Category: The Conversation – UK

Source: The Conversation – UK – By Anna Matveeva, Visiting Senior Research Fellow, King’s Russia Institute, King’s College London

At a time when Vladimir Putin needs friends in his neighbourhood, he appears instead to be losing them in the South Caucasus. After two centuries of Russian involvement in the region, balancing the historical rivalry and at times acting as mediator between Armenia and Azerbaijan, there is growing speculation that the two countries are preparing a major reset in relations.

When Armenia’s prime minister, Nikol Pashinyan, met the Azerbaijani president, Ilham Aliyev, in Abu Dhabi on July 10, they reportedly came close to agreeing a peace treaty. The big question is whether, if these two countries can iron out mistrust and violence born of the territorial conflict, there will still be a role for Russia in the South Caucasus.

To understand the complex geopolitics of the region, you need to go back to the early 19th century, when Azerbaijan and what is now the Republic of Armenia) were ceded to Russia following the Russo-Persian wars. After the Russian revolution, the two countries achieved brief independence between 1918 and 1920 (though not in their present borders) before being incorporated into the Soviet Union.

During the Soviet era, the union republics of Armenia and Azerbaijan both felt that Moscow favoured the other. Armenia was unhappy that the Soviet leadership allocated Nagorno-Karabakh, a majority-Armenian exclave surrounded by Azeri-populated lands, to Azerbaijan. Azerbaijan was dissatisfied that its borders denied it a land connection to its population in Nakhchivan, an exclave of ethnic Azeris that could only be reached via southern Armenia.

In the final years of the Soviet Union, as Armenian nationalism began to assert itself during the period of perestroika (restructuring), Nagorno-Karabakh’s legislature passed a law declaring its intention to join Armenia. This move eventually led to armed clashes in the region.

The first Karabakh war, which raged between 1988 and 1994, began before the Soviet break-up but continued after the two countries gained their independence. In 1994, after more than 30,000 casualties, Russia brokered a ceasefire. The settlement favoured Armenia, leaving it in control of Nagorno-Karabakh and another six surrounding Azerbaijani districts.

Things began to change when Putin took power in Russia in 2000. Russia’s relations with Azerbaijan improved, partly due to his personal rapport with the then-president, Heydar Aliyev, and his son Ilham, who would succeed him in 2003. After 9/11, when combating international terrorism became a global priority, Azerbaijan put measures in place to prevent transfer of fighters and weapons through its territory to the war in Chechnya, which further improved relations with Moscow.

At this stage, Azerbaijan was pursuing what it described as a “multi-vector” foreign policy. This allowed it to develop ties with a variety of countries, including the US, Russia and others to whom it sold oil. While remaining in the Commonwealth of Independent States, it did not sign up to the Russia-led Collective Security Treaty Organisation (CSTO).

Nagorno-Karabakh

Armenia, by contrast, was a fully participating member of the CSTO. Having signed an Eternal Friendship Treaty with Russia in 1997, this was a clear strategic choice for Armenia – partly motivated by historical ties.

Russia had traditionally been seen as a defender of Christianity in the days of the Ottomon empire. Many people had fled massacres in Western Armenia (modern-day Turkey) in 1915 to come under the protection of the Russian Tsar. But Armenia also saw Moscow as a vital security guarantor against an increasingly militarised Azerbaijan, which was determined to recover control of Nagorno-Karabakh and other areas occupied by Armenia.

Indeed, it was Nagorno-Karabakh which really soured relations between Armenia and Moscow. In 2020, when – aided by Turkey – Azerbaijan launched its offensive to retake the territory, Russia failed to come to the aid of its CSTO ally. This was expected, given that relations had begun to deteriorate in 2018 when Pashinyan came to power in Armenia.

In hindsight, most commentators believe Russia had become tired of Armenia’s intransigence over the plan, agreed in Madrid in 2007, for it to cede back the six districts surrounding Nagorno-Karabakh to Azerbaijan.

Instead, Moscow brokered a ceasefire agreement and deployed 2,000 peacekeepers along the Lachin corridor, a strip of land connecting Armenia and Nagorno-Karabakh. But these troops also failed to intervene when an Azeri offensive retook the whole of Nagorno-Karabakh in September 2023, forcing the population of about 100,000 ethnic Armenians to flee.

---

Read more:
Nagorno-Karabakh: the world should have seen this crisis coming – and it’s not over yet

---

Things sour between Moscow and Baku

Relations between Russia and Azerbaijan, meanwhile, have gone downhill rapidly. In December 2024, an Azeri civilian airliner was shot down in Russian airspace. Putin apologised, but Azerbaijan insisted on Moscow disclosing the results of the investigation and paying compensation to the victims.

Things got worse at the end of June, when Russian authorities arrested a group of ethnic Azerbaijanis as part of a decades-old murder case. Two of the men died while being detained. Azerbaijan retaliated by raiding the Baku offices of Russia’s Sputnik news agency and detaining the staff as well as a group of Russian IT workers. When they appeared in court, some of the men appeared to have been beaten in custody.

Azerbaijan also denounced Russia in state media and Russia House, the state-funded Russian cultural agency in Baku, was closed down, with several cultural events cancelled. Security agencies began to enforce documentation checks on all Russian nationals in the country.

At the same time, Azerbaijan and Armenia were already talking about concluding a peace treaty independently, without intermediaries. All this has prompted speculation of a serious loss of influence in the region for Moscow.

However, a complete shutout of Russia in the South Caucasus is unlikely. Both Armenia and Azerbaijan depend on remittance income from their nationals in Russia. Both countries also remain close trading partners with Russia. While Armenia suspended its membership in CSTO, it has not quit the organisation altogether.

Far more likely is that the two countries, mindful of the growing influence of Turkey in the region and the shifts created by Donald Trump in world affairs, are manoeuvring while weighing their options. Geography matters, as Georgia’s example demonstrates – efforts to cut ties with Russia by its former president, Mikheil Saakashvili, have been partially reversed by the current government, which increasingly leans towards Moscow.

