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« L’océan mondial, qui abrite la majorité des espèces vivantes sur Terre (50 à 80 % selon les estimations), génère plus de 60 % des services écosystémiques qui nous permettent de vivre, à commencer par la production de la majeure partie de l’oxygène que nous respirons. Il absorbe environ 30 % des émissions de CO2 générées par l’humanité, ce qui provoque son acidification.
L’océan mondial régule à plus de 80 % le climat de la Terre. Il joue un rôle majeur dans la température terrestre. »
Source : Wikipedia
Coalition citoyenne pour la protection de l’Océan
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New Scientist
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.
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”.
abs_empty
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.
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.”
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.
Eleven of the 20 largest economies got a C or worse on a renewable energy report card, which assessed their plans to reach net zero and their targets for producing and using renewable energy
More than three-quarters of the world's largest rainforest has become less resilient to drought since the early 2000s, with areas near humans and with lower rainfall being the worst hit
L’algue du partenariat symbiotique qui constitue les lichens s’adapte aux évolutions du climat à un rythme extrêmement lent, suggère une nouvelle étude.
Rapidly rising levels of atmospheric methane are "very bad news for humanity and the planet," warned one observer.
How we can harness the staggering diversity of trees to lock away more carbon
The new top scientist at the National Aeronautics and Space Administration wants the famed space agency to become a leading voice on climate change science, too.
The UK is one of the world's most nature-depleted countries - in the bottom 10% globally and last among the G7 group of nations, new data shows. It has an average of about half its biodiversity left, far below the global average of 75%, a study has found.
A UN analysis today revealed a bleak upward trajectory for global carbon dioxide emissions, despite new CO2-curbing plans by scores of countries, including major emitters such as the US and the European Union’s 27 member states.
Around 13,000 researchers have called for urgent action to slow down the climate emergency as extreme weather patterns shock the world. They listed three core measures.
As scientists gather online to finalize a long-awaited update on global climate research, recent extreme weather events across the globe highlight the need for more research on how it will play out, especially locally.
The list of extremes in just the last few weeks has been startling: Unprecedented rains followed by deadly flooding in central China and Europe. Temperatures of 120 Fahrenheit (49 Celsius) in Canada, and tropical heat in Finland and Ireland. The Siberian tundra ablaze. Monstrous U.S. wildfires, along with record drought across the U.S. West and parts of Brazil.
More than half the world’s rivers stop flowing for at least one day per year, according to the first detailed global map of river flow. More rivers than that are expected to run dry if climate change and water management issues aren’t addressed.
