Flux continu

Nina Hromadska avait 21 ans lorsque le réacteur numéro 4 de la centrale nucléaire de Tchernobyl a explosé. Elle raconte au « Monde » comment elle a fait face au plus grave accident nucléaire du XXᵉ siècle.

La glace de l’Antarctique fond massivement depuis 2016. Mais le changement climatique ne date pourtant pas de si tôt. Des chercheurs pensent avoir compris comment se comporte l’eau dans l’océan Austral pour expliquer cette fonte drastique mais tardive.

Les forêts du Congo changent de rôle : depuis 2010, elles émettent plus de carbone qu'elles n'en absorbent. Comment ce basculement menace le climat.

Wildfires used to die down and even stop at night with cooler temperatures and increased humidity. But a study released Friday says climate change is making burning weather more around the clock in North America because night is becoming warmer and drier. Canadian fire scientists say potential burning hours for fires have increased 36% in the last 50 years. California now has about 550 more fire-friendly hours a year than it did in the 1970s. North American summer nights are warming faster than days, evening relief is evaporating for forests and that means the area of land burned is soaring.

Using a field experiment, we measured the heat tolerance of insects across many different groups. This is important because most previous studies either combine inconsistent datasets or focus on a single species. Our goal was to understand how entire insect communities respond to heat. We looked at a large variety of insects, such as flies, bees, beetles, butterflies and grasshoppers, to name just a few. We found that many are likely to face dangerous levels of heat stress. This was true even under conservative assumptions, including the possibility that species move into cooler habitats.

À l’observatoire de Mauna Loa, à Hawaii, la concentration de dioxyde de carbone dans l’atmosphère est mesurée de façon continue depuis 1958. Cette « courbe de Keeling » est devenue l’une des visualisations les plus frappantes du changement climatique.

Climate change is causing measurable harm globally1,2. Political and legal efforts seek to link these damages with specific emissions, including in discussions of loss and damage (L&D)3,4; however, no quantitative definition of L&D exists5,6, nor is there a framework to link past and future emissions from specific sources to monetized, location-specific damages. Here we develop such a framework, which is integrated with recent efforts to estimate the social cost of carbon7. Using empirical estimates of the non-linear relationship between temperature and aggregate economic output, we show that future damages from past emissions—one component of L&D—are at least an order of magnitude larger than historical damages from the same emissions. For instance, one tonne of CO2 emitted in 1990 caused US$180 in discounted global damages by 2020 ($40–530) and will cause an additional $1,840 through 2100 ($500–5,700). Thus, settling debts for past damages will not settle debts for past emissions. In other illustrative esti

Après une année 2025 record marquée par des incendies dévastateurs, la Commission européenne alerte sur une aggravation du phénomène et dévoile une stratégie renforcée.

L'UE et l'Australie ont scellé mardi, à Canberra, un accord de libre-échange censé dynamiser leurs échanges, mais qui provoque la colère des syndicats agricoles en Europe. Il doit encore être validé par le Conseil européen. Voici les principaux points de cet accord.

Klimaatverandering is veel meer dan een ecologisch vraagstuk; het is een ‘threat multiplier’ die de wereldorde op scherp zet, zegt klimaatgeneraal Tom Middendorp in een gezamenlijke podcast Mastering Transitions van nlmtd en Change Inc.