Flux continu

Climate sensitivity is substantially higher than IPCC’s best estimate (3°C for doubled CO2), a conclusion we reach with greater than 99 percent confidence. We also show that global climate forcing by aerosols became stronger (increasingly negative) during 1970-2005, unlike IPCC’s best estimate of aerosol forcing. High confidence in these conclusions is based on a broad analysis approach. IPCC’s underestimates of climate sensitivity and aerosol cooling follow from their disproportionate emphasis on global climate modeling, an approach that will not yield timely, reliable, policy advice.

Des milliers de formulaires de candidature ont été dérobés. Parmi eux : le dossier de l’actuel prétendant démocrate à la mairie de New York, qui a été transmis à des médias.

Why is the Trump Administration trying to kill a small space science institute in New York City? Explanation begins with Galileo’s method of scientific inquiry and ends with the role of special interest money in the United States government. Galileo improved the telescope, allowing clearer observations of the planets and the Sun. Galileo differed from his peers, as he was unafraid to challenge authority. He claimed that the world should be understood based on observations, and he spoke directly to the public. He obtained philanthropic support for his observations and openly described the conclusion that Earth was not the center of the solar system – Earth revolved around the Sun.

La ministre de l’éducation américaine, Linda McMahon, reproche à l’université de ne pas avoir protégé les étudiants juifs du campus malgré des demandes en ce sens.

L’établissement new-yorkais a perdu 400 millions de dollars de subventions, dont 250 millions pour la santé. Il tente de se réformer pour récupérer ces financements coupés par l’administration Trump, qui mène une offensive contre des institutions d’enseignement jugées trop progressistes.

Un établissement sous tutelle. L’université new-yorkaise Columbia a accepté vendredi 21 mars d’engager les réformes drastiques demandées par l’administration de Donald Trump, pour ne pas perdre ses 400 millions de dollars de subventions fédérales. Il s’agit d’une concession majeure pour la prestigieuse université, depuis plusieurs semaines sous le feu du président américain.

We must learn from the past. We cannot remain silent in the face of authoritarian attacks on our peers, even if they have not yet come for us.

L'administration Trump a annoncé vendredi la "suppression immédiate" de 400 millions de dollars de subventions fédérales à l'université privée new-yorkaise Columbia, épicentre des manifestations pro-palestiniennes au printemps 2024, qu'elle accuse d'inaction face "à des actes antisémites".

Solvay surfe sur la vague de la transition écologique pour augmenter les capacités de ses usines et continuer à fabriquer des PFAS à destination des batteries de véhicules électriques. Malgré les différents scandales environnementaux dans lequel le groupe belge est impliqué, une enquête réalisée en collaboration avec The Examination, le Post and Courier et Columbia Investigation Journalism révèle que l’industriel est loin d’avoir renoncé à ces substances.

Simultaneous harvest failures across major crop-producing regions are a threat to global food security. Concurrent weather extremes driven by a strongly meandering jet stream could trigger such events, but so far this has not been quantified. Specifically, the ability of state-of-the art crop and climate models to adequately reproduce such high impact events is a crucial component for estimating risks to global food security. Here we find an increased likelihood of concurrent low yields during summers featuring meandering jets in observations and models. While climate models accurately simulate atmospheric patterns, associated surface weather anomalies and negative effects on crop responses are mostly underestimated in bias-adjusted simulations. Given the identified model biases, future assessments of regional and concurrent crop losses from meandering jet states remain highly uncertain. Our results suggest that model-blind spots for such high-impact but deeply-uncertain hazards have to be anticipated and acc