The Guardian Climate Change

Landmark review says urgent action needed to conserve resources and save ecosystems that supply fresh water

More than half the world’s food production will be at risk of failure within the next 25 years as a rapidly accelerating water crisis grips the planet, unless urgent action is taken to conserve water resources and end the destruction of the ecosystems on which our fresh water depends, experts have warned in a landmark review.

Half the world’s population already faces water scarcity, and that number is set to rise as the climate crisis worsens, according to a report from the Global Commission on the Economics of Water published on Thursday.

Emergency requests by 27 states to pause rule requiring fossil fuel-powered plants to reduce emissions were denied

The US supreme court declined on Wednesday to put on hold a new federal rule targeting carbon pollution from coal- and gas-fired power plants at the request of numerous states and industry groups in another major challenge to Joe Biden’s efforts to combat climate change.

The justices denied emergency requests by West Virginia, Indiana and 25 other states – most of them Republican-led – as well as power companies and industry associations, to halt the Environmental Protection Agency (EPA) rule while litigation continues in a lower court. The regulation, aimed at cutting greenhouse gas emissions that drive the climate crisis, took effect on 8 July.

Shoshone national forest officials pause gruesome policy of exploding carcasses to minimize hazard during dry spell

Rangers in Wyoming’s Shoshone national forest believe they have figured out how to mitigate an elevated risk of wildfires: they are no longer using explosives to blow up dead horses.

The temporary pause in the seemingly bizarre and somewhat gruesome policy comes as a lengthy dry spell in the state’s backcountry combines with hotter-than-usual temperatures, increasing the possibility of wildfires. Experts say drought and heat from the climate crisis is fueling a rise in extreme wildfires worldwide.

The devastation wrought by Helene and Milton could shake up priorities and bring the climate crisis more to the fore

Despite its enormous implications, the climate crisis has so far mostly been a dormant issue in the US presidential election. Some hope the devastation wrought in quick succession by two major hurricanes will shake up the priorities of American voters before a stark choice between Kamala Harris and Donald Trump on polling day.

Last month, Hurricane Helene became one of the deadliest storms ever to hit the US, killing more than 220 people and causing billions of dollars in damage as it tore a path northwards, through the key election swing states of Georgia and North Carolina. This was followed two weeks later by Hurricane Milton, which rampaged across Florida.

Tech barons are forever predicting some amazing new technology to fix the climate crisis. Yet fixes already exist

There are so many ways to fiddle while Rome burns, or as this season’s weather would have it, gets torn apart by hurricanes and tornadoes and also goes underwater – and, in other places, burns. One particularly pernicious way comes from the men in love with big tech, who are forever insisting that we need some amazing new technology to solve our problems, be it geoengineering, carbon sequestration or fusion – but wait, it gets worse.

At an artificial intelligence conference in Washington DC, the former Google CEO Eric Schmidt recently claimed that “[w]e’re not going to hit the climate goals anyway because we’re not organized to do it” and that we should just plunge ahead with AI, which is so huge an energy hog it’s prompted a number of tech companies to abandon their climate goals. Schmidt then threw out the farfetched notion that we should go all in on AI because maybe AI will somehow, maybe, eventually know how to “solve” climate, saying: “I’d rather bet on AI solving the problem than constraining it.”

Rebecca Solnit is a Guardian US columnist. She is the author of Orwell’s Roses and co-editor with Thelma Young Lutunatabua of the climate anthology Not Too Late: Changing the Climate Story from Despair to Possibility

Wolsingham school’s carbon-cutting event had been planned by pupils but parents raised concerns

A school has made a U-turn on a student-led plan to turn the heating off for a “blue nose” climate action day after parents raised concerns.

The heating was due to be turned off at Wolsingham school, County Durham, on Friday but the plan has now been postponed until the summer term of next year when it is likely to be warmer.

