Trump claims his pollution rollback will save Americans money – but climate change is raising household costs

Source: The Conversation – UK – By Meilan Yan, Senior Lecturer in Financial Economics, Loughborough University

NadyGinzburg/Shutterstock

Climate change is usually assessed in scientific terms – rising temperatures, sea levels and carbon emissions. But increasingly, it can also be measured in household bills – higher insurance premiums, steeper energy charges and growing costs to protect homes, travel and health. So when US President Donald Trump said recently that abandoning a key government ruling on greenhouse gases would make cars cheaper for Americans, he was focusing on a tiny piece of a huge picture.

That is because climate change is not a local problem that hits one place at a time. It is increasingly a widespread financial risk, pushing on several parts of household finances at once. When risks become systemic, people cannot simply “insure it away” or plan around it.

When Trump announced he was revoking the US’s 2009 “endangerment finding”, which set out how greenhouse gas buildup harms human health and wellbeing, he said the move would save Americans “trillions of dollars”.

But climate change shows up directly in household budgets as pressures converge. These pressures could include insurance becoming unaffordable or even unavailable, which can then have knock-on effects on property values. On top of that, utility costs can creep up, wages may become less reliable, and retirement savings are exposed to climate-driven shocks.

For many families, their home is their largest financial asset. But climate risk is increasingly being priced into property markets. Research suggests that in the United States, homes exposed to flood risk may be overvalued by between US$121 billion and US$237 billion (£89 billion and £174 billion). The First Street Foundation, an independent climate risk research organisation, estimates that climate risk could wipe out as much as US$1.47 trillion in US home values by 2055.

In the UK, evidence shows that house prices in English postcodes affected by inland flooding fell by an average of 25% compared with similar non-flooded areas. Coastal flooding in England has been associated with price reductions of roughly 21%. The Environment Agency estimates that one in four homes in England could be at risk of flooding by the middle of the century.

Insurance is expensive – or unavailable

Many governments have tried to prevent climate risk from pricing people out of insurance by creating schemes of last resort. These government-backed initiatives keep policies available when the market would otherwise withdraw. But this safety net is now under growing financial strain.

In the US, the National Flood Insurance Program (NFIP) has accumulated more than US$22 billion in debt to the US Treasury after repeated borrowing to cover claims.

Meanwhile, in the UK, Flood Re was designed to buy time for adaptation while keeping flood insurance affordable. Yet rising claims have driven up reinsurance costs by around £100 million for 2025/26. France also had to increase the mandatory surcharge on its national “Cat Nat” natural catastrophe scheme from 12% to 20% from January 2025 to maintain financial stability.

Climate change affects households even if they do not own property. As utilities invest in stronger, more resilient infrastructure, those costs are usually recovered through higher standing charges and tariffs. In other words, the price of adaptation is quietly passed on through monthly bills. In California, for example, wildfire-related grid upgrades added 7% to nearly 13% to household energy bills in 2023.

The same logic applies to cars. Rolling back US vehicle emissions rules is being sold to American consumers as cutting US$2,400 off the price of a new car. But that sum isn’t a cheque to ordinary Americans. Carmakers are not required to pass the saving on, petrol drivers can end up paying more at the pump, and EVs still come with a high upfront price tag.

In reality, the figure is best understood as an estimated reduction in manufacturers’ compliance costs, not a guaranteed discount at the dealership.

Climate change doesn’t only put pressure on household budgets. It also threatens the thing many families rely on most: a steady pay cheque. Large parts of the economy worldwide still depend on work that happens outdoors from agriculture and construction to tourism, deliveries and logistics. The 2022 California drought cost farming around US$1.7 billion in revenue and nearly 12,000 job losses.

There are also direct health costs. The International Labour Organization warns that climate hazards expose workers to a “cocktail” of risks, including heat stress, air pollution, ultraviolet radiation and physical injury.

It estimates that 2.4 billion workers around the world could be exposed to climate-related health hazards. Excessive heat already affects about 70% of the global workforce, contributing to 18,970 work-related deaths and roughly 23 million workplace injuries each year.

Climate change is increasingly seen by regulators and investors as a systemic risk that can undermine the pensions people rely on in retirement. Risk management technology firm Ortec Finance warns that failing to transition to a low-carbon global economy could reduce pension fund returns worldwide by around 33% by 2050.

Physical risks (floods, heatwaves and storms) can damage assets and disrupt productivity. Transition risks (policy shifts and sudden repricing of carbon-intensive assets) can hit valuations. Together, they weaken the performance of equities, property and infrastructure.

When climate risk is systemic, there’s no bargain to be made: short-term “savings” don’t reduce household costs, they are repaid soon through higher bills. Rather than driving up the cost of living, climate policy helps to stop climate shocks from raising prices even faster.

The Conversation

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

– ref. Trump claims his pollution rollback will save Americans money – but climate change is raising household costs – https://theconversation.com/trump-claims-his-pollution-rollback-will-save-americans-money-but-climate-change-is-raising-household-costs-276201

Can a psychedelic-induced mystical experience really improve your mental health?

Source: The Conversation – UK – By Michiel van Elk, Associate Professor, Cognitive Psychology, Leiden University

Yavuz Meyveci/Shutterstock.com

Mystics once spent years meditating in caves in search of transcendence. Today, a growing number of people believe something similar can be reached in a single afternoon with the help of a psychedelic drug. Swallow a capsule of psilocybin or take a carefully supervised dose of LSD and you may encounter what many describe as one of the most meaningful experiences of their lives.

Modern clinical trials appear to support this. Several studies suggest that the intensity of a “mystical-type experience” during a psychedelic session predicts the degree of improvement in depression, anxiety or addiction. A recent review, for example, reports a consistent statistical link between mystical experiences and improved mental health.

It is an enticing idea: that healing comes through a profound encounter with unity, sacredness or ultimate reality. But do we really need mystical experiences to get better?

To understand why this question matters, it helps to step back. Long before psychedelics entered psychiatry, philosophers and theologians were fascinated by mystical states. In the early 20th century, the psychologist William James argued in his book The Varieties of Religious Experience that mystical states should be judged “by their fruits, not by their roots” – meaning by their effects on people’s lives rather than by debates about their metaphysical truth.

Others, including the British writer on Christian mysticism Evelyn Underhill and the philosopher of religion Walter Stace, developed what later became known as “perennial philosophy”: the idea that a common core experience lies at the heart of the world’s religions.

This way of thinking has quietly shaped modern psychedelic science. In 1962, the psychiatrist Walter Pahnke conducted the Good Friday Experiment, giving theology students psilocybin in a church. Many reported experiences that were strikingly similar to those described by classical mystics.

Around the same time, British-born psychiatrist Humphry Osmond – who coined the word “psychedelic” – developed treatment approaches designed to induce powerful “peak experiences” that could trigger lasting psychological change.

Today, large clinical trials at universities such as Johns Hopkins and Imperial College London have revived this approach. Researchers routinely measure whether participants have had a “mystical-type experience” using a standardised questionnaire known as the mystical experience questionnaire, or MEQ.

Participants are asked to rate statements such as “I had an experience of unity with ultimate reality” or “I had an experience which cannot be described adequately in words”. The higher the score, the more likely someone is classified as having had a full mystical experience.

But this raises a conundrum. If an experience is supposedly “ineffable” – beyond words – how accurately can it be captured by ticking boxes on a survey?

