Elle a atteint un niveau tel qu'il dépasse le seuil sécuritaire, indique le rapport Planetary Health Check.

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Le démantèlement du secteur fédéral de la science, aux États-Unis, fragilise cette coopération. Les chercheurs à qui Découverte a parlé sont inquiets.

Ils tenteront de convaincre une cour fédérale américaine de suspendre l'application de trois décrets visant à accroître la production d'énergies polluantes.

Listen to 20 ANS APRÈS KATRINA, LA NOUVELLE-ORLÉANS DONNE UN ESPACE DE LIBERTÉ À L'EAU by leblance #np on #SoundCloud

Abstract. 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. The indicators show that human activities are increasing the Earth's energy imbalance and driving faster sea-level rise compared to the AR6 assessment. For the 2015–2024 decade average, observed warming relative to 1850–1900 was 1.24 [1.11 to 1.35] °C, of which 1.22 [1.0 to 1.5] °C was human-induced. The 2024-observed best estimate of global surface temperature (1.52 °C) is well above the best estimate of human-caused warming (1.36 °C). However, the 2024 observed warming can still be regarded as a typical year, considering the human-induced warming level and the state of internal variability associated with the phase of El Niño and Atlantic variability. Human-induced warming has been increasing at a rate that is unprecedented in the instrumental record, reaching 0.27 [0.2–0.4] °C per decade over 2015–2024. This high rate of warming is caused by a combination of greenhouse gas emissions being at an all-time high of 53.6±5.2 Gt CO2e yr−1 over the last decade (2014–2023), as well as reductions in the strength of aerosol cooling. Despite this, there is evidence that the rate of increase in CO2 emissions over the last decade has slowed compared to the 2000s, and depending on societal choices, a continued series of these annual updates over the critical 2020s decade could track decreases or increases in the rate of the climatic changes presented here.

The Trump administration cut research funding that sought cures for future pandemics, examined the causes of dementia and tried to prevent HIV transmission. More than 150 researchers shared with ProPu...

Le seuil d’un réchauffement mondial de 1,5 °C par rapport au niveau préindustriel est aujourd’hui devenu le phare qui guide toute l’action climatique mondiale. Mais d’où vient cet objectif? Le journal...

A tiny but crucial agency that maintains physical coordinates like latitude and longitude in the US is struggling as the Trump administration forces out federal employees.

Peut-on prévoir le climat du futur? Les gestes individuels changent-ils quelque chose? Nos réponses aux questions fréquentes liées aux changements climatiques.

Le nouveau premier ministre propose une vision où cohabitent ambitions vertes et soutien aux énergies fossiles, ce qui peut sembler contradictoires.

White House aims to end NOAA’s research office; NASA also targeted

The move raises concerns among scientists that the assessment, which is required by Congress, is now in jeopardy.

It is the second confirmed measles death in the U.S. in a decade. If the outbreak continues at the current pace, the nation may lose its “elimination” status.