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For more than three decades, Brazilian climate scientist Carlos Nobre has warned that deforestation of the Amazon could push this globally important ecosystem past the point of no return. Working first at Brazil’s National Institute for Space Research and more recently at the University of São Paulo, he is a global authority on tropical forests and how they could be restored.

Despite working on polar science for the British Antarctic Survey for 20 years, Louise Sime finds the magnitude of potential sea-level rise hard to comprehend

The human fingerprint on global warming was likely evident in Earth’s atmosphere far earlier than previously thought—even before the invention of modern cars, a new study says. Using a combination of scientific theory, modern observations and multiple, sophisticated computer models, researchers found a clear signal of human-caused climate change was likely discernible with high confidence as early as 1885, just before the advent of gas-powered cars but after the dawn of the industrial revolution.

Breaching threshold would ramp up catastrophic weather events, further increasing human suffering

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

Major study finds world's most productive farming regions are especially vulnerable to rising temperatures, and face steep declines in agricultural output this century.

There’s frustration among researchers that falling pH levels in seas around the globe are not being taken seriously enough, and that until the buildup of CO2 is addressed, the consequences for marine life will be devastating

2024 was the first single year to surpass the 1.5°C global warming threshold – now scientists predict that a year above 2°C is possible in the near future

Societies increasingly rely on scientists to guide decisions in times of uncertainty, from pandemic outbreaks to the rise of artificial intelligence. Addressing climate change is no different. For governments wanting to introduce ambitious climate policies, public trust in climate scientists is pivotal, because it can determine whether voters support or resist those efforts.

Methane emissions spiked starting in 2020. Scientists say they have found the culprit.

Do civilizations have tipping points that determine their rise and fall? Untangling how and why civilizations fall could, in theory, help humanity avoid a future calamitous collapse. “The reason why complex societies disintegrate is of vital importance to every member of one, and today that includes nearly the entire world population,” Tainter wrote. “Whether or not collapse was the most outstanding event of ancient history, few would care for it to become the most significant event of the present era.”

Lenton, the founding director of the Global Systems Institute at the University of Exeter, was the lead author of the 2008 paper that formally introduced the idea of tipping points in the Earth’s climate system.

As of February 22, over twenty Stand Up for Science protests are scheduled for March 7 throughout the United States. The protests are being organized by fellow scientists who are concerned about the Trump administration’s feelings and actions towards science (see Robles-Gil, 2025 in Science), includ

Climate change will set the parameters of our post-Princeton lives. The fires that devastated the Palisades earlier this month were, as our nation’s exasperated and exhausted climate scientists continue to remind us, only harbingers of the floods, tornados, and heatwaves to come. Global warming is surpassing the climate models that scientists built in the 2010s and early 2020s that already forecasted a borderline-apocalyptic future. Undoubtedly, by the time current Princeton students reach middle age, they will have witnessed a slew of societal structures sag — or collapse entirely — under the weight of extreme weather events and ever-worsening ecological decline.

An international group of scientists, led by King's College London, has revealed how continued global warming will lead to more parts of the planet becoming too hot for the human body over the coming decades. the amount of landmass on our planet that would be too hot for even healthy young humans (18 to 60-year-olds) to keep a safe core body temperature will approximately triple (to 6%)—an area almost the size of the US—if global warming reaches 2°C above the preindustrial average.

An engaging discussion on groundbreaking research that reveals the unexpected drivers behind the recent unprecedented rise in global temperatures. Moderated by SDSN President Professor Jeffrey Sachs, this virtual event explored Dr. James Hansen and colleagues' findings in the latest publication, “Global Warming Has Accelerated,” their implications for climate sensitivity, and the urgent need for alternative approaches to mitigate the looming "point of no return."

Prof James Hansen says pace of global heating has been significantly underestimated, though other scientists disagree

Last month was the hottest January on record, blitzing the previous high and stunning climate scientists who expected cooler La Niña conditions to finally start quelling a long-running heat streak. The Copernicus Climate Change Service said January was 1.75C hotter than pre-industrial times, extending a persistent run of historic highs over 2023 and 2024, as human-caused greenhouse gas emissions heat the planet.