Some critics argue that the MEQ builds in assumptions drawn from perennial philosophy. By asking about “ultimate reality” or “sacredness”, it may reflect a particular interpretation of mystical experience rather than a neutral description. As one analysis notes, there is a risk that the scale partly reproduces the very theory it aims to test.

Expectations may further complicate matters

Many participants in psychedelic trials arrive already primed for transcendence. They have read glowing media coverage, listened to podcasts or watched documentaries promising life-changing breakthroughs. Research shows that such expectations can significantly shape subjective drug experiences.

My colleagues and I saw just how powerful suggestion can be in a study nicknamed “tripping with the god helmet”. Participants wore a sham brain-stimulation device that we described as capable of activating their “mystical lobes”. In reality, no stimulation was delivered. Yet nearly half reported mystical-type experiences, some describing them as deeply meaningful.

In another experiment, placebo psychedelics administered in a carefully staged environment – complete with evocative music and imagery – produced strikingly similar reports. These findings suggest that context and expectation are not minor side notes. They can play a central role in shaping what people experience.

None of this means psychedelic therapy is “just a placebo”. The drugs clearly alter brain activity and experience in powerful ways. But it does raise the possibility that mystical experiences are not the sole or even primary driver of therapeutic change.

After all, correlation does not equal causation. A large body of psychiatric research warns against assuming that because two things occur together, one must cause the other. Mystical experiences may simply be one visible marker of other processes, such as increased emotional openness, the development of new neural connections or changes in entrenched beliefs.

Super placebos

Some researchers have even described psychedelics as super placebos: substances that amplify expectancy effects rather than bypass them. That may sound dismissive, but it points to something important. Expectations, beliefs and meaning-making are not incidental to healing; they are often central to it.

When used carefully in structured settings, psychedelics may act less like magic bullets and more like catalysts. They intensify whatever psychological processes are already underway.

For some, that may include feelings of unity and transcendence. For others, it may involve confronting grief, fear or long-buried memories. Stanislav Grof, a pioneer of psychedelic therapy, once compared these substances to microscopes for the mind – tools that reveal otherwise hidden aspects of experience.

The key point is this: while mystical experiences often go hand in hand with improvement, they may not be essential. And on their own, they may not be enough to create lasting change.

Lasting therapeutic benefits appear to emerge from a web of interacting factors: brain changes, emotional breakthroughs, supportive settings, skilled therapists and the integration work that follows the session. Focusing too narrowly on whether someone scored above a mystical threshold risks oversimplifying a complex process.

The psychedelic renaissance has opened exciting possibilities for mental health treatment. But if the field is to mature, it may need to move beyond the assumption that transcendence is the secret ingredient.

The future of psychedelic therapy may depend less on chasing mystical peaks and more on understanding the conditions that help people translate intense experiences – mystical or otherwise – into durable, meaningful change.

The Conversation

Disclosuree Michiel van Elk receives funding from the Netherlands Organization for Scientific Research (NWO; grant id# VI.Vidi.191.107). He is affiliated as board member with Open Foundation (https://open-foundation.org).

– ref. Can a psychedelic-induced mystical experience really improve your mental health? – https://theconversation.com/can-a-psychedelic-induced-mystical-experience-really-improve-your-mental-health-274330

Nigel Farage unveils ‘shadow cabinet’ team – but why did only three of his MPs get jobs?

Source: The Conversation – UK – By Richard Johnson, Senior Lecturer in Politics, Queen Mary University of London

Since May 2025, Reform UK has led every poll of general election voting intention. Were an election held today, Reform would be poised to form a government. It would probably be a majority government, too. A party needs 326 seats in the House of Commons to form a majority, and Electoral Calculus currently estimates Reform’s range of seats between 319 and 418 MPs.

This puts Reform in a unique position in British politics. It could potentially form a majority government without ever having been the official opposition. Since 1922, the official opposition has been formed by one of two parties: Labour or the Conservatives. Even during the second world war, Labour remained the official opposition, even though Labour MPs sat in the wartime coalition government.

As part of his bid for government, Nigel Farage has announced what he is calling his “shadow cabinet”. The announcement, however, contained several curiosities.

Only four out of eight Reform MPs were given jobs – far fewer than the number of cabinet posts in government. Farage would be prime minister in a Reform government with Richard Tice as his deputy and head of a new department of business, trade and energy. Robert Jenrick will be Reform’s economic spokesman – and is being called its “shadow chancellor”. Suella Braverman takes the education portfolio.

This is far from the full line up of a cabinet and several key positions are missing – notably foreign secretary. And yet there were no jobs for Reform MPs Lee Anderson, Sarah Pochin, Andrew Rossindell and Danny Kruger.

Meanwhile, Farage has appointed someone to his “shadow” cabinet who does not sit in parliament at all: Zia Yusuf, who takes the home affairs brief. This decision gives a hint that the Reform shadow cabinet is a different beast than the “official” shadow cabinet. It’s a sign that the top team will be focused more on the party’s public presentation than parliamentary scrutiny.

Does this mean anything?

Britain’s parliamentary system assumes a binary structure. Each government minister is shadowed by a member of the official opposition. These “shadow ministers” stand across from the minister at the dispatch box. They are responsible in the chamber for scrutinising and challenging the minister and government legislation. This adversarial pairing is central to the system of political accountability at the heart of the British constitution.

As leader of the opposition, Kemi Badenoch is entitled to ask the prime minister six questions each week at prime minister’s questions (PMQs), the most hotly watched 30 minutes of the weekly parliamentary timetable. This gives Badenoch an opportunity to grab the political limelight in a way that few other opposition politicians can.

Over the years, many Leaders of the opposition have made use of this position to great effect, especially since the introduction of television cameras in parliament in 1989. John Smith, Tony Blair and David Cameron were all particularly good performers at PMQs as opposition leaders.

Reform’s current parliamentary position deprives it of this prominence. At the 2024 general election, it finished third in vote share but only seventh in seats. Through defections and byelections it now has eight MPs, making it the fifth largest party in the House of Commons – one seat behind the SNP.

Reform figures have complained about the disconnect between their polling strength and their parliamentary footprint. Nigel Farage briefly boycotted PMQs after failing to secure a guaranteed seat in the chamber. But Britain is a parliamentary democracy, not a polling democracy. In the Commons, what counts is seats won, not votes projected.

That said, if Reform sustains its polling lead as the next election approaches, voters will expect clarity about what a Reform government would look like. In Britain, unlike in the US, Cabinets are largely visible before an election. We generally know who will occupy the great offices of state should a party win. There can be post-election adjustments – Labour’s Emily Thornberry was cruelly removed from the frontbench immediately after the 2024 election – but the broad outline is usually established in advance.

It is not unheard of for smaller parties in parliament to announce something they call a shadow cabinet. The Liberal Democrats have pulled this stunt from time to time. In 2008, Liberal Democrat leader Nick Clegg announced his shadow cabinet, many of whom ended up in government after 2010 when the Lib Dems joined a coalition government with the Conservatives.

Practically speaking, a “shadow cabinet” from a third party confers no additional standing in parliament. The party may wish to encourage the “shadow” to attend debates relevant to their brief and to make interventions. But they do not speak from the dispatch box or enjoy the same parliamentary time and prominence as the official opposition.