As the threats of climate change continue to become realities in new and sometimes terrifying ways, more and more teams and leagues will have to address the problem

The Arizona Diamondbacks have a climate problem. To be more precise, Phoenix has a climate problem and, as a result, the Diamondbacks have a field that needs renovations if the team is going to keep fans cool – and no one is sure whose responsibility it is to pay for it.

The team’s lease on Chase Field expires in 2027, and negotiations with Maricopa county have stalled. The organization’s plan to fund the $400m to $500m project is modeled on the Arizona Cardinals’ successful bid to fund their own field renovation through stadium sales and recaptured income, and the plan is supported by the Chamber of Commerce, the Arizona Chamber of Commerce and Industry, Greater Phoenix Leadership, the Economic Council and Downtown Phoenix, Inc.

Bring in ‘future homes standard’ or leave families at risk of higher bills and emissions for decades, MPs and experts say

Ministers must take steps now to ensure that all homes are built to the most efficient low-carbon standards, or risk locking households into higher bills and greenhouse gas emissions for decades to come, a group of MPs and experts have urged.

The government is mulling changes to the building regulations in England to bring in a “future homes standard” that would require all new homes to be built with low-carbon equipment such as heat pumps and solar panels.

In 2020, nine bodies were found near US-Mexico border. In the first eight months of 2024, there were 108.

Ten times as many migrants died in New Mexico near the US-Mexico border in each of the last two years compared with just five years ago.

During the first eight months of 2024, the bodies of 108 presumed migrants, mostly from Mexico and Central America, were found near the border in New Mexico, according to the most recent data. Many of the bodies were discovered less than 10 miles (16km) from El Paso.

Investors say climate change poses biggest risk to their assets, and urge Albanese government to see the economic dangers of a slow path to net zero

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Institutional investors dealing with portfolios in the trillions of dollars aren’t typically the most vocal climate campaigners. You won’t find many superannuation fund staff, fund managers, asset consultants or brokers with a placard on the streets or on top of a Newcastle coal train.

But you may increasingly find them on a screen you’re watching. Or at least their message.

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UC San Diego has added an innovative prerequisite to ‘prepare students for the future they really will encounter’

Melani Callicott, a human biology major at the University of California, San Diego, thinks about the climate crisis all the time. She discusses it with family and friends because of the intensity of hurricanes like Milton and Helene, which have ravaged the southern US, she says. “It just seems like it’s affecting more people every day.”

That’s one reason why she is glad that UC San Diego has implemented an innovative graduation requirement for students starting this autumn: a course in climate change. Courses must cover at least 30% climate-related content and address two of four areas, including scientific foundations, human impacts, mitigation strategies and project-based learning. About 7,000 students from the class of 2028 will be affected this year.

Natural sinks of forests and peat were key to Finland’s ambitious target to be carbon neutral by 2035. But now, the land has started emitting more greenhouse gases than it stores

Read more: Trees and land absorbed almost no CO2 last year. Is nature’s carbon sink failing?

Tiina Sanila-Aikio cannot remember a summer this warm. The months of midnight sun around Inari, in Finnish Lapland, have been hot and dry. Conifer needles on the branch-tips are orange when they should be a deep green. The moss on the forest floor, usually swollen with water, has withered.

“I have spoken with many old reindeer herders who have never experienced the heat that we’ve had this summer. The sun keeps shining and it never rains,” says Sanila-Aikio, former president of the Finnish Sami parliament.

A US study estimates the total climate pollution from LNG was 33% greater than that from coal over a 20-year period. This should have major ramifications for emissions policy

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The claim that Australian gas exports are “clean” and needed to drive the transition to net zero greenhouse gas emissions has become an article of faith for significant parts of the country’s industry, media and political classes – often repeated, only occasionally challenged.

It has buttressed a massive expansion of the liquified natural gas (LNG) industry in the north of the continent over the past decade, with major new developments in Queensland, Western Australia and the Northern Territory.

