veille.eu

The US was an oligarchy well before Trump’s first term. Recognizing this reality is essential to building a true democracy

Olivier De Schutter says new economic agenda needed to tackle crises of rising inequality and ecological collapse

The Gulf Stream is part of the Atlantic Meridional Overturning Circulation (AMOC). The AMOC is a tipping element and may collapse under changing forcing. However, the role of the Gulf Stream in such a tipping event is unknown. Here, we investigate the link between the AMOC and Gulf Stream using a high-resolution (0. 1°) stand-alone ocean simulation, in which the AMOC collapses under a slowly-increasing freshwater forcing. AMOC weakening gradually shifts the Gulf Stream near Cape Hatteras northward, followed by an abrupt northward displacement of 219 km within 2 years. This rapid shift occurs a few decades before the simulated AMOC collapse. Satellite altimetry shows a significant (1993–2024, p < 0.05) northward Gulf Stream trend near Cape Hatteras, which is also confirmed in subsurface temperature observations (1965–2024, p < 0.01). These findings provide indirect evidence for present-day AMOC weakening and demonstrate that abrupt Gulf Stream shifts can serve as early warning indicator for AMOC tipping.

I know it’s almost impossible to turn your eyes away from the Trump show, but that’s the point. His antics, ever-grosser and more preposterous, are designed to keep him in our minds, to crowd out other issues. His insatiable craving for attention is a global-threat multiplier. You can’t help wondering whether there’s anything he wouldn’t do to dominate the headlines.

States and financial bodies using modelling that ignores shocks from extreme weather and climate tipping points

Ecosystem destruction will increase food shortages, disorder and mass migration, with effects already being felt

Global biodiversity loss, ecosystem collapse and national security - A national security assessment

Notre ami Luke Kemp, chercheur au Centre pour l'étude du risque existentiel à l'Université de Cambridge (UK), a publié le livre Goliath’s Curse, the History and Future of Societal Collapse (Penguin, July 2025, 580 pages), qui sera édité en français par Albin Michel au printemps 2026. Cette « malédiction de Goliath » est le meilleur livre sur l’effondrement systémique mondial depuis dix ans, tant par la vision multidisciplinaire qu’il présente que par sa complétude et par son érudition.

Mon essai précédent explorait pourquoi certaines personnes perçoivent l’effondrement plus tôt que d’autres. Celui-ci pose une autre question : si l’effondrement ne peut pas être évité, à quoi sert réellement une prise de conscience précoce ?

Perception, pattern-seeking, and the role of neurodivergence in a failing civilisation

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.

UN GEO report says ending this harm key to global transformation required ‘before collapse becomes inevitable’

The global collapse arrives piecemeal. Germany is going first.

Je dis toujours que les modèles ne sont pas des prédictions, mais des illustrations qualitatives de ce que pourrait être l’avenir. Cependant, à mesure que l’avenir se rapproche du présent, les modèles peuvent commencer à être considérés comme des outils prédictifs. Il s’agit de la dichotomie entre météo et climat, si habilement exploitée par les politiciens pour semer la confusion dans les débats sur le climat. À l’heure actuelle, nous nous rapprochons du point où nous pourrions prévoir un effondrement de la même manière que nous pouvons prévoir la trajectoire d’une tempête tropicale.

I always say that models are not predictions; they are qualitative illustrations of what the future could be. But as the future gets closer to the present, models can start being seen as predictive tools. It is the weather/climate dichotomy, so aptly exploited to confuse matters by politically minded people in the discussion about climate. Right now, we are getting close to the point that we could forecast a collapse in the same way as we can forecast the trajectory of a tropical storm. So, you remember how “The Limits to Growth” generated a long term forecast in 1972. Here it is