In the cases of Armenia and Azerbaijan, economic ties, transport links and human connections still favour a relationship with Russia. So, a temporary breakdown in political relations can be mended – if all three leaders demonstrate enough statesmanship to sail through the troubled waters.

---

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

Anna Matveeva 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. Armenia and Azerbaijan are trying to mend fences – what does this mean for Russia? – https://theconversation.com/armenia-and-azerbaijan-are-trying-to-mend-fences-what-does-this-mean-for-russia-261384

Source: The Conversation – UK – By Alex Hubbard, Associate lecturer in English Literature and Creative Writing, Aberystwyth University

People are becoming more divided and ill informed. In January 2024, a report by the World Economic Forum identified misinformation and disinformation as “the most severe global risk anticipated over the next two years”.

As a result, it predicted “perceptions of reality are likely to also become polarised” – and that unrest resulting from unreliable information may cause “violent protests … hate crimes … civil confrontation and terrorism”. Many people would agree that something is needed to bridge the ever-widening gaps between ourselves.

In my view, this is not just a problem of alternative sets of facts, but a failure to perceive and empathise with that which is outside of our own experiences.

While the smartphone, with its capacity to provide users with sources from across the world, can provide endless opportunity to learn about other perspectives and experiences, research suggests social media increasingly cocoons users within their own interests.

This algorithmically encouraged self-importance means we are stuck in a feedback loop – the echo chamber – where our own experiences, values and desires are seen as the norm.

In contrast, by encouraging people to imagine beyond their own experience, reading poetry can serve as an exercise in seeing things from a different perspective.

---

Looking for something good? Cut through the noise with a carefully curated selection of the latest releases, live events and exhibitions, straight to your inbox every fortnight, on Fridays. Sign up here.

---

Poetry has always been political. The writer and civil-rights activist Audre Lorde argued it produces “a revelatory distillation of experience”. In other words, by distilling aspects of an experience, poetry can reveal powerful truths about reality.

Lorde’s poem Afterimages (1981) records her memory of turning 21 in the same year that 14-year-old Emmett Till was lynched in Mississippi. The poem’s revelation is a simple one. For black Americans, coming of age means coming to terms with the constant threat of extreme racial violence.

Poetry’s success often relies upon showing people aspects of the world which they might otherwise have ignored, repressed or simply missed.

Some poetry experiments with form itself to produce this revelatory effect. Estate Fragments (2014) is a long poem written by Gavin Goodwin, exploring the Bettws council estate in Newport. It juxtaposes quotations from academic writing alongside interviews with residents – a practice referred to as “found poetry”.

Goodwin attempts to consider the effect that seemingly abstract political decision-making and discussions have on a particular place and community. Take this stanza:

Increased inequality

ups the stakes

‘People that were younger than you

were more dangerous.’

The first two lines quote Common Culture by Paul Willis (1990), a sociological study in the cultures of young people. The latter are from an interview with a resident of the Bettws estate. Together, they tell a story: national economic inequality causes people in a working-class community to fear each other.

Looking closer and looking deeper

More conventional lyric poetry can still reveal sociopolitical realities. Canadian Métis Nation writer katherena vermette’s collection North End Love Songs (2012) explores the North End in Winnipeg, Canada. In a CBC interview, vermette discussed how the local community are:

The people that get picked on [and] blamed … but what I’m trying to do in my work is to go into looking closer and looking deeper … and seeing that they’re not what they seem.

Misinformation and polarisation cause social tension, as particular groups are generalised and blamed. Vermette’s poem indians explicitly explores the devastation caused by preconceptions of peoples and places.

The poem recalls vermette’s brother going missing, before being found in the Red River, a powerful body of water that moves through Winnipeg. It focuses on the apathy of Winnipeg’s police service, who tell the family that there is “no sense looking”, as the man will return when “he gets bored/or broke”. The authorities come to this conclusion not through investigation, but by reducing the speaker’s brother to racist stereotypes.

This is then contrasted with what the family “finds out”. Not only has the brother drowned, but the “land floods/with dead indians”. The speaker discovers the fate of her brother is also the fate of many other Métis people in Winnipeg. This personal experience of loss comes to speak for many other loses:

indians get drunk

don’t we know it?

do stupid things

like being young

like going home alone

like walking across a frozen river

not quite frozen

Vermette links grief to struggles against systematic apathy and oppression. The poem’s sense of politics, people and place are a central part of its poetics.

Such explicitness means the poem meaningfully connects to important political issues – drawing attention to the startlingly high number of missing people found and suspected to be in the Red River. As such, it can also link to important grassroots initiatives like Drag the Red, which aims to “find answers about missing loved ones” which might lie in the river.

While North End Love Songs was published two years before Drag the Red’s formation, the poem and initiative are clearly formed by the same kind of traumatic, sociopolitical events.

Newsfeeds increasingly silo us into comfortable ways of thinking and perceiving. Forty years on, Lorde’s declaration that poetry “is not a luxury” takes on a whole new meaning. Now, it might be a political necessity.

---

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

Alex Hubbard is formerly affiliated with the Labour Party, and Aber Food Surplus, a community hub.

– ref. How poetry can help to fight polarisation and misinformation – https://theconversation.com/how-poetry-can-help-to-fight-polarisation-and-misinformation-255567

Source: The Conversation – UK – By Michelle Spear, Professor of Anatomy, University of Bristol

There’s something oddly luxurious about a lie-in. The sun filters through the curtains, the alarm clock is blissfully silent, and your body stays at rest. Yet lie-ins are often treated as indulgences, sometimes framed as laziness or a slippery slope to soft living.

When the holidays arrive and alarm clocks are switched off, or are set later, something else emerges: your body reclaims sleep. Not just more of it, but deeper, richer and more restorative sleep. Anatomically and neurologically, a lie-in might be exactly what your body needs to recover and recalibrate.