While some progress has been made in limiting greenhouse gas emissions, we are still on the path for high levels of global warming

Clouds play an important role in how much the Earth warms when greenhouse gases like carbon dioxide increase. However, scientists have struggled to determine whether low-level clouds in the tropics slow down or speed up global warming, creating uncertainty in climate predictions. A new study published in Nature adds to the growing evidence that cloud feedback is very likely to amplify warming in the climate system, rather than reduce it.

A new report from U.K. actuaries and climate scientists "shows a 50% GDP contraction between 2070 and 2090 unless an alternative course is chartered," said the lead author.​

Inondations meurtrières, incendies en plein hiver, augmentation de 1,5 °C de la température terrestre moyenne… Cette série d’événements survenus ces derniers mois signale que nous sommes entrés dans une nouvelle ère.

Experts believe H5N1 bird flu belongs in a growing category of infectious diseases that can cause pandemics across many species. But there are ways to reduce the risks..

The year 2024 wasn’t just another chapter in the unfolding climate saga; it felt like the plot twist no one wanted to believe. For decades, climate scientists warned of ifs — if we pass this tipping…

As the world’s largest gathering of Earth and space scientists swarmed a Washington venue last week, the packed halls have been permeated by an air of anxiety and even dread over a new Donald Trump presidency that might worsen what has been a bruising few years for science.

The climate and ecological crisis poses an unprecedented challenge, with scientists playing a critical role in how society understands and responds. This study examined how 27 environmentally concerned scientists from 11 countries construct the future in the context of climate change, applying a critical discursive psychology analysis. The degree to which the future is constructed as predetermined or transformable impacts both the urgency and scope of proposed actions. ...

Experts warn that mirror bacteria, constructed from mirror images of molecules found in nature, could put humans, animals and plants at risk of lethal infections

Science et conscience. Dans un vigoureux manifeste publié au Seuil, les Scientifiques en rébellion détaillent les raisons de leur passage à l’action et enjoignent leurs pairs à sortir d’une prétendue «neutralité» et désobéir avant qu’il ne soit trop tard.

AMOC collapse would bring severe global climate repercussions, with Europe bearing the brunt of the consequences.

As a six-year investigation into the Thwaites glacier in Antarctica wraps up, the scientists involved are pessimistic for the future of this glacier and the consequences for sea level rise

L’hebdomadaire britannique “New Scientist” fait sa une sur une promesse enthousiasmante concernant une maladie terrifiante : il s’agit aujourd’hui de vaincre la maladie d’Alzheimer grâce à la vaccination. Des essais sont en cours.

The net zero approach of the Paris agreement has become detached from reality as it increasingly relies on science fiction levels of speculative technology.

Unprecedented wildfires in Canada and parts of Amazonia last year were at least three times more likely due to climate change and contributed to high levels of CO2 emissions from burning globally, according to the first edition of a new systematic annual review.

Paranthropes, australopithèques, néandertaliens… Plus nous en apprenons sur les homininés, plus il devient difficile de définir ce qu’est un être humain, relève “New Scientist”.

The story of Greenland keeps getting greener—and scarier. A new study provides the first direct evidence that the center—not just the edges—of Greenland's ice sheet melted away in the recent geological past and the now-ice-covered island was then home to a green, tundra landscape.

À la veille des élections, des scientifiques mènent des actions dans la capitale pour alerter sur les risques climatiques. Les rapports alarmants sur le climat se multiplient, mais le monde politique n’en tient pas suffisamment compte aux yeux des scientifiques. Pour mieux se faire entendre, des chercheurs et académiques belges et internationaux ont donc décidé, en cette veille d’élections, d’opter pour la désobéissance civile.

Ce matin une vingtaine de scientifiques ont bloqué les entrées de la Commission européenne afin de réclamer la décroissance vue comme “la seule option pour sortir de l’impasse sociale et environnementale”

Human-caused climate crisis brought soaring temperatures across Asia, from Gaza to Delhi to Manila

Exclusive: Survey of hundreds of experts reveals harrowing picture of future, but they warn climate fight must not be abandoned

Exclusive: Planet is headed for at least 2.5C of heating with disastrous results for humanity, poll of hundreds of scientists finds

If the anomaly does not stabilise by August, ‘the world will be in uncharted territory’, says climate expert

Over the past year, there has been a vigorous debate among scientists – and more broadly – about whether global warming is “accelerating”.

