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Heatwaves have grown hotter and stronger as the planet has warmed, making what doctors call a "silent killer" even more dangerous. How worried should we be about heat – and how can we stay safe as the climate changes?The Human Cost of Extreme HeatHot weather kills an estimated half a million people each year. The average annual death toll is greater than that from wars or terrorism, but smaller than that from cars or air pollution.Despite this, heat is rarely listed as the cause of death. That's because extreme temperatures are largely indirect killers. Most heat victims die early from illnesses – such as heart, lung and kidney disease – that are made worse in warm weather.The Physiological Impact of Heat StressHigh heat stresses the human body, sending the heart and kidneys into overdrive as they work to keep the body cool. The added strain – particularly for those with chronic illness – can prove fatal even before heatstroke hits.There are also secondary health effects from high heat. Heatwaves lead to more accidents, dirtier air, bigger wildfires and more frequent power outages, all of which can increase the burden on health systems.The Critical Role of Nighttime TemperaturesWhen days are too hot to function and nights are not cool enough to recover, the body is unable to rest. This compounds the damage done during scorching days.In many European countries, meteorologists describe nights with temperature minimums above 20°C as "tropical", while in Spain, which is more familiar with extreme heat, they call nights above 25°C "equatorial" or "torrid". In recent years, they have informally introduced a new category for night-time temperatures above 30°C: "hellish".Identifying Vulnerable PopulationsPeople who are forced to be outdoors in scorching weather – builders, farmers, rough sleepers etc – are most likely to suffer from heat exhaustion and the heatstroke that can follow.But older people, and particularly those with underlying illnesses, make up the bulk of heat-related deaths. Women are more likely to die from heat-related causes than men. Poorer people – who are less likely to have air conditioning, well-insulated homes or access to green spaces – are also at greater risk.The Humidity FactorSweat is the body's best defence against heat, lowering internal temperatures as it evaporates. But when humidity is high and the air hot and sticky, the body struggles to cool down because sweat clings to the skin. The effect this has on perceived temperatures can be equal to several degrees, enough to spell the difference between life and death.Climate Change and Escalating HeatwavesMore than a century's worth of fossil fuel pollution has clogged the atmosphere, trapping sunlight and heating the whole planet. Average global temperatures have risen by about 1.3°C since preindustrial times – and land temperatures by even more – which has pushed the baseline higher and made punishing extremes far more common.There is also some evidence that the climate crisis is making heatwaves worse by weakening the jet stream. Scientists think this is increasing the occurrence of heat domes, which are areas of high pressure and heat that get stuck over a region for days or even weeks.The Net Effect of Rising TemperaturesCold weather kills far more people than hot weather today, even in warm regions such as sub-Saharan Africa and south Asia. But as temperatures rise, the number of deaths from heat is projected to grow much faster than the number of lives saved from milder cold. When scientists modelled this in 854 European cities, they found a net increase in temperature-related deaths under all emissions scenarios, even accounting for how people adapt.Adapting to a Hotter FutureCutting fossil fuel pollution is the biggest step that can be taken to stop heatwaves from getting even hotter, along with protecting forests and wetlands that suck carbon dioxide out of the atmosphere.Urban planners have called for cities to be redesigned so they have less concrete and fewer cars, and more parks and water. This can negate the urban heat island effect, which makes cities hotter than their rural surroundings.Buildings with air conditioning or passive cooling can bring down death tolls, as can strong healthcare systems and swift emergency warnings.The Air Conditioning DilemmaAir-conditioning units increase planet-heating emissions if the power they consume is generated by burning fossil fuels, as it mostly is today, but their pollution is falling as countries clean up their electricity grids. Some experts cite the scale of the heat-related death toll as a worthy reason to use more air conditioning – particularly for the most vulnerable groups – even if it pushes temperatures higher.This year, the UK's Climate Change Committee (CCC) recommended that air conditioning be installed in all care homes and hospitals within the next 10 years, and in all schools within 25 years.Personal Safety StrategiesThe simplest advice is to stay out of the heat: avoid going outside during the hottest parts of the day, and stay in the shade if you have to. To keep your home cool, close windows during the day and open them after dark, when outdoor temperatures fall below inside temperatures. Cover windows with blinds or curtains to block out direct sunlight.Doctors also recommend drinking water frequently, wearing loose clothing and checking on vulnerable people in your community.