Power sharing to win power

Nonetheless, this is a test of Nigel Farage’s leadership approach. It has been reported that “he has struggled to share power with others”. Farage’s re-entry to British electoral politics in June 2024 was predicated on him taking the reigns of Reform from Tice. He did not want to share the top job.

Farage has been ruthless in expelling Reform MPs whom he regards as a liability to the party and a threat to his leadership. He has also limited internal party democracy in the form of either candidate selections or policy formulation.

This has been both a strength and a weakness for Reform. Farage is undoubtedly Reform’s most recognisable figure and is one of the most charismatic people in British politics. His ruthless grip over the party has sometimes been merited in keeping Reform’s distance from more ethno-nationalist elements of the British right.

At the same time, it is impossible for a prime minister to have full control over every element of his party and government. To lead is to delegate. Farage’s announcement of his shadow cabinet was the first demonstration of that imperative, but in the months ahead there will be much more to do.

If Farage is serious about doing the unthinkable and leapfrogging from a minor parliamentary party to majority government in one election, then he is going to need to learn to share power. Power-sharing requires trust, and trust is not easily cultivated in a party composed largely of political defectors. Leading such a party requires not only discipline from the top, but confidence that those who have already turned their backs on one political team will remain loyal to another.

The Conversation

Richard Johnson 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. Nigel Farage unveils ‘shadow cabinet’ team – but why did only three of his MPs get jobs? – https://theconversation.com/nigel-farage-unveils-shadow-cabinet-team-but-why-did-only-three-of-his-mps-get-jobs-276106

Why it’s impossible for the Olympics to be politically neutral

Source: The Conversation – UK – By Gregory Krippa, PhD Candidate in Diplomacy & International Affairs, Loughborough University

As the 2026 Milano Cortina Winter Olympics in Italy play out, the International Olympic Committee (IOC) is once again insisting that any sport under its flag must remain politically neutral. The Olympic charter grounds this position in its fifth “fundamental principle of Olympism”, which states that sports organisations within the Olympic movement “shall apply political neutrality”.

Yet in recent years, athletes from Russia and Belarus have been excluded or tightly restricted, and calls have also been made to ban Israelis, Americans, and others. This raises the question: what, exactly, does “political neutrality” mean in today’s Olympic Games – and what purpose does it serve?

To start with, it’s obvious to most that the IOC cannot be “neutral” in the everyday sense of never getting involved. In 1992, athletes from the Federal Republic of Yugoslavia were not allowed to compete as Yugoslavia because of UN sanctions, and those who did compete did so under the Olympic flag as independent Olympic participants.

But the US faced no Olympic-wide ban after the 2003 invasion of Iraq, widely argued to be illegal under international law. If political neutrality means never making political decisions, then the IOC couldn’t work by definition, because deciding which countries are recognised and eligible to compete is inherently political.

The real question is not whether the IOC makes political decisions, but why it keeps insisting it does not take sides in political conflicts when, to many observers, its actions suggest otherwise.

Countries and organisations sometimes claim neutrality on principled grounds. In the 1980 Moscow Olympic Games, for example, 65 countries boycotted in response to the Soviet invasion of Afghanistan. Four years later, the Soviet Union and most of the Eastern bloc retaliated by boycotting the 1984 Los Angeles Games, citing political hostility and security concerns.

In both of these cases, the Games still went ahead. The IOC presidents at the time, Lord Killanin in 1980 and Juan Antonio Samaranch in 1984, appeared willing to bear the costs of lower attendance, prestige and fanfare in order to uphold the organisation’s claim to political neutrality, amongst other things.

Today, political neutrality increasingly serves a different role. Rather than expressing a clear position that the organisation is prepared to defend, neutrality is used to keep decisions deliberately vague. Instead of clear criteria that say what neutrality is, when it is required, and when it should be abandoned, the IOC responds to each crisis case by case, without explaining why similar conflicts produce different outcomes.

Sport and politics in the real world

This vagueness reduces the need to justify decisions, accountability and responsibility, all while arguing that it takes a principled position of neutrality. Ironically, “political neutrality” is so loosely defined that it is flexible enough to take sides in political conflicts, a strategic ambiguity not uncommon in international politics.

Admittedly, this may be a smart strategy from an organisational point of view. In early March 2022, the International Paralympic Committee (IPC), within 24 hours of saying Russian and Belarusian athletes would be allowed to compete at Beijing 2022 as neutrals, reversed course after several countries warned they would not compete.

The IPC probably lost some authority, and perhaps even legitimacy, from this reversal. Yet it begs the question where this leaves the concept of political neutrality and values in general, today.

Sport is often seen as a microcosm of society. Whatever happens in sport reflects society at large – and these Winter Olympic Games are no different. In this sense, neutrality in the IOC reflects a broader pattern we see in daily life – one law for the few, and another for the many, with “political neutrality” a convenient mask for taking sides while claiming not to. It appears to be “neutrality” when it benefits the right countries, and “politics” when it does not.

In these Winter Games, the IOC will speak the words of neutrality but think in terms of politics. Neutrality will be invoked to justify restrictions on some delegations or athletes, like Russia and Belarus, while resisting restrictions on others, like Israel and the US, and deflecting responsibility for explaining the difference.

After a week of competition, this double standard is evident. Russian and Belarusian athletes compete only as vetted “individual neutral athletes” without flags or anthems. Meanwhile, athletes from countries facing well-documented accusations of violating international law and human rights, like Iran, Israel, China, the US and others, participate under full national symbols.

The result is that these Winter Games, like many before them, are a stage where political conflict is managed in practice. Political neutrality today does not remove politics from sport; it is simply another way of reinforcing it.

The Conversation

Gregory Krippa 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 it’s impossible for the Olympics to be politically neutral – https://theconversation.com/why-its-impossible-for-the-olympics-to-be-politically-neutral-275336

The next cancer breakthrough may be stopping it before it starts

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

PeopleImages/Shutterstock.com

Cancer treatment follows a familiar pattern: doctors spot symptoms, diagnose the disease and start treatment. But scientists are now exploring a radical shift in how we tackle cancer. Instead of waiting for tumours to appear, they want to catch the disease decades before it develops.

This approach is called “cancer interception”. The idea is simple: target the biological processes that cause cancer long before a tumour ever forms.

Researchers are hunting for subtle early warning signs. These include genetic mutations that quietly build up in our cells, giving them advantages against our immune defences.

They’re also looking at precancerous lesions like moles or polyps, and early visible changes in tissue. All of these appear long before cancer becomes obvious.

Large genetic studies reveal that as people age, their bodies accumulate small groups of mutated cells called clones that grow silently. Scientists have studied this particularly well in blood. These clones can help predict who might develop blood cancers like leukaemia, and the genetics, inflammation and environmental factors strongly influence them.

Crucially, doctors can measure and track these changes over time. This opens up possibilities for early intervention.

A 16-year study followed around 7,000 women and uncovered how these mutations work. Some mutations helped clones multiply faster, while others made them particularly sensitive to inflammation.

When there was inflammation, these sensitive clones expanded. Breaking down these patterns helps researchers identify people with a higher chance of developing cancer later.

Not a sudden event

The research reveals something fundamental about cancer. It’s not a sudden event that instantly produces a tumour.

Instead, cancer develops through a slow, multi-step process with detectable warning signs along the way. These early signs could become powerful targets for stopping cancer before it starts.

Scientists are developing blood tests to spot cancer long before symptoms appear. These tests, called multi-cancer early detection tests (MCEDs for short), search for tiny fragments of DNA in the blood.