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The sudden collapse of carbon sinks was not factored into climate models – and could rapidly accelerate global heating

It begins each day at nightfall. As the light disappears, billions of zooplankton, crustaceans and other marine organisms rise to the ocean surface to feed on microscopic algae, returning to the depths at sunrise. The waste from this frenzy – Earth’s largest migration of creatures – sinks to the ocean floor, removing millions of tonnes of carbon from the atmosphere each year.

This activity is one of thousands of natural processes that regulate the Earth’s climate. Together, the planet’s oceans, forests, soils and other natural carbon sinks absorb about half of all human emissions.

New climate network will teach trainee doctors more about heatstroke, dengue and malaria and role of global warming in health

Mosquito-borne diseases such as dengue and malaria will become a bigger part of the curriculum at medical schools across Europe in the face of the climate crisis.

Future doctors will also have more training on how to recognise and treat heatstroke, and be expected to take the climate impact of treatments such as inhalers for asthma into account, medical school leaders said, announcing the formation of the European Network on Climate & Health Education (Enche).

Former administration officials say Trump deliberately denied funds to states he deemed politically hostile

Donald Trump deliberately withheld disaster aid to states he deemed politically hostile to him as US president and will do so again unimpeded if he returns to the White House, several former Trump administration officials have warned.

As Hurricane Helene and then Hurricane Milton have ravaged much of the south-eastern US in the past two weeks, Trump has sought to pin blame upon Joe Biden’s administration for a ponderous response to the disasters, even suggesting that this was deliberate due to the number of Republican voters affected by the storms.

The Iranian photographer reveals the dangers posed to fishermen and farmers by the polluted water in which he used to swim

The world’s largest enclosed body of water, the Caspian Sea, is surrounded by jeopardies. Declining water levels from global heating have been exacerbated by increasing levels of extraction from the Volga and the Ural, the Russian rivers that flow into it. Satellite photographs show the sea shrinking at a dramatic rate. And each year increasing levels of pollutants from the five coastal states that border the Caspian contaminate it with spills from growing numbers of oil and gas fields, and with industrial and domestic waste from expanding coastal towns and cities, a magnet for internal migration.

The Iranian photographer Khashayar Javanmardi grew up on the shores of the Caspian Sea in northern Iran and used to count the hours at school before he could return to swim in it. He has spent the past few years, however, documenting the environmental decline along its coastline.

Caspian: A Southern Reflection is published by Loose Joints (£44)

We are losing in the fight against global warming, it is time to put effort into controlling what we pump into the atmosphere

The havoc unleashed by Hurricane Milton provided unambiguous evidence that we are entering a critical and alarming new phase in the planet’s climate crisis. Rising fossil fuel emissions have triggered increases in ocean temperatures and sea levels to such an extent they are generating some of the most destructive storms ever experienced in Florida. Together with Hurricane Helene earlier, the lives of about 250 people have been claimed and thousands of homes destroyed. Florida has been left reeling and forecasters have warned there is more to come – a lot more.

It is a grim prognosis that should be galvanising Florida’s political leaders into taking urgent action to protect the state. Extraordinarily, this has not been the case. Despite the intensification of hurricanes and worsening flooding over the past decade, governor Ron DeSantis has consistently rejected the idea that global warming poses a threat to Florida or that the phenomenon exists at all. A few weeks ago, he signed a law erasing the words “climate change” from state statutes and effectively pledged the state’s future to burning fossil fuels. Such behaviour is disturbing.

While some embrace technological innovations, others are forced to close as global heating causes lack of snowfall

Sitting at his window in Västerås, central Sweden, Thomas Ohlander is wondering when the winter season might start for his outdoor adventure business, Do The North. “To schedule a trip we have to be sure of snow,” he says, “And that start date is going backwards at a crazy speed.”

Each year, Ohlander’s local ice-skating club has recorded the first date on which its members managed to get out on the frozen lakes. In 1988, that date was 4 November; this year the prediction is 4 December.

Hurrican Milton, the Middle East crisis, forest fires in Brasília and the Northern Lights: the last seven days as captured by the world’s leading photojournalists