Author: MIL-OSI Publisher

Source: The Conversation – UK – By Paolo Aversa, Professor of Strategy, King’s College London

At the Winter Olympics, athletes race down immaculate white slopes. The snow looks perfect. But it is largely manufactured.

In Italy, where rising temperatures and declining snowfall were felt earlier than in other Alpine regions, technological fixes began in the 1990s. Today, reliance on artificial snow is widespread: around 95% of Italian ski resorts use snowmaking, and more than 70% of slopes are covered by artificial snow during the season.

Modern snowmaking uses a large fan-like “snow canon” to spray tiny droplets of water into cold air, where they freeze before landing on the ground. Vehicles known as piste bashers (in Europe) or snowcats (in North America) then compress and groom that new snow until it forms a more stable base. The process does not rely on chemical additives. It has become so effective that it can now guarantee competition-grade conditions even when natural snowfall is increasingly unreliable.

Together with colleagues at the Universities of Oxford and Trento, I have been part of the Hot Snow project, investigating what all this means for the ski industry.

We know that continuous innovation – often referred to by the industry as “technical snow” – has helped protect winter sports. Yet we found it also carries a less visible risk: successful adaptation through artificial snow can make the ski industry complacent about climate change.

How artificial snow really works

In leading resorts, artificial snowmaking process is data-driven and highly automated. At the touch of a tablet, operators can adjust the quality and density of new snow, depending on temperature, humidity and the sort of surface they want to create. This produces snow that can be more controllable and durable than natural snowfall.

Snowmaking systems have become more energy efficient over time. Production is optimised to exploit the coldest possible weather windows, reducing energy use per cubic metre of snow. In regions such as the Dolomites, where the Olympic ski races are being held, resorts largely rely on renewable electricity and rainwater stored in artificial basins.

Even so, artificial snow remains energy intensive. In Italian ski resorts, snowmaking accounts for around 30–40% of total energy consumption, with annual costs of €50 million to €100 million (£44 million to €88 million). Across the Alps, total energy demand for artificial snow is estimated at around 2,100 gigawatt-hours per winter season – roughly equivalent to the total annual domestic electricity use of Milan.

The water footprint is just as significant. Artificial snow production in Italy alone consumes around 100-150 million cubic metres of water each year – roughly equivalent to the annual water use of between 1 million and 1.5 million people.

In regions where winter precipitation is becoming less reliable and summers are growing hotter and drier, this growing competition for water adds another layer of pressure, particularly for mountain communities and downstream users. For this reason, ski resorts increasingly rely on artificial reservoirs to store water which, though useful in dry seasons, are often harmful to mountain landscapes and ecosystems.

When adaptation becomes a trap

The effectiveness of snowmaking is both a blessing and a curse.

Across Europe, artificial snow now underpins much of the ski industry. In many regions, slopes depend on it to open at all. This technological success creates what economists call a lock-in effect. Resorts continue to invest heavily in snow cannons, reservoirs and grooming vehicles, even in areas where artificial snow may soon become unviable.

At the same time, rising infrastructure costs requires a constant increase in consumer prices. Ski pass prices have increased by around 40% since 2021, further turning skiing into a sport accessible only to those with deep pockets. Each new investment further entrenches this trajectory, making it progressively harder to step back and rethink alternatives for the future of these resorts.

The illusion of control

Some snowmaking systems can technically operate even when air temperatures rise above freezing, albeit at a very high energy cost. One manufacturer has demonstrated technology capable of producing snow at ambient temperatures of up to 20°C. That possibility reinforces a dangerous narrative: that innovation alone will solve the problem.

But climate projections suggest there will come a point when even artificial snow cannot compensate for warming conditions at many altitudes. In Italy, most resorts located around 1,000 metres above sea level have abandoned hopes of operating consistently, while skiing in the Apennines – once a preferred destination for central and southern Italy – has largely shut down.

When artificial snow stops being viable, the transition is often abrupt. Resorts are left with stranded assets and communities face sudden economic shocks. This is what we describe as an “expiring industry”, one that can appear economically healthy today while facing a clear climate-driven end date.

The danger is not collapse tomorrow, but delay today. As long as slopes remain open and bookings stay strong, there is little incentive to invest in alternatives. After all, winter tourism is still worth over €11 billion (£9.6 billion) a year to the Italian economy alone.