MCEDs work by looking for circulating tumour DNA, or ctDNA – DNA fragments that cancerous or precancerous cells release into the bloodstream. Even very early cancers shed this DNA, so the tests might detect disease long before it shows up on a scan.

The results so far look promising. MCEDs can boost survival rates through early detection, especially for colorectal cancer. When doctors diagnose colorectal cancer at stage one, 92% of patients survive five years. But when they catch it at stage four, only 18% survive that long.

Older man holding his stomach in agony.
If colon cancer is caught at stage one, most patients are still alive after five years.
sebra/Shutterstock.com

The tests aren’t perfect, though. They miss some cancers entirely, and positive results still need follow-up tests to confirm.

Even so, research suggests MCEDs could become crucial for catching cancers that usually go unnoticed until much later. The potential to save lives is significant.

Heart doctors already use a similar approach. They calculate a person’s risk using age, blood pressure, cholesterol and family history, then prescribe drugs like statins years before a heart attack happens.

Cancer researchers want to copy this model. They envision combining genetic mutations, environmental factors and MCED results to guide early cancer prevention.

But cancer differs from heart disease in important ways. Cancer doesn’t follow a predictable path, and some early lesions shrink or never progress.

There’s also the risk of over-diagnosis. Being told you’re at higher risk when you feel perfectly healthy creates anxiety.

Cancer prevention tools also vary widely in their effectiveness, unlike statins that work broadly across different cardiovascular risk groups. The risk-based model shows promise, but needs careful handling.

Treating cancer risk instead of cancer itself raises difficult ethical questions. When someone feels completely healthy, judging whether intervention will truly help them becomes harder.

There’s a danger of causing unnecessary worry or harm. Scientists warn that doctors sometimes overestimate benefits and underestimate risks, particularly for older adults.

MCED tests bring their own ethical concerns. Accuracy isn’t the only issue that matters.

The tests sometimes flag cancer when none exists, leading to follow-up scans and biopsies that patients don’t actually need. The anxiety from all of this carries a high cost, both for patients and the healthcare system.

If these tests are expensive or only available privately, they could make health inequalities worse. This concern hits hardest in low-income countries.

In the US, the medicines regulator is investigating how MCED blood tests should work. They’re examining how reliable the tests need to be and what follow-ups doctors should require to keep patients safe.

The UK is following suit. The National Cancer Plan for England, published on February 4, 2026, commits to providing 9.5 million extra diagnostic tests through the NHS each year by March 2029.

The plan also states that ctDNA biomarker testing will continue in lung and breast cancer. It will extend to other cancers if proven to be cost effective.

What all this shows is clear. Cancer doesn’t suddenly appear; it’s a steady process that begins decades earlier. Catching it before it grows could save countless lives. The question now is how to do that safely, fairly and effectively.

The Conversation

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

– ref. The next cancer breakthrough may be stopping it before it starts – https://theconversation.com/the-next-cancer-breakthrough-may-be-stopping-it-before-it-starts-275453

China has turned the page on its aggressive ‘wolf warrior’ diplomacy – except when it comes to Japan

Source: The Conversation – UK – By Lewis Eves, Lecturer in the School of Politics and International Relations, University of Nottingham

At the recent Munich Security Conference, China’s foreign minister, Wang Yi, delivered a rebuke of what he said were dangerous trends of militarism in Japan. In a panel discussion, he pointed out comments made in November by the Japanese prime minister, Sanae Takaichi, in which she suggested Japan could intervene militarily in the event of a Chinese attack on Taiwan.

Wang stressed that these remarks were a direct challenge to China’s national sovereignty, suggesting this was something his country would not accept. He warned of a “very dangerous development in Asia”, adding that Japanese people “should not let far-right extremists move and drag them down”.

Some observers have suggested that Wang’s remarks indicate a return to China’s “wolf warrior” approach to diplomacy, an assertive and jingoistic foreign policy strategy that was adopted by numerous Chinese officials and diplomats for several years beginning in the late-2010s. China switched away from this strategy around 2023 and sought to position itself as more of a global peacemaker instead.

Wang’s remarks in Munich did bear the hallmarks of wolf warrior diplomacy. But I think he also used his appearance at the conference to signal something greater in China’s diplomatic strategy: a desire to position itself as the beneficiary of the current turbulence in global politics.

The term “wolf warrior” stems from a 2015 Chinese war film, also called Wolf Warrior. The film follows a special forces soldier of the People’s Liberation Army, the armed wing of the Chinese Communist party (CCP), who fights and defeats a group of foreign mercenaries. It was followed by a second film in 2017.

The success of the franchise inspired so-called “wolf warriors” among China’s nationalist movement. These people called for Chinese officials to be more assertive in their foreign policy, threatening coercive action where they need to.

The relationship between the CCP and China’s nationalist movement is complex. However, the reliance of the CCP on the nationalist movement for support gave the movement – and, by extension, the wolf warriors – significant influence to pressure officials into pursuing a more assertive foreign policy.

This led to the development of wolf warrior diplomacy. Similar to the unapologetic use of force employed by the film’s titular character to battle foreign enemies, Chinese diplomats used threats to silence foreign criticism of China and its government. The idea was to portray strength to domestic and international audiences.

One example of wolf warrior diplomacy occurred in 2020. In response to the award of a Swedish literature prize to Gui Minhai, a human rights activist who is currently imprisoned in China on unsubstantiated “spying” charges, China’s ambassador to Sweden Gui Congyou publicly stated on Swedish radio: “We treat our friends with fine wine, but for our enemies we’ve got shotguns.”

Wang made a similar threat against Japan in Munich. When asked a question about the tensions between the two countries, he made reference to Japan’s history of violent expansion. He threatened: “If you [Japan] go back down the old road, it will be a dead end. If you try gambling again, the loss will be faster and more devastating.”

Level-headed strategy

Wang was a proponent of wolf warrior diplomacy at its height, and for him to be making threats at an international conference is reminiscent of China’s worryingly assertive foreign policy posture of the recent past. But his broader rhetoric in Munich reflected a level-headed diplomatic strategy.

In his keynote speech, Wang spoke of the need for the UN and for global cooperation and collaboration. He also called for greater European representation in the peace negotiations between Russia and Ukraine. And he framed recent US foreign policy as undermining international law, highlighting American interference in Venezuela as a key example.

Wang appears to have been trying to use an international event to position China as an alternative global leader to the US that is interested in upholding western institutions of international governance and law. In contrast to knee-jerk nationalism and jingoism as a hallmark of foreign policy, this speaks to a strategy that seeks to manoeuvre China into a position where it can court favour with the countries the US is antagonising.

This approach predates Wang’s speech and seems to be working. Even the UK, traditionally considered the closest US ally in Europe, has been forging new agreements with China in recent weeks. These include visa-free travel, intelligence-sharing and possible trade deals.

So, why then did Wang attack Japan in Munich? Tensions between the two nations are particularly tense at the moment. And, while it is hostile to foreign interference generally, China’s nationalist movement is specifically anti-Japanese.

Chinese nationalism draws heavily from the narrative of the “century of humiliation”, a period from 1839 to 1949 in which China was victimised by foreign powers. A particularly prominent example of this was the second Sino-Japanese war (1937-45), which resulted in the deaths of up to 20 million Chinese people.

