Les champs auteur(e)s & mots-clés sont cliquables. Pour revenir à la page, utilisez le bouton refresh ci-dessous.
filtre:
OMS
Glacial earthquakes are a special type of earthquake generated in cold, icy regions. First discovered in the northern hemisphere more than 20 years ago, these quakes occur when huge chunks of ice fall from glaciers into the sea. Until now, only a very few have been found in the Antarctic. In a new study soon to be published in Geophysical Research Letters, I present evidence for hundreds of these quakes in Antarctica between 2010 and 2023, mostly at the ocean end of the Thwaites Glacier – the so-called Doomsday Glacier that could send sea levels rising rapidly if it were to collapse.
Budgets are now climate policy. But mainstream media hasn’t caught up.
In a simulation game, five off-the-shelf large language models or LLMs were confronted with fictional crisis situations that resembled Russia’s invasion of Ukraine or China’s threat to Taiwan. The results? Almost all of the AI models showed a preference to escalate aggressively, use firepower indiscriminately and turn crises into shooting wars — even to the point of launching nuclear weapons.
For the last 80 years, Thwaites has been losing more water through melting than it’s been gaining in snow.Half a metre of sea-level rise would submerge large parts of Asia’s coastal cities including Manila and Bangkok, as well as sizeable chunks of the Netherlands and the east of England. It’s also half of the sea-level rise needed to begin flooding Manhattan.
A panel of international scientists has moved their symbolic “Doomsday Clock” closer to midnight than ever before, citing Russian nuclear threats amid its invasion of Ukraine, tensions in other world hotspots, military applications of artificial intelligence and the climate crisis as factors underlying the risks of global catastrophe.
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
Le sepsis est une affection potentiellement mortelle qui survient lorsque le système immunitaire réagit de façon extrême à une infection, entraînant une dysfonction d’organe (4). Cette réaction immunitaire provoque des lésions tissulaires et organiques et peut entraîner un état de choc, une défaillance multiviscérale et parfois le décès, surtout si elle n’est pas détectée tôt et traitée rapidement. Le sepsis peut toucher n’importe qui, mais les personnes âgées, les jeunes, les femmes enceintes ou les personnes souffrant d’autres problèmes de santé sont exposées à un risque plus élevé.
Permafrost and glaciers in the high Arctic form an impermeable ‘cryospheric cap’ that traps a large reservoir of subsurface methane, preventing it from reaching the atmosphere. Cryospheric vulnerability to climate warming is making releases of this methane possible. On Svalbard, where air temperatures are rising more than two times faster than the average for the Arctic, glaciers are retreating and leaving behind exposed forefields that enable rapid methane escape. Here we document how methane-rich groundwater springs have formed in recently revealed forefields of 78 land-terminating glaciers across central Svalbard, bringing deep-seated methane gas to the surface. Waters collected from these springs during February–May of 2021 and 2022 are supersaturated with methane up to 600,000 times greater than atmospheric equilibration. Spatial sampling reveals a geological dependency on the extent of methane supersaturation, with isotopic evidence of a thermogenic source. We estimate annual methane emissions from prog
If the system can’t contact military leaders, it checks for signs of a nuclear strike. Should its computers determine that an attack occurred, it would automatically launch all remaining Soviet weapons at targets across the northern hemisphere. As in the film, the Soviet Union long kept Dead Hand completely secret, eliminating any strategic benefit, and rendering it a pointless menace to humanity. You might think the United States would have a more sensible nuclear launch policy. You’d be wrong.
As China's record heatwave starts to subside, farmers are assessing the damage caused by a prolonged drought and the government is urging them to replant or switch crops where they can.
The melt is among the earliest in the last 30 years
Cracks and fissures stoke fears of breakup that could lead to half-metre rise in global sea levels – or more
Hugo Tagholm can clear a beach in minutes. He issues a raw sewage alert and everyone races out of the water. Swimmers hate sewage as much as sharks — no one wants to splash about in excrement. But even Tagholm gets it wrong sometimes and finds himself surfing a brown wave. “It’s pretty unpleasant paddling through effluent,” he says. “I avoid it at all costs.”
![]()