What should change

Those who benefit from the status quo are unlikely to propose alternative futures. Public policy therefore plays a crucial role in shaping which futures remain possible.

Continuing to subsidise ski infrastructure may keep slopes open for a few more seasons, but it also deepens reliance on winter snow in places where long-term viability is increasingly uncertain. It risks diverting public money, attention and political capital away from transitions that could actually endure.

A different approach would make public support conditional. Resorts could be required to disclose water and energy use transparently, and to present credible plans to diversify beyond winter-only tourism rather than simply extending it. This would also mean scrutinising claims that lift infrastructure can function as sustainable, year-round transport — a justification often used to secure public funding, but rarely realised in practice.

I’m a passionate skier myself. As a Veneto native, the Dolomites are my favourite place to ski. So this is not about blaming skiers or dismissing snowmaking technology, which has helped sustain jobs in the mountain communities of my region.

The problem is mistaking successful short-term adaptation for a viable long-term strategy. When technological fixes stand in for long-term planning, they delay investment in alternatives and leave regions more exposed when climate limits are finally reached.

As long as artificial snow keeps slopes white against an increasingly green landscape, it is easy to believe alpine skiing will always be there. But this is not simply kicking the can down the road. It is pushing it uphill. And metre by metre, the slope is getting steeper.

Paolo Aversa works on the Hot Snow project with professor Juliane Reinecke at the University of Oxford and professor Alberto Nucciarelli and Dr Edoardo Trincanato at the University of Trento.

The research has been supported by The Center of Sustainable Business at King’s Business School, The Fondazione CARITRO, and the Center for Sports and Business at the Stockholm School of Economics.

– ref. Will artificial snow save the ski industry in the long run – or curse it? – https://theconversation.com/will-artificial-snow-save-the-ski-industry-in-the-long-run-or-curse-it-275270

Source: The Conversation – UK – By Viren Swami, Professor of Social Psychology, Anglia Ruskin University

About a decade ago, author Mandy Len Catron wrote an essay for the New York Times about “36 questions that lead to love”. The idea suggests that two people can grow closer – and even fall in love – by answering a series of increasingly intimate questions.

Catron described how in 2014 she and an acquaintance went on a date together. During the evening, they took turns asking and answering 36 questions. Before that meeting the pair both admitted to a slight mutual attraction, but the exercise changed this fairly dramatically.

Within weeks they had developed strong feelings for each other. The following year they moved in together, had children in 2021 and in 2025, more than a decade after their first date, they got married – and the 36 questions were included in a bowl at the reception bar.

The idea behind the 36 questions is simple enough – that by answering a series of intimate questions, two people become vulnerable and develop a close connection. But can the 36 questions really cause two people to fall in love?

In the 1990s, US psychologist Arthur Aron and his colleagues developed a sharing game that could be used to develop feelings of closeness between strangers. They wanted to provide researchers with a fast track to developing closeness in the lab, for studies involving participants who didn’t know each other.

The task is simple. Two strangers sit across from each other and take turns asking and answering 36 questions arranged in three sets. The task takes about 45 minutes to complete, with the questions becoming increasingly intimate and personal.

One question from the first set asks the strangers to describe their perfect day, while a question from the final set asks them to describe whose death they would find most disturbing.

Why does it work?

The main mechanism that helps build closeness in the 36 questions is reciprocal self-disclosure. This is when sharing intimate information about oneself prompts the other person to share similarly intimate information about themselves.

Reciprocal self-disclosure is an important part of relationship development. When people engage in reciprocal self-disclosure, they signal to each other that they’re willing to be responsive and share their vulnerabilities. In turn, this process helps to build mutual trust and liking, leading to greater feelings of closeness and intimacy.

Imagine that, over the course a conversation, I share with you that I’ve been struggling with my mental health. In sharing this information, you infer that I trust you and that I want to have an authentic, honest and meaningful relationship with you. This, in turn, might encourage you to share something intimate about your own mental health, which encourages deeper trust and connection between us.

What about romantic love?