There remains considerable animosity over this conflict in China. Given his wolf warrior background, the prevalence of anti-Japanese sentiment in China and the current tensions between China and Japan, Wang’s rhetoric towards Japan is unsurprising.

I suspect it reflects a combination of his personal views, pressure from China’s nationalist movement and compliance with the CCP’s official line on discussing the tensions with Japan. Yet, this should not distract from the broader view Wang gave of Chinese diplomacy and how China is positioning itself to benefit from the currently turbulent state of global politics.

The Conversation

Lewis Eves 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. China has turned the page on its aggressive ‘wolf warrior’ diplomacy – except when it comes to Japan – https://theconversation.com/china-has-turned-the-page-on-its-aggressive-wolf-warrior-diplomacy-except-when-it-comes-to-japan-276144

Critical mineral mining faces risks if local communities aren’t consulted enough: the case of lithium in Ghana

Source: The Conversation – Africa – By Clement Sefa-Nyarko, Lecturer in Security, Development and Leadership in Africa, King’s College London

Clean technologies depend on critical minerals such as lithium and cobalt. Over 65% of the world’s cobalt is mined in the Democratic Republic of Congo. Nearly 40% of the world’s manganese is mined in South Africa. Substantial deposits of lithium are found in Zimbabwe. Ghana is emerging as a miner of that mineral of lithium too.

What’s less well understood is how the supply chains of these minerals are assessed and managed. The dominant view is that only three players matter: the mineral-mining industry, the host state where the minerals are found, and the wider geopolitical equation.

But there’s a fourth piece of the puzzle: the role of communities.

I am an academic researching justice and equity in critical minerals governance and energy transitions. In a recent paper, I examined the role of communities and the presence or absence of a social licence to operate. In other words, community “approval” that allows a project to proceed.

I focused on Ghana’s emerging lithium sector. Communities here are already feeling livelihood and social pressures following the commercial discovery. My research shows that weak and opaque governance around critical-mineral projects create early friction between communities, companies and the state. I found that delays in legal and regulatory processes, exclusion from decision making, and inadequate compensation routinely disrupt livelihoods in lithium rich communities.

These governance failures heighten local tensions. When communities feel sidelined or harmed, the risk of social conflict rises sharply. It can result in project delays, shutdowns and higher costs for both states and companies. These pressures are not incidental. They directly affect the stability of global supply chains.

I argue that effective risk governance must move beyond geopolitics. It must embed the fundamentals of social legitimacy. These include:

  • free, prior and informed consent

  • fair and transparent benefit-sharing

  • sustained, meaningful engagement with affected communities.

Without these basics, no amount of technological innovation or diplomatic negotiation can secure the minerals needed for the energy transition.

As global competition intensifies over access to strategic minerals, the governance of mining sites in the global south becomes important for supply chain assurance.

Why local participation matters

My argument is that local participation is one of the strongest predictors of whether mining projects gain or lose legitimacy, and therefore whether supply chains remain stable or face disruption.

When communities are involved early and meaningfully in decisions about land access, water use, environmental safeguards and compensation, they are more likely to see mining not as an imposed threat but as a negotiated partnership. This reduces uncertainty, builds trust and lowers the likelihood of conflict. Those conditions are essential for predictable mineral flows.

Research in sustainable mining consistently shows that communities are not passive recipients of mining impacts. They are active agents whose consent, cooperation or resistance can determine the lifespan of entire supply chains. Participation creates the space for communities to articulate their needs. It shapes benefit‑sharing mechanisms and ensures that mining does not undermine local livelihoods. When people have no voice in decisions that affect their land, water or social well-being, grievances accumulate and protests, legal challenges or operational blockages become far more likely.

Findings from my research further demonstrate that participation is a practical risk-management tool. It is not a symbolic gesture. In mining communities, weak engagement and unclear communication about land restrictions and compensation create perceptions of dispossession. They intensify tensions that threaten project timelines. Conversely, when engagement is consistent and meaningful, concerns are addressed early. This reduces the likelihood of costly shutdowns and strengthens the long‑term security of mineral supply chains.

Participation anchors mining projects in social legitimacy. It shifts extraction from something done to communities towards something negotiated with them. It turns potential flashpoints into points of cooperation. In a world where a single protest can disrupt global supply chains, community participation is no longer optional. It is a fundamental safeguard for the energy transition.

Way forward

Reducing the risk of supply-chain disruptions is not easy, but there is a clear path to it.

First, future global meetings like the COP climate summits and UN processes should explicitly include critical minerals, sustainable mining and community protections as formal agenda items. This will close the long-standing governance gap that leaves mineral supply chains exposed.

Second, international bodies should develop shared indicators for meaningful participation, benefit-sharing and community legitimacy. Social licence must be treated as a material risk factor that can halt mines and disrupt global markets.

Instead of resisting regulation, mineral-producing countries should help shape global environmental, social and governance expectations. They should reflect local priorities, environmental conditions and value-addition goals, while ensuring stable, responsible mineral flows.

Governments and companies should establish shared governance arrangements covering water use, land access, benefit-sharing and grievance processes. This will build trust early and prevent local conflict.

Also, mineral-rich countries should align on minimum social and environmental standards, free, prior and informed consent requirements, and value-addition policies. These will ensure diversification does not encourage weak oversight or exploitation.

The Conversation

Clement Sefa-Nyarko receives funding from UK Research and Innovation (UKRI) through a Future Leaders Fellowship for a project on justice in critical minerals governance and energy transitions. He also occasionally consults for Participatory Development Associates on international development in Africa, but this work is not related to mining.

– ref. Critical mineral mining faces risks if local communities aren’t consulted enough: the case of lithium in Ghana – https://theconversation.com/critical-mineral-mining-faces-risks-if-local-communities-arent-consulted-enough-the-case-of-lithium-in-ghana-275723

Pourquoi Tesla est davantage valorisée en bourse que BYD

Source: The Conversation – in French – By Chafik Massane, Enseignant-Chercheur en Finance, INSEEC Grande École

La finance a d’autres logiques que la rationalité. Et s’il fallait chercher du côté des croyances ? Gguy/shutterstock

Malgré son retard industriel sur le leader mondial BYD, l’action Tesla ne cesse de grimper. Depuis le mois d’avril 2025, le constructeur phare des voitures électriques aux États-Unis est passé derrière son concurrent chinois en termes de ventes. Comment expliquer cet écart entre valorisation boursière et chiffre d’affaires ?


Pendant longtemps, Tesla a incarné l’avant-garde industrielle du véhicule électrique. Pourtant, le paysage concurrentiel a profondément changé. Les constructeurs chinois, BYD en tête, mais aussi NIO et XPeng, ont pris une avance désormais mesurable en volumes, en parts de marché et en maîtrise des coûts. Depuis avril 2025, BYD est devenue le leader mondial des ventes de véhicules électriques.

Paradoxalement, cette montée en puissance industrielle ne s’est pas traduite par un rééquilibrage équivalent en Bourse : Tesla conserve une valorisation exceptionnellement élevée, BYD est en chute.

Cours de l’action de Tesla depuis 2016.
Boursorama

Ce décalage soulève une question centrale de finance de marché : que valorisent réellement les investisseurs chez Tesla ?