The opening day of the 2026 French Open saw temperatures soar to 33 °C in Boulogne‑Billancourt, forcing players to battle both the red clay and intense heat as they vie for early‑round victories.Record‑Breaking Heat Forces Players to Adapt at Roland GarrosCompetitors were confronted with unusually blistering conditions that are expected to persist throughout the first week. Daria Kasatkina admitted she had never remembered such heat at Roland Garros, while Iga Swiatek noted the dramatic shift from a cool 16 °C in previous sessions to the scorching temperatures, demanding immediate tactical adjustments.Key Numbers Highlight the Physical and Ranking StakesTemperature: 33 °C on Monday, May 25, 2026.Match result: Alex de Minaur defeated British qualifier Toby Samuel 6‑4, 6‑4, 6‑2.Samuel's ranking: Climbed to No 149 after starting the previous season at 1,785, marking a career‑high.Heat impact: Players reported reduced focus and the need for extra hydration, with no accompanying high humidity.Clay dynamics: Hot conditions accelerated ball speed, increased bounce height, and reduced the need for heavy topspin.Heat Challenges Prompt Rethink of Player Preparation and Tournament PoliciesThe extreme weather underscores the growing importance of heat‑management strategies in elite tennis. Players highlighted mental preparation for fluctuating conditions, while the tournament may need to consider additional cooling measures or schedule adjustments to safeguard athlete health.What the Scorching Conditions Mean for the Rest of the French OpenAnalysts expect the heat to continue shaping match outcomes, favoring aggressive, all‑court players like de Minaur while testing the endurance of baseline specialists. As the week progresses, the ability to adapt quickly could become a decisive factor in the quest for the Roland Garros title.

The Call for Urgent Action Climate campaigners have called on the UK government to urgently start installing air conditioning units in schools, care homes, and places where vulnerable people live. This call comes as the country experiences record high temperatures, with over 3,000 people dying from heat-related causes in 2022. The Impact of Heatwaves The UK has warmed by about 1.5C relative to the pre-industrial average, with Europe warming faster than any other continent. The majority of English homes overheat during the summer, making it essential to take measures to mitigate the effects of heatwaves. The Role of Air Conditioning Studies have shown that air conditioning can cut heat-related deaths by 75%. However, the use of air conditioning units is not without its challenges, as they consume a lot of electricity. To address this, experts suggest pairing air conditioning with solar power, which can provide a sustainable and green solution. The Way Forward Some experts argue that air conditioning should be prioritized for those who need it most, such as the elderly and young children. Additionally, investing in community solutions like cool spaces, such as community centers and churches, can provide respite for those at risk. The government has announced plans to cover grants for heat pump installation, including those with a cooling function, but experts argue that more needs to be done to increase energy supply on the grid. The Future Outlook As the climate continues to get hotter, the need to adapt properties to cope with extreme temperatures is becoming more urgent. The UK government must take action to address the issue, including investing in green energy and implementing measures to keep homes cool during the summer. This can include installing shutters, retrofitting homes with insulation, and promoting the use of air conditioning units in vulnerable settings.

The Lead: Winner-Takes-All T20 Decider New Zealand and England are facing off in the third and deciding T20 match at Hove, with the White Ferns winning the toss and choosing to bat first on a sun-baked pitch. This match will determine the series winner after New Zealand narrowly won the previous encounter by 14 runs despite a shaky start. The Event Details: Toss Decision and Previous Match Context New Zealand captain Melie Kerr called the coin correctly and decided to have first use of the pitch. "We'll try and have a better start than last time," she said after her side were tottering at 11-4 in the previous match in Canterbury. Despite that poor start, New Zealand managed to win largely thanks to the experienced hands of Sophie Devine who made an assured 87 with support from a half-century scoring Maddy Green. An all-round bowling effort then restricted England's chase and saw them fall 14 runs short. The Impact Analysis: Series on the Line Today's match is winner-takes-all, adding significant pressure to both teams. The high stakes are evident in the preparation and decision-making, with New Zealand looking to build on their previous victory while England seeks to level the series. The match is being played in hot conditions with temperatures hovering around 31 degrees, which could impact player performance and strategy. The Prediction: What Happens Next With both teams evenly matched and the series on the line, this final T20 promises to be a closely contested affair. New Zealand will look to capitalize on their momentum from the previous victory, while England will be determined to bounce back and claim the series. The outcome of this match could have implications for future rankings and team confidence as both sides continue their preparations for upcoming international competitions.