Throughout the working year, it’s common to accumulate a chronic sleep debt – a shortfall in the sleep the body biologically needs, night after night. And the body keeps score.

On holiday, freed from early starts and late-night emails, our internal systems seize the opportunity to rebalance. It’s not uncommon to sleep an hour or two longer per night in the first few days away. That’s not laziness; it’s recovery.

Importantly, holiday sleep doesn’t just extend in duration. It shifts in structure. With fewer disturbances and less external pressure, sleep cycles become more regular, and we often experience more slow-wave sleep – the deepest phase, linked to physical healing and immune support.

The body uses this window not only to repair tissue but also to regulate metabolism, dial down inflammation and restore energy reserves.

Our sleep-wake cycle is governed by circadian rhythms, which are controlled by the brain’s master clock – the suprachiasmatic nucleus in the hypothalamus. These rhythms respond to light, temperature and routine. And when we’re overworked or overstimulated, they can drift out of sync with our environment.

A lie-in allows your circadian system to recalibrate, aligning internal time with actual daylight. This re-training leads to more coherent sleep cycles and better daytime alertness.

Holiday lie-ins also owe something to the drop in stress hormones. Cortisol, released by the adrenal glands, follows a diurnal pattern, peaking in the early morning to get us going.

Chronic stress – from work demands, commuting or constant notifications – can raise cortisol levels and disrupt this rhythm. When you take time off, cortisol production normalises. Waking up without a jolt of adrenaline allows the sleep architecture (the pattern of sleep stages) to stabilise, leading to fewer interruptions and more restful nights.

One of the more striking features of holiday sleep is a surge in vivid dreaming – sometimes unsettlingly so. This is because of a phenomenon called REM rebound. When we’re sleep-deprived, the brain suppresses REM (rapid eye movement) sleep to prioritise deep, restorative phases.

Once the pressure lifts – say, during a lazy week in the sun – the brain makes up for lost REM, leading to longer and more intense dream episodes. Far from frivolous, REM sleep is crucial for memory consolidation, mood regulation and cognitive flexibility.

Sleep also affects your body’s structure. When you lie down, your spine gets a break from the constant pressure of gravity. During the day, as you stand and move around, the intervertebral discs – soft, cushion-like pads between the vertebrae – slowly lose fluid and become slightly flatter. A lie-in gives these discs more time to rehydrate and return to their normal shape. That’s why you’re a little taller in the morning – and even more so after a long sleep.

Meanwhile, microtears in muscles, strained ligaments and overworked joints benefit from prolonged periods of cellular repair, especially during deep sleep stages.

Should we all be sleeping in every weekend? Not necessarily. While occasional lie-ins can help with recovery from acute sleep deprivation, habitual oversleeping –especially beyond nine hours a night – can be a red flag. It’s associated in some studies with higher rates of depression, heart disease and early death. Although long sleep might be a symptom, not a cause.

Larks and owls

That said, the occasional lie-in remains anatomically restorative, especially when aligned with your body’s natural chronotype – a biological predisposition that determines when you feel most alert and when you feel naturally inclined to sleep.

Some people are naturally “larks”, who rise early and function best in the morning. Others are “owls”, who tend to feel sleepy late and wake later, with their peak cognitive and physical performance occurring in the afternoon or evening. Many fall somewhere in between.

Chronotype is governed by the same internal circadian system that regulates sleep-wake cycles, and it appears to be strongly influenced by genetics, age and light exposure. Adolescents typically have later chronotypes, while older adults often revert to earlier ones.

Crucially, chronotype doesn’t just affect sleep. It also plays a role in hormone release, body temperature, digestive timing and mental alertness throughout the day.

Conflict arises when social expectations, such as early work or school start times, force people, especially night owls, to adopt sleep-wake schedules that are out of sync with their biology. This mismatch, known as social jetlag, can lead to persistent tiredness, mood changes and even long-term health risks.

So if you find yourself sleeping in until 9 or 10am on the third day of your holiday, don’t berate yourself. Your body is taking the opportunity to repair, replenish and rebalance. The anatomical systems involved – from your brainstem to your adrenal glands, your intervertebral discs to your dream-rich REM phases – are doing what they’re designed to do when finally given the time.

---

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

Michelle Spear 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. The anatomy of a lie-in: why you sleep more on holiday – https://theconversation.com/the-anatomy-of-a-lie-in-why-you-sleep-more-on-holiday-260149

Source: The Conversation – UK – By Rachel Woods, Senior Lecturer in Physiology, University of Lincoln

How much does your weight really say about your health? Probably less than you think. You could eat your five-a-day, hit the gym regularly, have textbook blood pressure and cholesterol levels – and still be dismissed as “unhealthy” based on the number on the scale. Meanwhile, someone with a so-called “healthy” weight might be skipping meals, running on stress and caffeine, and rarely moving their body.

We’ve been taught to equate thinness with wellness and excess weight with illness. But the science tells a more nuanced story – one where weight is just a single data point in a far more complex picture. So if weight alone doesn’t reflect how healthy we really are, what does?

Body weight is one of the most measured aspects of health. Society places huge emphasis on it, and criticism of a person’s weight is often framed as a health concern. So how much meaningful health information does weight actually offer?

Simply put, body weight measures exactly that – the total weight of a body. Changes in weight over time can give an indication of a person’s calorie intake. If they are gaining weight, they are eating more calories than they burn. If they are losing weight, they are burning more than they eat.

---

Read more:
The body mass index can’t tell us if we’re healthy. Here’s what we should use instead

---

It is perhaps more useful to consider the health information weight doesn’t give us. Important health indicators, such as cholesterol, blood sugar, blood pressure and heart rate are not visible on the scales.