Cours de l’action BYD depuis 2016.
Boursorama

Retard industriel sur BYD

La Chine est aujourd’hui le premier marché mondial du véhicule électrique. En 2024, 10,9 millions de véhicules électrifiés y ont été vendus, soit 47,6 % des ventes totales de voitures. C’est énorme. Des constructeurs comme BYD écrasent la concurrence avec 4,3 millions de véhicules vendus en 2024.

Selon les données de la China Association of Automobile Manufacturers (CAAM) et de l’Agence internationale de l’énergie (IEA), BYD domine largement ce marché, avec des volumes de ventes très supérieurs à ceux de Tesla. À titre de comparaison, BYD a vendu environ 1,7 million de véhicules électriques à batterie (BEV) en 2024 et environ 2,25 millions en 2025.

Véhicules livrés par Tesla et BYD.
Morningstar

Au-delà des volumes, l’avantage des constructeurs chinois repose sur une intégration verticale poussée : BYD produit ses propres batteries, moteurs et logiciels embarqués, ce qui lui permet de réduire ses coûts de production et de mieux contrôler la qualité. Cette maîtrise interne lui confère des marges plus élevées et une plus grande flexibilité face à la concurrence. Sur ces dimensions clés, Tesla n’est plus le leader incontesté qu’il était il y a dix ans. Ces avantages de coûts faibles ont permis à BYD une marge brute nettement supérieure à celle de Tesla.

Valorisation boursière toujours hors norme

Malgré ce décrochage industriel relatif, Tesla continue d’afficher une valorisation boursière très supérieure à celle de ses concurrents chinois. Cette survalorisation apparaît clairement lorsqu’on compare Tesla à BYD.

Le multiple de valorisation sur le graphique confirme ce paradoxe. Le ratio « valeur de l’entreprise/résultat d’exploitation » indique combien les investisseurs paient pour chaque euro de profit généré par l’entreprise avant impôts et intérêts. Un ratio élevé, comme pour Tesla, montre que le marché valorise l’entreprise beaucoup plus que ce que ses profits actuels justifieraient, en misant sur sa croissance et ses projets futurs. Ce ratio reste nettement supérieur à celui de BYD, sauf pour l’année 2022 où BYD paraît « plus chère » que Tesla.

En réalité, ce résultat est dû à l’écrasement temporaire du résultat d’exploitation suite aux investissements massifs de BYD. En effet, en 2022, BYD a massivement investi dans ses capacités industrielles : la valeur de ses immobilisations corporelles a atteint 131,88 milliards de yuans (environ 16,13 milliards d’euros), soit une hausse de plus de 115 % par rapport à début 2022, ce qui s’est traduit par plus de 95 milliards de yuans (11,6 milliards d’euros) d’investissements dans les lignes de production et les usines sur une seule année.

Anticipations de domination future

Ce décalage entre performances industrielles et valorisation boursière s’explique en grande partie par le rôle des anticipations.

Nos travaux de recherche en finance de marché, montrent que la valeur d’une entreprise cotée en bourse peut se détacher de ses résultats financiers immédiats. La bourse ne valorise pas seulement les bénéfices actuels, mais aussi les anticipations des investisseurs sur l’évolution future des flux de trésorerie et des profits.

Tant que le récit stratégique reste crédible, les investisseurs sont prêts à payer un prix d’action élevé, ce qui peut maintenir une valorisation totale durablement élevée. Tesla illustre ce mécanisme : sa valorisation reflète surtout les attentes du marché quant à son potentiel futur, plutôt que ses résultats du moment.

Bénéfice de Tesla et de BYD.
Morningstar

Tesla est valorisée non seulement comme un constructeur automobile, mais comme un acteur technologique aux options stratégiques multiples – intelligence artificielle, conduite autonome, robotique, etc. Cette perception nourrit une prime boursière persistante.

L’évolution de long terme du cours de l’action Tesla permet d’illustrer ce phénomène. Malgré des phases de pression sur les marges, de concurrence accrue et de ralentissement industriel, la trajectoire boursière reste exceptionnellement élevée comparée aux standards du secteur automobile. En février 2025, une action d’échange à 428,60 dollars états-uniens, soit 360,59 euros.

Un mirage boursier ?

Tesla n’est pas un cas isolé dans l’histoire financière.

Les marchés ont souvent accordé des primes élevées aux entreprises perçues comme porteuses d’une rupture majeure, comme Amazon, dont la valorisation a longtemps dépassé ses profits immédiats en pariant sur sa domination future dans la logistique et le cloud.

Ce phénomène n’est pas nouveau : depuis leurs débuts, les marchés financiers ont connu des épisodes similaires, comme la tulipomanie aux Pays-Bas au XVIIᵉ siècle, où le prix d’un bulbe de tulipe pouvait atteindre celui d’un petit château, ou la bulle de la Compagnie des mers du Sud en 1720, lorsque le prix de ses actions a été multiplié par huit en quelques mois sans justification économique réelle.

Ces situations peuvent durer longtemps, tant que le récit stratégique reste crédible. Le risque est clair. Plus l’écart entre la promesse et la réalité industrielle se creuse, notamment face à des concurrents chinois de plus en plus performants, plus la valorisation devient fragile. Si les anticipations venaient à être révisées, l’ajustement pourrait être brutal.

Le défi de Tesla est alors double : rattraper son retard industriel face aux constructeurs chinois, tout en continuant à convaincre les marchés que son avenir justifie encore une prime boursière exceptionnelle.

The Conversation

Chafik Massane ne travaille pas, ne conseille pas, ne possède pas de parts, ne reçoit pas de fonds d’une organisation qui pourrait tirer profit de cet article, et n’a déclaré aucune autre affiliation que son organisme de recherche.

– ref. Pourquoi Tesla est davantage valorisée en bourse que BYD – https://theconversation.com/pourquoi-tesla-est-davantage-valorisee-en-bourse-que-byd-275851

Meurtre de Quentin Deranque : quels mécanismes conduisent à la violence politique ?

Source: The Conversation – in French – By Antoine Marie, Chercheur post-doctorant, École normale supérieure (ENS) – PSL

Capture d’écran de la vidéo montrant les affrontements ayant causé le décès de Quentin Deranque, le 12 février 2026, à Lyon (Rhône).
Fourni par l’auteur

La mort de Quentin Deranque, 23 ans, militant d’extrême droite battu à mort dans les rues de Lyon le jeudi 12 février, a donné lieu à l’interpellation de 11 militants « antifa », dont un collaborateur parlementaire de La France insoumise. Cet événement, qui suscite de houleux débats sur la responsabilité politique de LFI, interroge également les processus individuels et collectifs qui peuvent conduire à la radicalisation et à la violence politique.


Comment des gens a priori ordinaires en viennent-ils à commettre des violences en réunion politiquement motivées ? Le psychologue Fathali Moghaddam a proposé un modèle devenu classique, « l’escalier vers le terrorisme », qui s’applique assez bien à la violence politique en général. Selon son analyse, l’action politique violente est l’étape finale d’un long escalier qui s’élève et se rétrécit très progressivement.

Première marche : l’exposition sélective. On ne consulte plus que des sources d’information politiques qui renforcent ses perceptions négatives et des analyses partisanes d’enjeux politiques complexes. On cesse progressivement le contact avec des interlocuteurs nuancés, capables de défendre le point de vue adverse.