But can the 36 questions really cause people to fall in love? In the original study, Aron and his co-researchers suggested that the 36 questions – sometimes called the “fast friends procedure” – could create real feelings of “interpersonal closeness” between strangers.

To test this, they randomly assigned strangers to take part in the fast friends procedure or to a small-talk exercise, which also included 36 questions but that did not increase in intensity over the sets. In a series of studies, Aron and his fellow researchers found that participants who’d completed the fast friends task felt closer to each other than those who had engaged in small talk.

A 2021 study found that participants engaging in the fast friends task not only felt closer than those who engaged in small talk, but also felt greater liking for their partners, believed their partners were more responsive, enjoyed the interaction more and had more fun.

However, Aron and his co-researchers also cautioned that the fast friends procedure does not produce feelings of loyalty, dependence or commitment between strangers – key ingredients for love. The procedure also does necessarily produce respect for the other person, which takes time to develop, nor does it produce feelings of passion, romance and physical and sexual attraction.

Although the fast friends procedure might not cause strangers to fall in love, it could help existing couples maintain their feelings for each other.

In studies where existing couples take part in the procedure with other couples they haven’t met before, the participants later report greater closeness to the couples they interacted with. But they also report greater closeness to and passionate love for their own partners.

The procedure could actually help foster loving relationships of all kinds. One group of researchers adapted the 36 questions to make them suitable for children aged eight to 13 and their parents. When the researchers asked parents and their children to take turns asking and answering the question, the children seemed to end the task feeling more loved.

The fast friends procedure also shows promise in developing closeness outside the lab and in different circumstances. In educational settings such as schools and universities, the task seems to be both an effective ice-breaker and a way to promote closeness and friendship formation. There’s even some evidence that tasks that promote closeness could increase productivity and creativity among team members working together.

The fast friends procedure could also be used to reduce prejudice and stigmatising views. In a 2015 study, heterosexual people took part in the fast friends task with a stranger who revealed they were gay or a lesbian.

These heterosexual participants reported stronger feelings of closeness and lower sexual prejudice at the end of the task compared to the start. Other studies have suggested that the procedure could also reduce racial prejudice and ageism.

So don’t let romantic couples usurp the 36 questions. If you’re spending Valentine’s day with friends, it could be a great way to deepen your bond.

Viren Swami 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. Valentine’s day: can 36 questions really change your love life? – https://theconversation.com/valentines-day-can-36-questions-really-change-your-love-life-273611

Source: The Conversation – UK – By Arshad Majid, Professor of Cerebrovascular Neurology, School of Medicine and Population Health, University of Sheffield

The vagus nerve has quietly shaped how our bodies function for thousands of years. Recently, it has moved into the spotlight, especially in wellness culture, where manipulating it is often described as a way to calm the body, reset the nervous system or even treat a wide range of conditions.

As someone who researches the vagus nerve in clinical settings, I think it is important to explain what it actually does, what we know so far and where claims run ahead of the evidence.

The vagus nerve is one of 12 cranial nerves that emerge directly from the brain. It is the longest of them, extending from the brainstem through the neck and into the chest and abdomen. Along the way it connects to the heart, lungs, gastrointestinal tract and liver. You cannot see or feel it directly, but it helps regulate everything from your heartbeat to digestion.

Its name comes from the Latin word for “wanderer”, reflecting its long route through the body. One of the most important things to understand is that it is primarily a sensory nerve. Roughly 80% of its fibres carry information from the body back to the brain, acting as a constant internal monitoring system. Only about 20% of the fibres send signals from the brain to the organs.

In practice, this means the vagus nerve continually informs the brain about what is happening inside the body, including heart rate, digestion and inflammation.

Rest and digest

The vagus nerve is a major component of the autonomic nervous system, which controls functions we do not consciously regulate. This system has two main branches.

The sympathetic nervous system drives the fight-or-flight response. It increases heart rate, raises blood pressure and prepares the body for action.

The parasympathetic nervous system has the opposite effect. It slows the heart, supports digestion and promotes a calmer physiological state. The vagus nerve is the primary nerve of this system and is often described as supporting “rest and digest” functions.

This connection explains why the vagus nerve is linked to relaxation and stress regulation. But the relationship is often oversimplified in popular culture.

