintain, their origins as religious foundations also adds to their precarity in a climate where the relevance of church buildings is hotly debated.

For the women who founded them, however, patronage was the language through which they made their voices heard. If we are seeking to reassert women’s presence in our public spaces, where better to look than to the very legacies they themselves constructed.


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The Conversation

Rachel Delman received funding from the Arts and Humanities Research Council (2013-2016) and the Leverhulme Trust (2019-2022)

ref. Medieval women’s legacies live on in Britain’s towns and cities – https://theconversation.com/medieval-womens-legacies-live-on-in-britains-towns-and-cities-267906

Can brain training really shave ten years off brain ageing, as a recent study suggests?

Source: The Conversation – UK – By Yolanda Lok Yiu Lau, Postdoctoral Research Associate, Dementia and Neurodegenerative Diseases, Queen Mary University of London

A ten-week online brain training programme helped older adults’ brains act as though they were a decade younger, a recent study has found.

Much like exercise for the body, regular mental workouts can help keep the brain in shape. As we age, brain processes that support memory, attention and decision-making can become less efficient. Keeping the mind active is thought to build a reserve that helps people cope better with these age-related changes.

Studies suggest that people who stay mentally, physically and socially active have a lower risk of developing dementia. For example, in a study involving 120 older adults, those who engaged in regular aerobic exercise had larger brain volumes and better cognitive performance than those who were less active, reversing age-related loss in brain volume over a couple of years.

Studies have also found that brain training can improve older adults’ cognitive performance.

The latest study adds to what we know by testing whether brain training programmes – BrainHQ, in this instance – can change the brain’s chemistry, offering biological clues about how brain training might work.

BrainHQ is a brain training app that offers short, game-like exercises that train cognitive skills such as attention, memory and brain speed. As users improve, the challenges get harder, pushing the brain to adapt – much like increasing the weights during a workout.

Ninety-two healthy adults from Canada, 65 and older, took part. Half of them completed brain training exercises using BrainHQ for 30 minutes a day, five days a week, over ten weeks. The other half, a comparison group, spent the same amount of time playing games designed just for entertainment, such as solitaire.

To see whether the programme made a difference to the brain, all participants had specialised scans before and after the ten weeks of training. These scans can detect tiny chemical changes in brain activity.

The researchers focused on a region called the anterior cingulate cortex, which plays an important role in attention, learning and memory. Those who completed the speed-based exercises showed stronger activity in this area compared to those in the comparison group. The change in brain chemicals seen is described by the researchers as equivalent to shaving ten years off their biological age.

Ageing and cognitive decline (including Alzheimer’s disease) are often linked to reduced activity in this part of the brain. Strengthening it may therefore help delay or reduce cognitive decline and lower the risk of developing dementia later in life.

Although the results look promising, we should be careful about how we interpret them. The study measured many different outcomes. Although the brain training group showed increased activity compared with their own baseline, the difference between the two groups was not statistically significant.

Because the study looked at so many outcomes and involved only a small number of people, some of these changes may simply be due to chance rather than real effects of the training.

An older man and a woman. The man looks confused and troubled.
With ageing, there is often a decline in part of the brain called the anterior cingulate cortex.
LightField Studios/Shutterstock.com

The bigger picture

This was a small study involving healthy, mostly white older adults, and it looked at one specific brain training app. The findings may not apply to people with memory problems or to other types of brain-training programmes, or to longer-term outcomes.

This intervention is relatively short. Research found that most interventions aiming to improve cognitive performance that are successful typically last at least four to six months. Longer-term participation is almost certainly key to achieving lasting improvement in brain health.

Studies like this rely on brain scans as early indicators of benefit, but it remains to be seen whether these biological changes translate into lasting improvements in functioning. Researchers are testing whether similar brain-training programmes can help people who show early signs of dementia. These studies will reveal whether boosting brain activity this way can slow cognitive decline in those already showing symptoms.

High-intensity interventions – such as the one tested that required two and a half hours of training per week – may not suit everyone.

For example, people with existing cognitive concerns who want to improve their cognitive wellbeing may struggle to access digital programmes. They may need more community-based, supportive and lower-intensity interventions. To be an effective dementia programme, recruitment needs to be inclusive, especially reaching people from underserved groups who are at the highest risk.

Cognitive ageing is shaped by many factors – including physical activity, social connection, healthy diet and mental wellbeing – so brain training is likely to be just one part of a broader approach to supporting brain health and dementia prevention. Keeping the mind active may not stop ageing, but it could help the brain stay younger for longer.

The Conversation

Yolanda Lok Yiu Lau 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. Can brain training really shave ten years off brain ageing, as a recent study suggests? – https://theconversation.com/can-brain-training-really-shave-ten-years-off-brain-ageing-as-a-recent-study-suggests-268904