Neither does weight reflect the quality of someone’s diet. A person could be eating plenty of fruit, vegetables and whole foods, getting the vitamins and minerals needed for good energy, bone strength and immune function. Or they might not. They might be eating mostly healthy fats, like those found in olive oil, nuts and fish, which are linked to better heart health. Or they may get their fat from processed foods, high in saturated and trans fats, which increase the risk of heart disease. They may be getting plenty of fibre to support digestion, regulate their blood sugar and maintain healthy cholesterol, or they may be getting very little. Weight alone reveals none of these important dietary details.

Weight also doesn’t accurately reflect how much body fat someone carries, or more importantly, where that fat is located. Visceral fat (which surrounds the internal organs) is linked to a higher risk of heart disease, type 2 diabetes and some types of cancer, whereas subcutaneous fat, found just beneath the skin, poses fewer health risks <link.

Weight doesn’t give details about how much exercise someone does, which improves health even if it doesn’t lead to weight loss. Nor does weight reflect other major influences on health, like sleep quality or stress.

All of these factors are harder to measure than body weight, and far less visible at first glance, but they provide a much more meaningful picture of someone’s health.

This is not to say that there is no association between weight and these factors, but the link is not clear cut. Details such as someone’s diet quality or their activity patterns cannot be found by simply looking at their weight.

At a population level, there is a clear association between higher body weight and increased risk of disease. For instance, studies show that people classified as overweight or obese using body mass index (BMI), which is a measure of weight relative to height, tend to have higher rates of cardiovascular disease, type 2 diabetes and certain types of cancer.

Some people who are classified as overweight or obese have healthy blood pressure, cholesterol and blood sugar levels. This is often referred to as “metabolically healthy obesity”. On the other hand, someone with a “healthy” body weight might have high visceral fat, poor diet quality, or a sedentary lifestyle – increasing their health risks, despite appearing thin. Terms like “Tofi” (thin outside, fat inside) or “skinny-fat” have emerged to describe this.

These examples highlight how health cannot be judged accurately by weight alone. Someone eating a fibre-rich diet, high in vegetables, whole grains and healthy fats – all of which are linked to better health outcomes, might still fall into the “overweight” category, and be perceived as unhealthy simply because they eat more calories than they burn.

Conversely, a person eating a diet low in nutrients but not exceeding their calorie requirements may be considered a “healthy” weight. Which of these people would be viewed as healthy by society, and which by a doctor?

Why we think weight matters

So, why is so much emphasis put on a person’s weight? In truth, it probably shouldn’t be. However, it is a cheap and easy thing to measure, unlike blood tests, dietary assessments or body scans, which require more time, money and expertise. It’s not to say that more detailed tests are never carried out, but cost is usually a consideration.

Weight is also very visible. It is one of the few aspects of health that’s apparent to others at a glance. This makes it easy for society to pass judgement. But what is visible isn’t always what matters most. Societal ideas about what a “healthy” body looks like are deeply ingrained and not necessarily evidence based.

While losing weight as a result of healthy lifestyle modifications improves health, these modifications, such as increasing exercise and improving diet, have been shown to benefit health even if weight is not lost.

It has also been shown that the societal stigma surrounding obesity is not helpful in achieving weight loss, and can actually undermine it.

Therefore, if health really is the main concern, attention should shift away from weight as the primary focus and towards factors such as diet quality, physical activity, sleep and stress. Improvements in these areas can offer health benefits to people of all sizes.

---

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

Rachel Woods 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. Why you can’t judge health by weight alone – https://theconversation.com/why-you-cant-judge-health-by-weight-alone-260659

Source: The Conversation – UK – By Adrian Bevan, Professor of Physics, School of Physical and Chemical Sciences, Queen Mary University of London

The alchemist’s dream is to make gold from common metals, but can this be done?
The physics needed to explain how to change one element into another is well
understood and has been used for decades in accelerators and colliders, which smash sub-atomic particles together.

The most notable present-day example is the Large Hadron Collider at Cern, based in Geneva. But the costs of making gold this way are vast, and the quantities generated are minuscule.

For example, Cern’s Alice experiment estimated it produced only 29 picogrammes of gold while operating over four years. At that rate, it would take hundreds of times the lifetime of the universe to make a troy ounce of gold.

The Californian startup company Marathon Fusion has proposed a very different approach: to use the radioactivity from neutron particles in a nuclear fusion reactor to transform one form of mercury into another, called mercury-197.

This then decays into a stable form of gold: gold-197. This process of particle decay is where one subatomic particle spontaneously transforms into two or more lighter particles. The team from Marathon Fusion estimates that a fusion power plant could produce several tonnes of gold per gigawatt of thermal power in a single year of operation.

Bombarding the isotope mercury-198 with neutrons leads to the creation of the
radioactive isotope mercury-197 – which subsequently decays to the only stable
isotope of gold.

The key is to have energetic enough neutrons to trigger the mercury decay sequence. If this could be made to work, then it is an interesting idea. But whether it could make a tidy profit is another matter.

To do this, a large neutron flux (a measure of the intensity of neutron radiation) is required. This can be generated using a standard fuel mix for fusion reactors, deuterium and tritium (both of which are forms of hydrogen), to create energy in the plasma of a fusion reactor.

Neutrons penetrate material easily and scatter off the nuclei (cores) in atoms, slowing down as they do so. Neutrons with energies above 6 million electron volts are required to transform mercury-198 into gold.

To come up with its estimates, Marathon Fusion has been using a fusion reactor’s “digital twin” – a computer model that simulates the physics of the fusion reaction and the resulting radioactive processes. A limitation of this type of work is that the digital twin needs to be validated against a real commercial fusion reactor – but none currently exist.

There are many challenges to overcome before scientists can realise a commercial fusion reactor. These include the creation of new materials for its construction, and understanding the science required both to operate the system to continuously extract power, and to develop AI systems that can help keep the plasma fusion reaction running.