Many techniques promoted online, such as slow breathing, humming, singing or splashing cold water on the face, are said to stimulate the vagus nerve. These activities do not switch the vagus nerve on or off.

What these activities can do is indirectly influence vagal activity by signalling that the body is safe. Slow breathing with a long exhale, for example, can reduce heart rate and promote a calmer state. You might notice a slowing pulse or a general sense of settling.

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Read more:
Conscious breathing can reduce anxiety and depression – tips for how to do it

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In some people this effect is clear. In others it is minimal. Importantly, strong evidence on how reliably these techniques influence vagus nerve activity is still limited, and responses vary widely between people.

Medical vagus nerve stimulation

In clinical medicine, vagus nerve stimulation has been used for decades. There are two main approaches.

The first is invasive vagus nerve stimulation. This involves surgically implanting a small pacemaker-like device in the chest, with wires wrapped around the vagus nerve in the neck. The device delivers regular electrical stimulation directly to the nerve.

In the US, this treatment is approved for drug-resistant epilepsy and depression. It can be effective but is used less often in the UK because it requires surgery, ongoing care and significant cost.

The second approach, and the focus of much current research, is non-invasive vagus nerve stimulation. Studies show that a small branch of the vagus nerve supplies part of the outer ear. By placing electrodes on specific areas of the ear, researchers can stimulate this branch electrically without surgery.

Brain imaging studies suggest this produces patterns of activity similar to those seen with implanted devices. This gives researchers confidence that similar neural systems are being influenced, even if it is not always possible to confirm that only the vagus nerve is involved.

Medical vagus nerve stimulation devices must meet strict safety and evidence standards. They have to demonstrate clinical benefit in trials and continue to be monitored after approval.

Consumer wellness devices are not held to the same standards. Many can be sold without strong evidence that they stimulate the vagus nerve or improve health outcomes. This does not mean they are necessarily harmful, but claims about their effects should be treated cautiously.

Stroke recovery

One of the most promising areas of research is stroke rehabilitation. After a stroke, many patients experience weakness in one arm that can affect independence for years.

In ongoing research, my colleagues and I are investigating whether non-invasive vagus nerve stimulation, paired with physical rehabilitation, can improve arm function after stroke. The aim is to enhance neuroplasticity, the brain’s ability to reorganise and form new connections, allowing healthy areas to take over lost functions.

This is being tested in a large clinical trial, in which neither participants nor researchers know who is receiving active stimulation until the end of the study. This helps reduce bias. If the results are positive, this approach could change how stroke rehabilitation is delivered.

Vagus nerve stimulation does not work the same for everyone. Some people experience headaches or worsening migraines. A small minority report changes in mood. In my own case, stimulation produces low mood, which is a recognised but uncommon response.

This variability is one reason why one-size-fits-all advice about stimulating the vagus nerve can be misleading.

The vagus nerve is not a cure-all. Most conditions involve multiple biological and psychological factors, and no single nerve explains or fixes them all.

It is, however, a crucial pathway linking the brain and body. As research progresses, we are likely to see more targeted, properly tested therapies using vagus nerve stimulation for specific conditions.

For now, the key message is caution without cynicism. The vagus nerve is real and important. The science is advancing. But meaningful benefits depend on careful research, appropriate use and an honest understanding of what the evidence does and does not yet show.

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Strange Health is hosted by Katie Edwards and Dan Baumgardt. The executive producer is Gemma Ware, with video and sound editing for this episode by Anouk Millet. Artwork by Alice Mason.

In this episode, Dan and Katie talk about social media clips via TikTok from drjoedamiani, ayuswellness and prettyspatricia.

Listen to Strange Health via any of the apps listed above, download it directly via our RSS feed or find out how else to listen here. A transcript is available via the Apple Podcasts or Spotify apps.

Arshad Majid receives funding from the National Institute of Health research (NIHR) EME Programme for the TRICEPS trial which is investigating tVNS in stroke recovery.

– ref. Vagus nerve stimulation: from TikTok tips to clinical trials – https://theconversation.com/vagus-nerve-stimulation-from-tiktok-tips-to-clinical-trials-274240

Source: The Conversation – UK – By Garbi Schmidt, Professor of Cultural Encounter Studies and a member of the inter-institutional research group on migration, Roskilde University

Few countries talk about “ghettos” the way Denmark does. For more than a decade, the term has shaped national debates about migration, integration and who truly belongs.