Opening Day Highlights at Roland GarrosOn a scorching Monday in Paris, the Australian contingent made a strong statement as Alex de Minaur cruised past British qualifier Toby Samuel in straight sets, and former top‑10 player Daria Kasatkina rebounded with a solid win over Turkey’s Zeynep Sonmez. Meanwhile, four‑time champion Iga Swiatek reminded the crowd why she dominates the venue, delivering a swift victory over 17‑year‑old Emerson Jones.De Minaur’s Clinical Straight‑Set Win Over Toby SamuelDespite not being at his absolute peak, the eighth seed showed why he is a threat on clay. After a brief dip in the second set, De Minaur accelerated, closing out the match in just over an hour and a half. His aggressive baseline play and improved focus—credited to a confidence boost at the Hamburg Open—proved decisive.Scorelines, Rankings and Heat: The Numbers Behind the WinsDe Minaur defeated Samuel 6‑4, 6‑4, 6‑2.Kasatkina beat Sonmez 6‑4, 6‑4, featuring 10 total service breaks.Temperatures on Court Philippe‑Chatrier peaked at 33 °C, influencing rally length and player stamina.De Minaur entered the tournament ranked No 7 after a rapid climb from No 159.Kasatkina is playing her best Grand Slam since the 2022 semi‑final run.Strategic Implications for Australian Players and Rising StarsThe strong opening performances give Australia a morale boost ahead of the second round, where De Minaur faces rising Belgian talent Alexander Blockx. For Kasatkina, the win re‑establishes her as a dark‑horse contender, especially after a recent dip to her lowest ranking in 11 years. The heat factor also highlights the need for improved conditioning, a variable that could separate the contenders from the pretenders as the tournament progresses.Looking Ahead: Potential Matchups and Form TrendsIf De Minaur maintains his current intensity, a quarter‑final clash with a top‑5 seed appears plausible.Kasatkina could capitalize on her renewed confidence to target a deep run, potentially reaching the fourth round for the first time since 2022.Swiatek’s dominant display suggests she remains the favorite, but the early blister on her hand could become a minor tactical concern.Players who adapt quickly to the heat—through pacing, hydration, and strategic timeouts—are likely to outperform those relying solely on raw skill.

The Historic Temperature Milestone and Ongoing HeatwaveA temperature of 33.5°C was recorded at London’s Heathrow airport on Monday lunchtime, shattering the previous May record set in Camden Square in 1922 and last matched in Tunbridge Wells and Regent’s Park in 1944. The Met Office expects temperatures to climb further to 35°C on Tuesday, with highs of 31°C forecast for Wednesday and 30°C on Thursday. Overnight temperatures also broke the UK’s highest minimum May temperature, with Kenley airfield recording a low of 19.4°C on Sunday.Climate Adaptation Urgency and Health RisksThe record-breaking heat underscores the growing impact of climate change on British life. Dr Chloe Brimicombe, a climate researcher at the University of Oxford, called it 'a reminder of how climate change is impacting our lives in the UK. It highlights the urgency of recent calls for heat adaptation.' Amber heat health alerts were issued on Friday, indicating a possible risk to life, particularly for the elderly, pregnant women, and those with underlying illnesses. Experts describe heat as a 'silent killer' because many related deaths go uncounted in official statistics; last summer, scientists attributed two in three heat-related deaths in European cities to climate breakdown.Policy Recommendations for a Hotter FutureLast week, the UK’s Climate Change Committee warned that British homes, hospitals, and schools are ill-equipped for the projected temperature rise. Its recommendations include installing air conditioning in all care homes and hospitals within 10 years and in all schools within 25 years, as well as setting maximum working temperatures for indoor and outdoor environments. Gareth Redmond-King of the Energy & Climate Intelligence Unit stressed that 'cutting those emissions to net zero is the only way to halt climate change and limit the danger,' but added that adaptation is equally critical. The current heatwave is driven by high pressure over the country, caused by sinking, compressing, and heating air, with the risk of more extreme heat amplified by the expected arrival of El Niño later this year.