Even some of the most advanced fusion experiments, such as the UK-based JET (Joint European Torus) project, could only generate relatively small amounts of energy. However, researchers in the UK have devised a new way to shrink the size of fusion reactors by changing the way the exhaust plasma is controlled. A prototype of this novel fusion reactor concept, called Spherical Tokomak for Energy Production (Step), aims to be ready by 2040.

Radioactive waste

On paper, it is possible to make gold from mercury in a fusion reactor. However, until commercial fusion reactors are realised, the assumptions used by Marathon Fusion in its digital twin studies will remain untested.

Furthermore, any gold produced at a fusion reactor would initially be radioactive, meaning it would be classified as radioactive waste – and thus need to be managed for quite some time after production.

As nuclear and particle physicists know well, it is very easy to forget to include important physical effects and critical details when creating a digital twin of an experiment. But while the processing of that waste into usable forms of pure gold would be a further challenge to address, it will not necessarily deter long-term investors.

For now, this remains an attractive proposition on paper – but we’re still some way off from kickstarting a new kind of Californian gold rush.

Adrian Bevan 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 company says it could turn mercury into gold using nuclear fusion. Can we take this claim seriously? – https://theconversation.com/a-company-says-it-could-turn-mercury-into-gold-using-nuclear-fusion-can-we-take-this-claim-seriously-261891

Source: The Conversation – UK – By Ahmed Elbediwy, Senior Lecturer in Clinical Biochemistry / Cancer Biology, Kingston University

Green tea and red wine may seem like simple dietary choices – but beneath the surface, they harbour compounds with remarkable medical potential. Scientists are uncovering how these everyday drinks might support cancer treatment, not by replacing conventional therapies like chemotherapy or radiotherapy, but by enhancing their effectiveness and reducing their side-effects.

The humble cup of green tea, first enjoyed in first-century China, has long been valued for its cultural significance and traditional health benefits. Tea has historically been used to combat ageing, protect the brain and heart, and aid weight loss. Today, researchers are uncovering a more profound capability – its potential to fight cancer.

The key lies in epigallocatechin gallate (EGCG), a potent antioxidant found in this kind of tea. Antioxidants are protective molecules that help shield cells from damage caused by free radicals and environmental stress, but EGCG appears to do much more.

Cancer cells are notoriously disruptive, hijacking the body’s normal energy-systems to fuel their rapid growth. EGCG targets this very process, disrupting how cancer cells generate energy, and attacking the proteins that help tumours grow and divide. By targeting these proteins, it prevents cancer from multiplying, ultimately leading to cell death.

Even more promising is EGCG’s ability to enhance conventional treatments. Early studies suggest it could make cancer cells more vulnerable to chemotherapy and radiation therapy, potentially reducing the need for high doses and their severe side-effects.

For those who prefer their green tea in powdered form, matcha offers even greater protection, as it’s made from whole ground tea leaves and contains significantly more EGCG than regular green tea.

Red wine’s protective power

Red wine, too, offers compelling potential, thanks to a substance called resveratrol. This compound is found in red grapes, blueberries and peanuts, and has been shown to support the heart, liver and brain. Interestingly, resveratrol works through mechanisms distinct from EGCG.

Rather than targeting cancer cells directly, resveratrol focuses on the tumour’s environment. Cancer cells cleverly surround themselves with blood vessels and supportive tissue, creating a protective fortress that aids growth and spread. Resveratrol disrupts this structure, making tumours vulnerable to conventional treatments.

The compound also enhances the immune system’s ability to recognise and attack cancer cells more effectively. Perhaps most significantly, resveratrol prevents tumours from forming new blood vessels – the lifelines they need to obtain nutrients for growth. Without this blood supply, tumours become starved and eventually die.

Beyond the glass

The potential of natural cancer-fighting compounds extends far beyond our favourite beverages. Apigenin, found in parsley, can slow tumour growth, while turmeric contains curcumin, which disrupts cancer-cell survival. And emodin, found in aloe vera and rhubarb, reduces inflammation and inhibits cancer growth.

However, scientists face a significant challenge: many of these natural substances are poorly absorbed by the body. Research in this area is currently focused on developing enhanced delivery systems, such as wrapping the compounds in tiny lipids called nanoparticles. This approach protects the substances and increases their effectiveness against tumours.

The absorption of natural substances are further improved by mixing compounds with each other such as piperine with curcumin. Piperine is found in black pepper and helps curcumin based nanoparticles to have better bioavailabilty in cancer therapy.

While the research remains in its early stages, the possibility that everyday foods and drinks could one day support cancer treatment represents a fascinating frontier in medical science.

So the next time you reach for a cup of green tea or a glass of red wine, consider this: you may be doing more than relaxing – you could be reinforcing your body’s natural defences against cancer.

---

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

Ahmed Elbediwy does 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.

Nadine Wehida 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. Unlocking nature’s toolkit: how plant compounds may support cancer therapy – https://theconversation.com/unlocking-natures-toolkit-how-plant-compounds-may-support-cancer-therapy-260225

Source: The Conversation – UK – By Malte Jauch, Lecturer in Management and Marketing, University of Essex

The retirement age keeps creeping up. In the UK, the state pension is currently paid to people at 66, but that’s set to rise to 67 in the next couple of years, and a move to 68 might come sooner than previously planned after the government launched a review.

Gradually increasing the working lifespan is never going to be popular. But one way of making this policy more palatable could be to give people early access to some of the free time that retirement promises.

After all, sometimes that promise fails to deliver, because many people die before they reach retirement age.

Globally, about 27% of men and 18% women die before the age of 65 (although this proportion also includes deaths before working age). In wealthy countries, the number of people who die prematurely is lower than the global average, but still significant. In the EU, 16% of men and 8% of women die before 65.

For these people, the promise of free time and leisure in old age never materialises. There will also be many whose physical and mental health will have deteriorated by the time they retire, so that they are less capable of enjoying their free time.

So perhaps slogging away until retirement is not an ideal arrangement.