Deuxième marche : l’acquisition de visions hautement sélectives, aux accents parfois conspirationnistes, des questions politiques et sociétales. À l’extrême droite, la peur du « grand remplacement » exagère considérablement l’ampleur des changements démographiques et leurs conséquences culturelles. À l’extrême gauche, l’analyse du capitalisme se focalise sur ses dysfonctionnements éventuels et sa contribution aux inégalités, négligeant la production de richesses, contre l’avis d’analyses plus nuancées.

Troisième marche : la déshumanisation du camp adverse. Notamment via ce que Waytz, Young et Ginges appellent la « motive attribution asymmetry » : chaque camp est convaincu d’agir par amour des siens, mais attribue au camp d’en face une motivation de pure haine. Ce biais, observé par les auteurs au sein de populations israélienne, palestinienne et états-unienne (républicains et démocrates), rend le compromis beaucoup plus difficile. En fait, Moore-Berg et ses collègues ont montré au moyen d’études expérimentales que ces perceptions d’hostilité sont massivement exagérées : démocrates et républicains surestiment le degré auquel l’autre camp les déteste, et sous-estime l’authenticité de leurs motivations morales – des erreurs de perception qui alimentent en retour l’hostilité réciproque.

Chaque marche de l’escalier de la radicalisation est gravie d’une manière qui est subjectivement insensible. On ne se réveille pas un matin radical : l’embrigadement est progressif. Par ailleurs, les études ethnographiques suggèrent que les militants restent convaincus, à chaque étape, d’avoir la morale et la vérité de leur côté.

La radicalisation n’est ainsi pas la plupart du temps le reflet d’une pathologie psychiatrique. Elle est plutôt une version poussée à l’extrême de traits moraux et cognitifs ordinaires : l’indignation face à l’injustice, la pensée tribale « nous » contre « eux », la solidarité envers son groupe, l’hypersensibilité à la menace sociale, le désir de protéger un mode de vie qui nous est cher, la délégitimation de ceux qui sont en désaccord avec soi politiquement, etc.

Soulignons également l’importance des motivations sociales satisfaites par le groupe : le groupe radical offre appartenance, fierté identitaire, impressions d’utilité.

Et le jour J du passage à l’action violente, la dynamique de groupe fait le reste. Il y a un enjeu de statut auprès des camarades à montrer qu’on est prêt à passer à l’acte, et le fait de recevoir des coups active des instincts fondamentaux de défense par la violence.

L’extrême droite commet plus de violences que l’extrême gauche

La recherche montre que de nombreux mécanismes sont communs à la radicalité violente de gauche et de droite, même si les contenus de croyances diffèrent considérablement.

Il est également important de rappeler une importante asymétrie. La base de données de Sommier, Crettiez et Audigier (2021) recense environ 6 000 épisodes de violence politique sur la période 1986-2021 et établit que parmi les morts des violences idéologiques, neuf sur dix sont victimes de l’extrême droite. La violence d’extrême droite est aussi plutôt dirigée contre des personnes, celle d’extrême gauche plutôt contre des biens.

Ces chiffres rappellent que la violence politique tue des deux côtés, mais pas dans les mêmes proportions.

Déradicaliser : le contact comme antidote ?

Comment déradicaliser les militants les plus extrêmes ? Une difficulté tient à ce que chaque camp refuse de concéder que des membres de son propre camp sont allés trop loin (le faire apparaît comme une « trahison »). Chaque camp est convaincu que sa propre violence n’est que la réaction légitime à celle de l’autre.

Une autre barrière réside dans la difficulté de l’accès aux militants radicaux : eux ne voient généralement pas leur vision du monde et leur engagement comme antisociaux, antidémocratiques ou assis sur des certitudes excessives.

Pourtant, la recherche offre des pistes, testées en général sur des partisans ordinaires, non violents. La méta-analyse de Pettigrew et Tropp (2006), portant sur plus de 500 études, montre que le contact intergroupe – passer un moment en face-à-face avec un membre de l’exogroupe, s’engager dans des activités communes – réduit les préjugés haineux de manière robuste. Landry et ses collègues (2021) ont montré que simplement informer les gens que l’autre camp ne les déteste pas autant qu’ils le croient par de courts messages réduit la déshumanisation.

Les maîtres-mots sont la rencontre et la reprise de contact avec la réalité : corriger les perceptions déformées sur ce que pensent vraiment les adversaires, pour les réhumaniser et réduire la défiance.

Mais les individus les plus radicalisés sont typiquement très difficiles à atteindre : confiance très basse dans les institutions publiques, dans les chercheurs, déshumanisation totale des « ennemis ». Ils sont souvent convaincus que « sur eux, ça ne marchera pas », ou se montrent rétifs à toute remise en question de leur vision du monde.

En amont, à un niveau sociétal, il importe de refuser toute glorification de la violence politique afin de réduire les incitations statutaires à la commettre – comme on recommande de limiter la publicisation des auteurs d’attentats pour diminuer l’effet de prestige.

En aval, il faut enseigner systématiquement les techniques de la désescalade, comme le refus de répondre aux provocations par la violence. L’histoire du mouvement des droits civiques américains montre que la non-violence est non seulement moralement supérieure, mais aussi stratégiquement plus efficace. Notamment parce qu’elle donne un plus grand « crédit moral » aux mouvements sociaux auprès de ceux qui n’en sont pas déjà les partisans (voire les travaux de Shinoweth et al.. sur les bienfaits de la non-violence sur le long cours).

À la limite, puisque c’est chez les jeunes (hommes) qu’ils sont les moins rares, les mécanismes de la radicalisation pourraient être enseignés dès le lycée et le collège, comme on commence à le faire avec la désinformation.


_Cet article a été écrit en collaboration avec Peter Barrett, expert de la polarisation politique, intervenant à l’Essec et à l’Université de Cergy. _

The Conversation

Antoine Marie ne travaille pas, ne conseille pas, ne possède pas de parts, ne reçoit pas de fonds d’une organisation qui pourrait tirer profit de cet article, et n’a déclaré aucune autre affiliation que son organisme de recherche.

– ref. Meurtre de Quentin Deranque : quels mécanismes conduisent à la violence politique ? – https://theconversation.com/meurtre-de-quentin-deranque-quels-mecanismes-conduisent-a-la-violence-politique-276190

Municipales 2026 : pourquoi parle-t-on autant de propreté ?

Source: The Conversation – in French – By Maxence Mautray, Doctorant en sociologie de l’environnement, Université de Bordeaux

Sur les réseaux comme dans les débats, la propreté s’impose dans les débats des municipales. (En photo, de gauche à droite, Rachida Dati, candidate à Paris, Thomas Cazenave, candidat à Bordeaux, et Benoît Payan, maire sortant candidat à Marseille.) Captures d’écran des comptes Instagram

En cette période d’élections municipales, tous les candidats ou presque s’en revendiquent et assurent connaître la solution pour y parvenir : la propreté des villes est dans toutes les bouches et la saleté semble être le mal du siècle. Pourtant, les données montrent que les quantités de déchets et d’encombrants collectés n’ont pas connu d’augmentation spectaculaire au cours des dernières années. Alors pourquoi ce décalage entre volumes réels et sentiment de saleté des villes ?


C’est une vidéo vue plus de 4 millions de fois. Postée sur les réseaux sociaux le 21 novembre, par Rachida Dati (Les Républicains, Modem et UDI), on y voit la candidate aux côtés des éboueurs, en tenue de travail. Face caméra, la candidate affirme qu’avec elle « la ville sera propre, elle sera tranquille. Et c’est justement ce qu’attendent les Parisiens », associant explicitement la propreté et la gestion des déchets à l’ordre urbain et à l’efficacité de l’action municipale. Cette mise en scène a immédiatement suscité des réactions de ses adversaires politiques qui, comme Emmanuel Grégoire (Union de la gauche), dénoncent une opération de communication jugée démagogique.

