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juin 2025

An international group of researchers has produced a third update to key indicators of the state of the climate system set out in the IPCC AR6 assessment, building on previous editions in 2023 and 2024. Forster et al. (2025) assess emissions, concentrations, temperatures, energy transfers, radiation balances, and the role of human activity and conclude that, while natural climate variability also played a role, the record observed temperatures in 2024 were dominated by human activity and the remaining carbon budget for 1.5° C is smaller than ever.
The European Commission said Friday it intends to scrap new rules against greenwashing after they hit a roadblock in the final stretch from conservative lawmakers calling them too onerous for businesses.
False claims obstructing climate action, say researchers, amid calls for climate lies to be criminalised
Major study finds world's most productive farming regions are especially vulnerable to rising temperatures, and face steep declines in agricultural output this century.
Even if agricultural practices adapt in response to higher temperatures, five of the world's six main staple crops will suffer severe losses due to climate change. Global corn yields are projected to fall by about 12 or 28 per cent by the end of the century
Since Donald Trump's presidential election victory, major tech companies have abandoned years of policies restricting military work and sought out lucrative defense contracts and deeper connections with the Pentagon.
When a small Swedish town discovered their drinking water contained extremely high levels of Pfas, they had no idea what it would mean for their health and their children’s future
In a rapidly changing climate, evidence-based decision-making benefits from up-to-date and timely information. Here we compile monitoring datasets (published at https://doi.org/10.5281/zenodo.15639576; Smith et al., 2025a) to produce updated estimates for key indicators of the state of the climate system: net emissions of greenhouse gases and short-lived climate forcers, greenhouse gas concentrations, radiative forcing, the Earth's energy imbalance, surface temperature changes, warming attributed to human activities, the remaining carbon budget, and estimates of global temperature extremes. This year, we additionally include indicators for sea-level rise and land precipitation change. We follow methods as closely as possible to those used in the IPCC Sixth Assessment Report (AR6) Working Group One report.
Breaching threshold would ramp up catastrophic weather events, further increasing human suffering
SO2 declines have contributed ~25% of recent warming and driven recent acceleration. The impact of additional SO2 emissions on cloud formation diminishes as emissions increase, meaning that reductions in SO2 over areas with low background sulphate concentrations, such as the ocean, could result in a proportionately larger warming effect than in highly polluted areas, such as south Asia.
What are the most significant groups in this complex network of our emergent ‘collapse culture’? These groups don’t cohere into a single unified culture that understands itself as singular. Instead, the are thinly connected inside the complex of contemporary culture, a set of linked clusters. Between them, ideas do circulate, but the links between them, as I will return to, are more often established through intermixing in the heads of their proponents, however chaotically this takes place.....
Exclusive: Climate.gov, which supports public education on climate science, will soon no longer publish new contentA major US government website supporting public education on climate science looks likely to be shuttered after almost all of its staff were fired, the Guardian has learned.
A chemical that takes thousands of years to break down is found in England's freshwater fish at 1,000 times above safe levels – and could end up on our dinner tables
A study measured methane flow from more than 450 nonproducing wells across Canada, but thousands more remain unevaluated.
Ten kinds of possible collapses examined.
This brief introduces degrowth – intentional downscaling of the global economy to achieve ecological sustainability and social justice – for people working in environmental and social advocacy. It centers the question: “Has the economy outgrown the planet?” because global ecological limits have reshaped the conditions under which we pursue climate action, environmental justice, and many other pressing aims.
Repeatedly mass infecting kids with COVID is not a public health strategy. It's a fast pass to declining population health
Mark Lynas has spent decades pushing for action on climate emissions but now says nuclear war is even greater threat Climate breakdown is usually held up as the biggest, most urgent threat humans pose to the future of the planet today. But what if there was another, greater, human-made threat that could snuff out not only human civilisation, but practically the entire biosphere, in the blink of an eye?
Repeated damage from extreme heat over time seems to be a leading factor causing kidneys to fail. Repeated damage from extreme heat over time seems to be a leading factor causing kidneys to fail.
Fifteen years ago, smack in the middle of Barack Obama's first term, amid the rapid rise of social media and a slow recovery from the Great Recession, a professor at the University of Connecticut issued a stark warning: the United States was heading into a decade of growing political instability.