But what if you could transfer some of the time off that retirement promises to an earlier stage of your life, when everything is a rush, crammed with the demands of work and domestic responsibilities?

Luckily, the stark contrast between a time-poor middle age and a time-rich old age is not unavoidable. Governments can choose different approaches that directly affect how free time is distributed across our life stages.

Japan, for example, is a country which has opted to focus on delaying leisure time, and encourages workers to postpone that enjoyment of free time until old age. It does this in part by rewarding workers with wage increases – known as “seniority-based pay” – if they don’t take career breaks.

Japanese employment law also permits companies to force employees to retire at the age 60. As a result, on average, Japanese workers work 1,680 hours per year and retire at 63.

In the Netherlands by contrast, people work less (1,433 hours per year) and retire later – at 67. Labour laws make it easier for employees to decrease their hours, by going part time, for example.

Discrimination between workers based on work hours is prohibited, so that those who opt for part-time work are guaranteed equal treatment with regard to wages and other benefits. But the high legal age of retirement discourages Dutch workers from early retirement.

So how should we assess these different approaches?

Time on your side?

One way to look at retirement is that it compensates us for our previous hard work. The prospect of compensation might lead us to adopt a relaxed attitude toward long work hours. Once we’ve stopped work, we’ll be rewarded with a large chunk of leisure.

But for those who don’t make it to retirement, this promise of a life of leisure turns out to be a cruel joke. Early deaths are also more prominent among those who have already suffered from poverty and other disadvantages.

The same is true for ill health. The disadvantaged are much more likely to suffer from a variety of conditions that prevent them from being able to fully enjoy retirement.

Another risk for those who are healthy when they retire is that relatives or friends may have died. This reduces the value of the retirees’ free time because the loved ones they hoped to share that time with are no longer around.

So perhaps some of that free time could be better used when workers are younger. Raising a family, for example, is extremely time consuming, and there can’t be many parents of young children who don’t wish for a few extra hours a week to call their own.

Even devoting time to hobbies when we’re younger might be considered more efficient than waiting until we have retired. After all, if you learn a new language or how to paint when you’re in your 40s, you may have much more time to enjoy your new skill over the ensuing decades.

My research suggests that for all these reasons, the state should help people take some of their retirement early.

None of us knows how long we will live, or how healthy we will be in the future. Faced with this uncertainty, it makes sense not to gamble with our opportunities for free time and leave it until it may be too late.

Even those who enjoy their work have strong reasons not to postpone a large proportion of their time off, and governments should help us access more of it while we’re younger.

---

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

Malte Jauch 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. As the UK reviews the pension age again, could more time off when you’re young compensate for later retirement? – https://theconversation.com/as-the-uk-reviews-the-pension-age-again-could-more-time-off-when-youre-young-compensate-for-later-retirement-259464

Source: The Conversation – UK – By Adam Taylor, Professor of Anatomy, Lancaster University

Would you dab perfume on a six-month-old? Paint their tiny nails with polish that contains formaldehyde? Dust bronzer onto their cheeks?

An investigation by the Times has found that babies and toddlers are routinely exposed to adult cosmetic products, including fragranced sprays, nail polish and even black henna tattoos.

While these may sound harmless – or even Instagram-friendly – the science tells a more concerning story. Infant skin is biologically different from adult skin: it’s thinner, more absorbent and still developing. Exposure to certain products can lead to immediate problems like irritation or allergic reactions, and in some cases, may carry longer term health-risks such as hormone disruption.

This isn’t a new concern. A 2019 study found that every two hours in the US, a child was taken to hospital because of accidental exposure to cosmetic products.

Newborn skin has the same number of layers as adult skin but those layers are up to 30% thinner. That thinner barrier makes it easier for substances, including chemicals, to penetrate through to deeper tissues and the bloodstream.

Young skin also has a higher water content and produces less sebum (the natural oil that protects and moisturises the skin). This makes it more prone to water loss, dryness and irritation, particularly when exposed to fragrances or creams not formulated for infants.

The skin’s microbiome – its protective layer of beneficial microbes – also takes time to develop. By age three, a child’s skin finishes establishing its first microbiome. Before then, products applied to the skin can disrupt this delicate balance. At puberty, the skin’s structure and microbiome change again, altering how it responds to products.

The investigation found that bronzers and nail polish were being used on young children. These products often contain harmful or even carcinogenic chemicals, such as formaldehyde, toluene and dibutyl phthalate.

Toluene is a known neurotoxin, and dibutyl phthalate is an endocrine disruptor – a chemical that can interfere with hormone function, potentially affecting growth, development and fertility. Both substances can more easily pass through infants’ thinner, more permeable skin.

Even low-level exposure to formaldehyde, such as from furniture or air pollution, has been linked to higher rates of lower respiratory infections in children (that’s infections affecting the lungs, airways and windpipe).

Irritating ingredients

In the US, one in three adults experiences skin or respiratory symptoms after exposure to fragranced products. If adults are reacting, it’s no surprise that newborns and children with their developing immune systems are at even greater risk.

Perfumes often contain alcohol and volatile compounds that dry out the skin, leading to redness, itching and discomfort.

Certain skincare ingredients have also been studied for their potential to affect hormones, trigger allergies or pose long-term health concerns:

• alkylphenols used in detergents and cosmetics may disrupt hormone activity

• antimicrobials such as triclosan can interfere with thyroid hormones and contribute to antibiotic resistance

• bisphenols, (BPA widely used in packaging are linked to hormone disruption.

• cyclosiloxanes (D4 and D5) may accumulate in the body and affect hormonal balance

• ethanolamines can react with other ingredients to form nitrosamines, some of which are potential carcinogens

• parabens are preservatives that mimic oestrogen, though some studies suggest minimal risk at low doses

• phthalates used in fragrances and plastics are linked to reproductive toxicity, especially in early-life exposures

• benzophenone is found in many sunscreens and some forms may act as allergens and hormone disruptors.