An international team of scientists has warned against relying on nature providing straightforward 'early warning' indicators of a climate disaster, as new mathematical modeling shows new fascinating aspects of the complexity of the dynamics of climate. It suggests that the climate system could be more unpredictable than previously thought.

The Amazon rainforest is facing a barrage of pressures that might tip it into large-scale ecosystem collapse as soon as 2050, according to new research Wednesday warning of dire consequences for the region and the world. The Amazon, which holds more than 10 percent of the world's biodiversity, helps stabilize the global climate by storing the equivalent of around two decades of emissions of planet-warming carbon dioxide.

New paper claims unless demand for resources is reduced, many other innovations are just a sticking plaster Record heat, record emissions, record fossil fuel consumption. One month out from Cop28, the world is further than ever from reaching its collective climate goals. At the root of all these problems, according to recent research, is the human “behavioural crisis”, a term coined by an interdisciplinary team of scientists.

James Hansen says limit will be passed ‘for all practical purposes’ by May though other experts predict that will happen in 2030s

The European Commission has received an open letter signed by 110 academics, businesses, civil society organisations and research institutions urging the EU to separate emissions reductions, land-based sequestration and permanent carbon removals in the EU’s post-2030 climate framework. This separation should be at the heart of both the setting and the implementation of the 2040 target and associated plans.

“New Scientist” commence l’année avec un tunnel vers l’enfer, un projet pharaonique qui vise à accéder aux entrailles de la Terre. Le magazine britannique en fait sa couverture.

Plus d’un millier de scientifiques spécialistes du climat exhortent le public à devenir des activistes Nous avons besoin de vous », déclare Scientist Rebellion, qui comprend les auteurs des rapports du GIEC sur les changements climatiques, alors que les diplomates se réunissent dans le cadre de la Cop28.

Humanity faces ‘devastating domino effects’ including mass displacement and financial ruin as planet warms

Referring to the Paris Agreement’s target of keeping Earth from warming no more than 1.5 degrees Celsius since the Industrial Revolution, the number has become a rallying cry for climate advocates and scientists, who say the goal is humanity’s best bet on avoiding the most catastrophic outcomes of climate change by the end of the century. Venturing even 0.5 degrees past that threshold could drastically increase the frequency and severity of extreme weather, biodiversity loss, famine and water scarcity, as well as make it more likely that tipping points accelerate warming further, climate scientists say.

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La COP28 est une mascarade que les scientifiques refusent de cautionner. Les scientifiques en rébellion ont tenu à Bordeaux une contre-COP.

Réunis dans le sud-ouest de la France jusqu’à dimanche en parallèle du sommet mondial sur le climat aux Emirats arabes unis, les scientifiques en rébellion donne à voir et à penser à un public en quête de réflexion et de mobilisations.

the starkest warning yet that human activity is pushing Earth into a climate crisis that could threaten the lives of up to 6 billion people this century, stating candidly: “We are afraid of the uncharted territory that we have now entered.” Writing in the journal Biosciences, the coalition of 12 researchers, spanning North America, Europe and Asia, state in unusually stark language: “As scientists, we are increasingly being asked to tell the public the truth about the crises we face in simple and direct terms. The truth is that we are shocked by the ferocity of the extreme weather events in 2023.”

Catastrophic climate change and the collapse of human societies By Josep Peñuelas, Sandra Nogué National Science Review, Volume 10, Issue 6, June 2023 The scientific community has focused the agend…

The renowned US scientist’s new book examines 4bn years of climate history to conclude we are in a ‘fragile moment’ but there is still time to act

Previously, anthropogenic ecological overshoot has been identified as a fundamental cause of the myriad symptoms we see around the globe today from biodiversity loss and ocean acidification to the disturbing rise in novel entities and climate change. In the present paper, we have examined this more deeply, and explore the behavioural drivers of overshoot, providing evidence that overshoot is itself a symptom of a deeper, more subversive modern crisis of human behaviour. We work to name and frame this crisis as ‘the Human Behavioural Crisis’ and propose the crisis be recognised globally as a critical intervention point for tackling ecological overshoot. We demonstrate how current interventions are largely physical, resource intensive, slow-moving and focused on addressing the symptoms of ecological overshoot (such as climate change) rather than the distal cause (maladaptive behaviours). We argue that even in the best-case scenarios, symptom-level interventions are unlikely to avoid catastrophe or achieve more