La propreté, un sujet de controverses électorales

Cette focalisation sur les déchets n’est pas propre à la capitale. À Bordeaux, la question de la « saleté » de la ville est aussi un des axes principaux de la campagne de Thomas Cazenave (Renaissance, Parti radical, Modem, Horizons, UDI) contre le maire sortant, Pierre Hurmic (Les Écologistes, PS, PCF, Génération·s). Dans son programme, Thomas Cazenave formule même une proposition emblématique : la création d’une « force d’intervention rapide » vouée à la propreté, aux encombrants et à l’entretien de l’espace public.

À Marseille, le candidat et maire sortant Benoît Payan (Printemps marseillais) se veut quant à lui le « patron de la propreté » alors qu’aujourd’hui une grande partie de celle-ci est la charge de la Métropole Aix-Marseille-Provence. Lors de la présentation de son programme le 4 février 2025, Benoît Payan admettait pourtant : « La ville est sale, elle est pourrie et je suis interpellé tous les jours là-dessus, alors que ce n’est pas une compétence de la mairie. » Cette phrase a d’ailleurs provoqué une réaction de la part de son adversaire Franck Allisio (RN), ce dernier lui répliquant « Si vous n’êtes responsable de rien, restez chez vous » lors d’un débat, le 10 février matin, sur France Inter.

Ces exemples montrent que la propreté n’est pas abordée comme un simple enjeu de gestion technique, mais comme un symbole de pragmatisme et de proximité avec les préoccupations quotidiennes des habitants. Surtout, elle suscite des réactions rapides, tant de la part des adversaires que des citoyens, preuve qu’elle touche à des attentes largement partagées.

La propreté, un bon critère pour juger un maire ?

De fait, si la propreté occupe une place aussi centrale dans les campagnes municipales, c’est notamment parce qu’elle semble être le support idéal pour juger l’action politique des équipes sortantes. Dire qu’une ville est « propre » ou « sale », c’est souvent porter une appréciation globale sur la capacité du maire à gouverner, à faire respecter des règles et à garantir un cadre de vie jugé acceptable, sans nécessairement distinguer les compétences institutionnelles ni les causes précises des dysfonctionnements observés.

La mairie est effectivement bien responsable de la propreté de l’espace public, comme le nettoyage des rues, l’enlèvement des dépôts sur la voirie, ou la gestion des poubelles publiques en ville. Cependant, la collecte et le traitement des déchets ménagers relèvent, dans la majorité des cas, comme à Marseille et à Bordeaux, des intercommunalités et des métropoles. Les dysfonctionnements pouvant être observés viennent bien souvent d’un souci de coordination entre ces deux échelons ou avec les prestataires privés engagés pour réaliser le ramassage des ordures, ou plus simplement d’un souci logistique et ponctuel lors de la collecte.

Les maires se trouvent ainsi jugés sur la propreté et les déchets, alors qu’ils n’en maîtrisent directement que la dimension la plus visible, tandis que l’envers de leur production et de leur traitement échappent largement à l’échelon municipal.

Nos villes sont-elles de plus en plus sales et encombrées ?

Pour autant, les villes françaises sont-elles confrontées à une augmentation des déchets et à une dégradation de leur propreté ? Les données disponibles ne confirment pas vraiment ce diagnostic.

Les flux les plus visibles dans l’espace public ne suivent pas une trajectoire de hausse continue. En Île-de-France par exemple, les déchets occasionnels collectés hors déchetteries, dont les encombrants qui sont particulièrement remarqués dans les rues, sont restés relativement stables entre 2016 et 2021, avant de connaître une baisse marquée en 2023, selon un rapport de l’Observatoire régional des déchets d’Île-de-France.

À l’échelle nationale et concernant l’ensemble des déchets produits par les foyers, près de 41 millions de tonnes de déchets ménagers et assimilés ont été collectés par le service public en 2021, soit 615 kg par habitant et par an en moyenne, selon l’Insee. Ce chiffre inclut les ordures collectées chez les habitants, les encombrants et les déchets en déchetterie. Les volumes collectés ont augmenté d’environ 4 % en dix ans, selon ce même rapport. Cette croissance est donc loin de l’explosion parfois suggérée par les discours politiques.

Ces chiffres invitent ainsi à distinguer le sentiment de saleté, largement fondé sur l’expérience quotidienne de la vie, de l’évolution globale des volumes de déchets produits et collectés. La propreté urbaine renvoie moins à une augmentation généralisée nette des déchets qu’à la visibilité accrue de certains flux spécifiques et aux transformations des modalités de collecte et d’usage de l’espace public.

Une écologie consensuelle… au prix d’angles morts persistants

Cependant, la relative stabilité de la production des déchets des ménages ne représente pas l’absence d’un problème. Si les déchets stagnent, ils ne diminuent pas réellement, et c’est bien là que se situe le principal enjeu environnemental. C’est même précisément parce que la réduction effective des déchets reste difficile à atteindre que la propreté occupe une place si centrale dans les débats municipaux.

Car la propreté permet de parler d’écologie à l’échelle locale de manière consensuelle, sans ouvrir un débat plus profond sur les modes de consommation, la production industrielle ou les responsabilités économiques. L’objectif d’une « ville propre » fait largement accord et les différences entre les programmes politiques portent moins sur la finalité que sur les moyens pour y parvenir : renforcement ou externalisation des services, prévention ou sanction des comportements jugés inciviques, organisation du nettoyage et de la collecte.

Mais cette focalisation a un coût. Elle tend à reléguer au second plan la question centrale de la réduction à la source des déchets, pourtant au cœur des politiques environnementales nationales et européennes. La hiérarchie dite des « 3R » (réduire, réemployer, recycler) est connue, mais sa mise en œuvre reste limitée et inégale. Lorsqu’elle est poussée plus loin, notamment à travers des politiques de type « zéro déchet », elle peut même susciter des contestations locales. Celles-ci visent souvent moins l’objectif de réduction en lui-même que les modalités de sa mise en œuvre : responsabilisation individuelle accrue, tarification incitative, suppression du porte-à-porte ou réorganisation du service public. L’écologie des déchets devient alors un sujet de débat sur la répartition des efforts et sur la définition même d’une politique environnementale considérée comme juste par les citoyens.

En somme, l’omniprésence de la propreté dans les campagnes municipales ne dit pas seulement ce que les candidats promettent de faire, mais aussi ce qu’il est politiquement plus coûteux de mettre en débat. À défaut de parvenir à réduire durablement nos déchets par des mesures justes et efficaces, l’écologie locale se construit d’abord autour de ce qui se voit, se nettoie et se mesure.

The Conversation

Maxence Mautray ne travaille pas, ne conseille pas, ne possède pas de parts, ne reçoit pas de fonds d’une organisation qui pourrait tirer profit de cet article, et n’a déclaré aucune autre affiliation que son organisme de recherche.

– ref. Municipales 2026 : pourquoi parle-t-on autant de propreté ? – https://theconversation.com/municipales-2026-pourquoi-parle-t-on-autant-de-proprete-275711