While many of these ingredients are permitted in regulated concentrations, some researchers warn of a “cocktail effect”: the cumulative impact of daily exposure to multiple chemicals, especially in young, developing bodies.

---

Read more:
Scroll, watch, burn: sunscreen misinformation and its real‑world damage

---

Temporary tattoos

Temporary tattoos, particularly black henna, are popular on holidays but they aren’t always safe. Black henna is a common cause of contact dermatitis in children and may contain para-phenylenediamine (PPD), a chemical approved for use in hair dyes but not for direct application to skin.

PPD exposure can cause severe allergic reactions and, in rare cases, cancer. Children may develop hypopigmentation – pale patches where colour is lost – or, in adults, hyperpigmentation that can last for months or become permanent.

Worryingly, children exposed to PPD may experience more severe reactions later in life if they use hair dyes containing the same compound. This can sometimes lead to hospitalisation or even fatal anaphylaxis. Because of these risks, European legislation prohibits PPD from being applied directly to the skin, eyebrows, or eyelashes.

‘Natural’ doesn’t mean harmless

Products marketed as “natural” or “clean” can also cause allergic reactions. Propolis (bee glue), for instance, is found in many natural skincare products but causes contact dermatitis in up to 16% of children.

A study found an average of 4.5 contact allergens per product in “natural” skincare ranges. Out of 1,651 “natural” personal care products on the US market, only 96 (5.8%) were free from contact allergens. Even claims like “dermatologically tested” don’t guarantee safety; they simply mean the product was tested on skin, not that it’s free from allergens.

Babies and young children aren’t just miniature adults. Their skin is still developing and is more vulnerable to irritation, chemical absorption and systemic effects: substances that penetrate the skin can enter the bloodstream and potentially affect organs or biological systems throughout the body. Applying adult-targeted products, or even well-meaning “natural” alternatives, can therefore carry real risks.

Adverse reactions can appear as rashes, scaling or itchiness and, in severe cases, blistering or crusting. Respiratory symptoms like coughing or wheezing should always be investigated by a medical professional.

When in doubt, keep it simple. Limit what goes on your child’s skin, especially in the early years.

---

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

Adam Taylor 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. Using cosmetics on babies and children could disrupt horomones and trigger allergies – https://theconversation.com/using-cosmetics-on-babies-and-children-could-disrupt-horomones-and-trigger-allergies-261204

Source: The Conversation – UK – By Benjamin Selwyn, Professor of International Relations and International Development, Department of International Relations, University of Sussex

Global supply chains account for 70% of world trade. They are the arteries of global capitalism, moving goods and services across borders multiple times before reaching consumers.

Since the early 1990s — as part of economic globalisation — these networks have enabled mass consumption by delivering cheap goods made using cheap labour and shipped globally at minimal cost. But this convenience comes at a catastrophic environmental price.

The infrastructure that supports global supply chains — ports, highways, railways, data servers — has expanded dramatically, increasing the distance goods travel from production to consumption to disposal. These “supply chain miles” are a major contributor to ecological degradation.

Worse still, managing these sprawling networks depends on energy-intensive digital technologies, produced and distributed through global supply chains. Electronic waste is soaring, reaching 62 million tonnes in 2022 and projected to increase to 82 million tonnes by 2030.

Global supply chains have also driven the expansion of global markets. Argentina’s soy industry is a case in point: production surged from under 30,000 tonnes in 1970 to over 60 million tonnes in 2015, largely to feed the world’s growing livestock population.

Consequently, much of the Argentinian pampas region – previously renowned for its rich biodiversity – has been decimated by soy monocultures.

As an expert on global supply chains, I study what can be done to remedy this environmentally damaging situation. My research shows that this problem runs deeper than logistics.

Global supply chains are a key part of the capitalist system that thrives on endless economic growth. Competitive capital accumulation (where profits are reinvested to generate more profits) drives this cycle.

The global economy is forecast to more than double by 2050. This entails an accelerated use of resources and waste generation, in a world that has already transcended an increasing number of planetary boundaries or safe limits of consumption.

---

Read more:
Society needs a systems update to cope with climate crisis – my new film explains why

---

While green technologies can hypothetically make supply chains more efficient, enhanced efficiency under capitalism often leads to more production, not less. Efficiency gains can reduce costs, make goods more profitable and stimulate greater investment. Energy-saving lightbulbs and digital tools, for example, have led to broader adoption and higher overall energy use, rather than a decrease in energy demand.

Better tech alone won’t reduce environmental harm. We need a shift toward a low-energy economy that prioritises human and ecological wellbeing over profit.

Public transport, healthcare, open-source software and urban food systems are examples of social provision that are often cheaper, more inclusive and more environmentally sustainable than their profit-orientated alternatives.

Greening supply chains

I’ve identified five practical steps that can reduce the environmental footprint of supply chains.

First, accelerating the transition from fossil fuels to renewables is essential. The Danish Island of Samsø went from fossil fuel dependence to 100% renewable energy by the early 2000s in the space of a decade by constructing and deploying on- and off-shore wind-power and biomass boilers. Scaling up such transitions could power cleaner supply chain infrastructure.

Second, the electrification of shipping means that battery-powered shipping is no longer science fiction. The Yara Birkeland, the world’s first fully electric cargo ship, recently launched with a 100-container capacity. One study suggests that 40% of container traffic could be electrified this decade using existing technology.

Third, by designing for durability and repair, digital and electronic products can be built to last and easy to repair. The “right to repair” movement advocates for consumer rights to fix and repair products rather than having to buy new ones and is gaining traction.

It is challenging corporate control over who can fix what. Six US states have passed laws giving consumers the right to repair their own devices. In the UK, a community initiative called the Restart Project is pushing for stronger regulations and promoting community-based repair initiatives and digital technology sharing.