Human activity has caused species groups to go extinct 35 times faster than they have over the past 500 years

First complete ‘scientific health check’ shows most global systems beyond stable range in which modern civilisation emerged

Alors que la mer Méditerranée et l’Atlantique Nord connaissent des records de chaleur, une zone dans l’océan Pacifique se refroidit, depuis maintenant trente ans. Un mystère que les scientifiques s’échinent à comprendre pour évaluer au mieux l’impact de cette “langue froide”, qui pourrait faire basculer notre avenir climatique.

Human-caused climate disruption and El Niño push temperature in mountains to 37C

As the northern hemisphere burns, experts feel deep sadness – and resentment – while dreading what lies ahead this Australian summer

After hottest day ever, researchers say global heating may mean future of crop failures on land and ‘silent dying’ in the oceans

James Hansen, who testified to Congress on global heating in 1988, says world is approaching a ‘new climate frontier’

Updated, more accurate data gives a new look at the effects of sea level rise.

Ice-free summers inevitable even with sharp emissions cuts and likely to result in more extreme heatwaves and floods

Going beyond climate disruption, the report by the Earth Commission group of scientists presents disturbing evidence that our planet faces growing crises of water availability, nutrient loading, ecosystem maintenance and aerosol pollution. These pose threats to the stability of life-support systems and worsen social equality.

In early May, a groundbreaking study from the University of California, San Francisco of 171 pregnant women found more than 9 in 10 had measurable amounts of 19 different chemicals and pesticides in their bodies. Researchers said many of those substances pass through the placenta and into developing fetuses, adding evidence to a National Institutes of Health report that warned babies are born "pre-polluted" with chemicals.

Abusive, often violent tweets denying the climate emergency have become a barrage since Elon Musk acquired the platform, say UK experts

An investigation by conservationists has found evidence that deep-seabed mining of rare minerals could cause “extensive and irreversible” damage to the planet.The report, to be published on Monday by the international wildlife charity Fauna & Flora, adds to the growing controversy that surrounds proposals to sweep the ocean floor of rare minerals that include cobalt, manganese and nickel. Mining companies want to exploit these deposits – which are crucial to the alternative energy sector – because land supplies are running low, they say.

IPCC report says only swift and drastic action can avert irrevocable damage to world

The excessive use of phosphorus is depleting reserves vital to global food production, while also adding to the climate crisis

An unprecedented rise in plastic pollution has been uncovered by scientists, who have calculated that more than 170tn plastic particles are afloat in the oceans. They have called for a reduction in the production of plastics, warning that “cleanup is futile” if they continue to be pumped into the environment at the current rate.

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An alternate timeline that ends with a Nobel prize for Exxon’s CEO.

Carbon offsets can help achieve emissions goals, some experts argue, while others say they are actively dangerous

Group says forcing polluters to store carbon dioxide underground is needed to help world reach net zero

Lorsque la Russie a assumé la présidence tournante du Conseil de l’Arctique en 2021, Moscou a présenté une proposition ambitieuse à cet organisme de huit pays soucieux de l’environnement. Au cours des 14 prochaines années, elle fera remonter des profondeurs de l’Arctique un ensemble toxique de déchets nucléaires rouillés – y compris deux sous-marins nucléaires entiers – qui ont été coulés pendant l’ère soviétique.

En cette nouvelle année, il est indispensable de faire le bilan de la production d’électricité en 2022. Pour cela, nous comparerons l’Allemagne, souvent mise en avant par de nombreux politiques français pour son avance dans la transition énergétique, et la France, que ces mêmes politiques disent en retard. Attention, l’électricité ne représente que 20 à 25% de l’énergie consommée. De plus, l’empreinte carbone des habitants tient compte des importations (soit 50% pour un Français). Les émissions de CO2 présentées dans cet article ne concernent donc que celles liés à la production d’électricité.