The Lead: Michigan's Climate Reality ShiftMichigan is experiencing a dramatic shift in its climate patterns, with the state now facing unprecedented extreme weather events that challenge its previous reputation as a climate haven. From record-breaking tornadoes to devastating flooding, Michigan's communities are confronting the tangible impacts of climate change with increasing frequency and severity.The Event Details: Unprecedented Weather PatternsThe tornado that hit west Ann Arbor at 1.45am on April 15, 2026, is just one example of the extreme weather plaguing Michigan. This year alone, the state has already experienced 15 tornadoes—matching its annual average—with March seeing communities across nine counties hit by two rounds of devastating tornadoes that killed four people, including a 12-year-old boy. These tornadoes marked the earliest EF-3 tornado to hit the state in documented history.The tornado outbreaks follow some of the worst flooding the state has seen in decades. Last month, several Michigan dams and levees were at risk of failure, prompting an evacuation order in Cheboygan in the north of the state. Federal Emergency Management Agency (Fema) officials have been assessing the fallout across 30 Michigan counties.These events follow the 2025 freezing rain storm that destroyed millions of acres of trees in northern Michigan, rendering hundreds of miles of electricity infrastructure useless and cutting power for weeks to thousands of people.The Data Analysis: Mounting Economic CostsThe financial toll of Michigan's climate-related disasters is substantial. The failure of the Edenville and Sanford dams in 2020 resulted in 10,000 people evacuated and 2,500 homes and businesses damaged or destroyed at an estimated cost of $175 million. The cost of rebuilding these dams and three others that failed is estimated at almost $400 million.Lynn Coleman, who runs a campground near the Edenville dam, has faced significant financial challenges. "The business has lost an average of $35,000 a year. Now, with the rebuild [of the dam], we're hit with just under $30,000 a year in lake assessment [fees] and that goes for the next 40 years."In Ann Arbor, the closure of the Veterans Memorial ice rink—used by roughly 60,000 people last year—will result in both revenue and social impacts for the community. The city's access to city-owned ice rinks will be cut in half next season since this is one of just two such facilities.The outdoor recreation sector, essential for thousands of small businesses, faces significant challenges as floods threaten to slow the spring season's activities. Campgrounds, trails, equestrian and other facilities across 22 Michigan counties face huge and costly cleanup operations.The Impact Analysis: Changing Climate PerceptionsMichigan's experience challenges the perception of the Great Lakes region as being "climate proof" or a climate haven. The state's position in the transition boundary of the jet stream between warm, moist air from the south and cold, dry air from Canada makes it particularly vulnerable to extreme weather events."When you have warm, moist air that clashes with dry air, you get a very sharp boundary in temperatures that will cause severe weather. And that's what we've seen," explains Lisa DeChano-Cook, a professor at Western Michigan University's school of environment, geography and sustainability. "We also have a strong temperature contrast between the Great Lakes water temperatures and the Gulf moisture. More precipitation can come down, and we can have more extreme outcomes."The changing climate patterns are affecting not just the physical environment but also the social and economic fabric of Michigan communities. The combination of property damage, business disruptions, and increased costs for infrastructure improvements is creating long-term challenges for residents and local governments.The Prediction: Future Climate Outlook for MichiganResearchers indicate that Michigan's extreme weather events are likely to continue and potentially intensify. The weakening of the polar jet stream due to warmer temperatures in the Arctic is causing it to bend more to the north and south, leading to more extreme weather events across larger areas including the Great Lakes region."It's not necessarily new, and yet I think it is linked to climate change," said DeChano-Cook of the severe weather facing the state. "We're seeing this waviness in the jet stream much more often in the spring and the fall than we used to."As Michigan continues to experience these climate impacts, the state will likely need to invest more in infrastructure resilience, emergency preparedness, and climate adaptation strategies. The economic and social costs of inaction may far exceed the investments needed to prepare for and mitigate the effects of a changing climate.