Fourth, urban transport needs a rethink. Road transport accounts for about 12% of global greenhouse gas emissions. That sector could be streamlined by shifting supply chains from manufacturing millions of cars to investing in efficient and affordable bus, train and bike networks. Car-free cities and expanded electric public transport networks could slash emissions from road transport. This is already happening in places like Ghent in Belgium, Amsterdam in the Netherlands, Lamu Island in Kenya and Fes el Bali in Morocco.

Fifth, supply chains can be shortened by shifting diets. Reducing meat consumption could shrink the global feed-livestock chain the vast complex of animal feed production (such as soy) underpinning the burgeoning world cattle population and its associated transport emissions.

Countries such as Germany, the Netherlands and Denmark have already seen declines in meat consumption over the past decade as plant-based diets have gained popularity. The UK is also experiencing a fall in per capita meat consumption

These strategies are all tiny steps in the right direction. But, as the US author and environmentalist Bill McKibben says, “winning slowly is the same as losing”. We need much greater and more rapid transformations.

So, while parts of supply chains can become more sustainable, any efforts will be counterproductive as long as governments and firms continue chasing endless economic growth. What’s needed now is the political and cultural will to prioritise people and the planet over profit.

---

Don’t have time to read about climate change as much as you’d like?

Get a weekly roundup in your inbox instead. Every Wednesday, The Conversation’s environment editor writes Imagine, a short email that goes a little deeper into just one climate issue. Join the 45,000+ readers who’ve subscribed so far.

---

Benjamin Selwyn 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 to reduce the hidden environmental costs of supply chains – https://theconversation.com/how-to-reduce-the-hidden-environmental-costs-of-supply-chains-259595

Source: The Conversation – UK – By Hussein Boon, Principal Lecturer – Music, University of Westminster

Spotify currently has 675 million active users. Now, as it expands into video for music streaming and as more people use Spotify, the app’s environmental footprint is set to increase.

In-video advertisements that aim to increase ad revenue involve AI to tap into a users’ preferences. This means lots of individual videos with minor differences requiring additional processing scaled to the user’s streaming resolution.

But while Spotify used to publish data on its environmental costs, its reports have been incomplete since 2021. As American author and scholar, Shoshanna Zuboff points out in her book The Age of Surveillance Capitalism, many tech companies lack environmental accountability.

---

Read more:
Music streaming has a far worse carbon footprint than the heyday of records and CDs – new findings

---

The Carbon Trust, a consultancy that helps businesses reduce their carbon footprints, works to globally promote a sustainable future and has calculated the European average carbon footprint for video streaming as producing 55g of CO₂e per hour. This CO₂e or carbon dioxide equivalent is a comparable measure of the potential effect of different greenhouse gases on the climate: 55g of CO₂e is 50 times more than audio streaming and the equivalent of microwaving four bags of popcorn.

As a music technology and AI researcher, I’m aware of the shift in responsibility that comes with Spotify’s video innovations. While companies’ significant role in generating emissions should not be diminished, the shift of responsibility fromt he platform to users and content creators means that better informed choices about their streaming devices and streaming quality settings larger screens need to be made. Streaming at higher resolutions becomes significant factors in increasing video’s carbon footprint.

This increased responsibility means that end users needs to make better informed choices about their streaming devices and streaming quality settings.

While companies’ significant role in generating emissions should not be diminished, this shift of responsibility to the end user means that larger screens and streaming at higher resolutions become significant factors in increasing video’s carbon footprint.

Location also affects how carbon emissions are managed. Germany has the largest carbon footprint for video streaming at 76g CO₂e per hour of streaming, reflecting its continued reliance on coal and fossil fuels. In the UK, this figure is 48g CO₂e per hour, because its energy mix includes renewables and natural gas, increasingly with nuclear as central to the UK’s low-carbon future. France, with a reliance on nuclear is the lowest, at 10g CO₂e per hour.

There is an absolute burden of responsibility on tech and media companies to reduce their carbon emissions and to be transparent about their efforts to do so. In fact, net zero cannot be achieved without commitments from the major technology companies, many of which are based in the US whose government has not ratified the Kyoto protocol and withdrew from the Paris agreement in 2020 which are both significant global efforts to combat climate change.

Eco-conscious music streaming

A French thinktank called the Shift Project advocates for people and companies to adopt “digital sobriety” (the mindful use of digital tech) to ensure efficiency and sustainability. For example, research shows that the UK could reduce its carbon output by more 16,433 tonnes if each adult sent one less thank you email a day.

Certainly aimless streaming should be avoided because video decoding can account for 35-50% of playback energy on user devices. However, music video is more than mere music. As I have argued in my own work, video “provides a layer of meaning making not present in lyrics or audio alone”.

Video can bring marginalised music makers, cultures and ideas to the foreground by tackling difficult subjects. Like the work of Syrian-American rapper, poet, activist and chaplain Mona Haydar’s Wrap My Hijab or UK grime rapper Drillminister and his critique of neo-liberalism and trickle-down economics Nouveau Riche.

To minimise the environmental footprint of your own music streaming, use Wi-Fi rather than 4G or 5G. If you listen to a song repeatedly, purchase a download to play. Use localised storage rather than cloud-based systems for all of your music and video files. Reduce auto-play, aimless background streaming or using streaming as a sleep aid by changing the default settings on your device including reducing streaming resolution. And turn your camera off for video calls, as carbon emissions are 25 times more than for audio only.

---

Don’t have time to read about climate change as much as you’d like?

Get a weekly roundup in your inbox instead. Every Wednesday, The Conversation’s environment editor writes Imagine, a short email that goes a little deeper into just one climate issue. Join the 45,000+ readers who’ve subscribed so far.

---

Hussein Boon 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. As Spotify moves to video, the environmental footprint of music streaming hits the high notes – https://theconversation.com/as-spotify-moves-to-video-the-environmental-footprint-of-music-streaming-hits-the-high-notes-259939