What began as a policy tool to identify struggling neighbourhoods has evolved into a social experiment in how to manage so-called “parallel societies”. These are predominantly migrant communities considered by politicians to be functioning separately from mainstream Danish life.

In 2010 the then government created a “ghetto list”. This list ranks public housing areas with more than 1,000 residents where unemployment levels and crime rates are higher than average. These areas are also ranked on income and education levels, along with whether more than half of the residents come from non‑western countries.

Over the years, these areas have become shorthand for failed integration. Danish politicians use the list as a roadmap for intervention: tearing down apartment blocks, forcing long-term tenants to relocate. The goal, they say, is to “mix” populations and prevent segregation.

While the government replaced the official term “ghettoområder” (ghetto areas) with “parallelsamfundsområder” (parallel-society areas) in 2021 to reduce stigma, the criteria and policies affecting these neighbourhoods have largely stayed the same.

The first ghetto

For anyone outside Denmark, this language of “the ghetto” or “parallel societies” can sound unsettling. In most European countries, the word still evokes a dark past. From medieval Jewish quarters, to the Nazi-era ghettos where Jews were confined before being deported to death camps – the word ghetto has such a complex history.

Modern housing estates were once a point of pride in the Danish welfare model – clean, affordable and surrounded by green space. So why use such a charged term to describe them?

As part of my research, I look at the historical development of the ghetto in Denmark and Danish culture, and how this has changed over the years.

Indeed, it was back in 1692 when the idea of the ghetto first emerged in Denmark. This was after police constable Claus Rasch proposed confining the city’s Jewish population – of which there were very few – to a designated district. In a long letter to King Christian V, he suggested that all Jews be moved to the Christianshavn area.

There, he argued, they could continue their businesses, but their daily lives should be closely regulated so they would not disturb their Christian neighbours or cause “a scandal”.

The Jewish quarter Rasch imagined strongly resembled the ghettos across Europe that had existed for more than 150 years. Such ghettos were established specifically to enforce a clear boundary between Christians and Jews. And their creation was driven by prejudice and fear.

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Read more:
Think twice before copying Denmark’s asylum policies

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The answer from the king was a firm no. But a little more than two centuries later, in 1908, Danish newspapers began writing about a ghetto in a squalid part of Copenhagen. This ghetto had, the press reported, been established by Russian Jews in the slum then existing in the streets just east of Kongens Have, in the inner city of the capital.

Inhabitants of this ghetto included Jewish immigrants who had fled the Russian empire due to religious and political persecution, along with others who wanted to find jobs and a better life. Emigration to North America was the final goal. A life in the slums of Copenhagen was only seen as a stop on the way.

Danish newspapers wrote with a mix of curiosity and excitement about the new “exotic” residents, who looked different and spoke Yiddish and Russian. Though these articles didn’t encourage people to visit the ghetto for a Sunday outing.
Quite the opposite. The area was poor and considered to be full of people with bad morals. Crime, drunkenness and suspicious political ideas were all part of its reputation. In other words, the ghetto was seen as dangerous.

Building division

Today’s “ghetto” or parallel society policies are built on that same instinct: that certain groups must be managed or dispersed to preserve cohesion.

Officially, the Danish government says it wants to break down parallel societies and promote integration. But in practice, the strategy has meant displacement. Families who have lived in the same neighbourhoods for decades are being moved, sometimes against their will, to prevent “concentrations” of non-western residents.

In 2024, the European Court of Justice (ECJ) ruled that Denmark’s housing policy – used to reshape these districts – amounted to racial discrimination. And at the end of last year, the ECJ said the legislation may be unlawful.

As Britain’s Labour government looks to Denmark for inspiration on asylum and migration reform, it’s worth paying attention to this parallel story. Denmark’s housing and asylum systems are two sides of the same coin: both built on the idea that tighter control creates cohesion.

But the Danish experience suggests something different – that in trying to dismantle “parallel societies”, the country may be building new divisions of its own.

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This article was commissioned as part of a partnership between
Videnskab.dk and The Conversation. You can read the article in Danish here.