The LeadA leaked internal memo from BHP, the world's largest mining company, has revealed a significant reversal in the company's climate strategy. The document shows that BHP has slammed the brakes on several key climate initiatives, despite public commitments to environmental sustainability. This revelation comes at a critical time when the mining industry faces increasing scrutiny over its environmental impact and role in climate change.The Climate Strategy ReversalThe internal memo, obtained by The Guardian, outlines a dramatic shift in BHP's approach to climate initiatives. According to the document, the company has paused or significantly reduced funding for several key projects aimed at reducing its carbon footprint. These include scaling back investments in renewable energy projects, delaying the transition to electric mining vehicles, and reconsidering targets for reducing Scope 3 emissions, which account for the majority of the company's carbon footprint.The memo reportedly expresses concerns about the financial viability of these initiatives and suggests that the company needs to focus on short-term profitability rather than long-term environmental goals. This represents a significant departure from BHP's previous public stance on climate change, where the company had positioned itself as a leader in sustainable mining practices.Financial ImplicationsThe decision to scale back climate initiatives is likely to have significant financial implications for BHP. While the company may save money in the short term by reducing investments in green technologies, it risks facing long-term costs from regulatory penalties, carbon taxes, and potential divestment by environmentally conscious investors.The mining industry as a whole is facing increasing pressure to address its environmental impact. With global temperatures rising and governments implementing stricter environmental regulations, companies that fail to adapt their business models may find themselves at a competitive disadvantage in the coming decades.Industry-Wide RepercussionsBHP's decision to slow its climate push could have far-reaching implications for the mining industry. As one of the largest and most influential mining companies, BHP's actions may set a precedent for other firms in the sector. This could lead to a broader slowdown in climate initiatives across the industry, potentially undermining global efforts to reduce emissions from the mining sector.The mining industry is responsible for a significant portion of global greenhouse gas emissions, both directly through operations and indirectly through the extraction and processing of fossil fuels. Any reduction in climate action by major players like BHP could make it more difficult for the world to meet its climate targets under the Paris Agreement.Future OutlookLooking ahead, BHP's climate strategy reversal may prove to be a short-term decision with long-term consequences. As the global economy continues to transition toward sustainability, companies that fail to invest in green technologies may find themselves struggling to compete in a low-carbon future.Investors, regulators, and consumers are increasingly demanding that companies take meaningful action on climate change. BHP will need to balance these expectations with the financial realities of operating in a volatile commodity market. The company's future success may depend on its ability to develop a climate strategy that addresses both environmental concerns and business objectives.

Unprecedented May Heatwave Forecast for EnglandTemperatures are expected to reach 35°C on Monday across parts of England, marking the hottest May day on record in the UK.Temperature Records Set to Shatter Historical May HighsThe Met Office says the current May record of 32.8°C will be eclipsed by a margin of 2.2°C, a jump unprecedented for the season.Previous monthly maximum record broken in January 2024 by 1.6°C.July 2022 peak of 40.3°C exceeded its prior record by 1.6°C.Quantifying the Heat: Nighttime Temperatures and Tropical NightsOvernight temperatures hit 19.4°C at Kenley, London, narrowly missing a “tropical night” (≥20°C). Two tropical nights are forecast for Monday and Tuesday.Implications for Public Health and Climate Trends in the UKHeatwave conditions now cover multiple sites including Santon Downham (Suffolk), Heathrow, Kew Gardens, and several locations in Essex and Oxfordshire. The event underscores the accelerating warming trend highlighted in the European State of the Climate report, which names Europe as the fastest‑warming continent.Outlook: Summer Heatwaves and the Emerging Super El NiñoScientists warn a “super El Niño” developing this summer could intensify heat events, with global heat records expected to be challenged by 2027.