Garbi Schmidt has received funding from the Carlsberg Research Foundation

– ref. What the troubling use of the term ‘ghettos’ reveals about Denmark’s attitude towards immigration – https://theconversation.com/what-the-troubling-use-of-the-term-ghettos-reveals-about-denmarks-attitude-towards-immigration-268581

Source: The Conversation – UK – By Natalia Rodríguez Vicente, Lecturer in Translation & Interpreting Studies, University of Essex

The Super Bowl halftime show is one of the most watched cultural events in the US. Every year, tens of millions of viewers tune in, many of them less for the sport than for the spectacle. That reach makes halftime a rare moment in which ideas about national identity and belonging are staged for a global audience.

At the 2026 Super Bowl in Santa Clara, Puerto Rican artist Bad Bunny delivered a halftime performance almost entirely in Spanish and packed with carefully staged symbolism. To understand what the show was communicating, it helps to look closely at four key moments.

1. Sugar cane fields

The show opened in a landscape of sugar cane fields and performers dressed as jíbaros (rural farmers) wearing traditional pava hats. These elements nod to the island’s agricultural roots and carry deep historical and cultural weight, as sugar cane points directly to the plantation economy, first under Spanish colonial rule and later reorganised under US governance.

2. Ricky Martin and Lo Que Le Pasó a Hawái

Ricky Martin is a Puerto Rican singer best known internationally for hits like Livin’ la Vida Loca. Instead of performing one of his global anthems, he sang an excerpt from Bad Bunny’s song Lo Que Le Pasó a Hawái, which frames Hawaii as a cautionary tale for Puerto Rico, warning against the consequences of over-tourism and gentrification:

Quieren quitarme el río
Y también la playa.
Quieren el barrio mío
Y que abuelita se vaya.

No, no suelte’ la bandera
ni olvide’ el lelolai.
Que no quiero que hagan contigo
lo que le pasó a Hawái.

They want to take my river,
and want the beach as well.
They want my neighbourhood,
and want Grandma gone.

No, don’t let go of the flag,
and don’t forget the lelolai.
As I don’t want them to do to you
what they did to Hawaiʻi.

The lyrics trace loss as a gradual process that begins with land and natural resources (“the river” and “the beach”), then moves inward to community space (“my neighbourhood”), family continuity (“grandma”), and cultural memory itself (“lelolai”, a traditional refrain), urging listeners not to “let go of the flag”, as a symbol of identity.

3. Electricity poles sparking

The staging of jíbaros climbing sparking electricity poles, suggesting overload and failure, during El Apagón, Bad Bunny’s protest song about chronic power outages on the island, can be read as a visual reference to Puerto Rico’s fragile power grid following Hurricane Maria.

According to the latest data from the US Energy Information Administration, Puerto Rico experienced an average of around 27 hours of power outages per year between 2021 and 2024. By contrast, customers in the mainland US typically had about two hours of outages per year. The poles thus functioned as signs of uneven material conditions.

4. A continental roll call after God Bless America

The performance closed with Bad Bunny saying: “God Bless America” followed by a roll call of countries across South, Central and North America, as well as parts of the Caribbean. The sequence challenged a familiar assumption about who counts as “America”. In everyday US English, America is often used as shorthand for the United States as in Donald Trump’s slogan “Make America Great Again.” Across much of Latin America, América refers to the continent.

Why the symbolism matters

These four moments form one narrative: the sugar cane fields root the performance in Puerto Rico’s colonial history. Ricky Martin’s lyrics name the risk of cultural erasure. The electricity poles tie questions of identity to material inequality. Finally, the roll call after God Bless America expands the frame outward, celebrating the continent as a shared, plural space.

The show has provoked strong reactions, including Donald Trump dismissing it as “absolutely terrible, one of the worst, ever”.

On the biggest stage in US popular culture, the performance pushed Latin visibility at the highest mainstream level. Against the scale of the spectacle, and the controversy it provoked, a message glowed quietly in the background: “The only thing more powerful than hate is love.”

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Natalia Rodríguez Vicente 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. Four symbolic moments in Bad Bunny’s Super Bowl halftime show – https://theconversation.com/four-symbolic-moments-in-bad-bunnys-super-bowl-halftime-show-275527