Justice & Paix

87%. That’s how much the emissions of NVIDIA (worth 5 trillion dollars) increased in 2024, as an article from TruthDig is one of the only sources in the world to point out. This means it became the world’s most valuable company by answering soaring demand for AI… whilst doubling its carbon footprint. Not to mention water: Samsung’s next ‘mega-cluster’ of GPU fabs will consume half of Seoul’s water, says the same article.

A “pushing and triggering” mechanism has has driven the Arctic climate system to a new state, which will likely see consistently increased frequency and intensity of extreme events across the atmosphere, ocean and cryosphere this century.

Militaries are huge energy users whose greenhouse gas emissions (GHG) make a significant contribution to the climate crisis. However, countries do not systematically record and report their military emissions so the real share of this source of emissions remains unclear. The Conflict and Environment Observatory (CEOBS) and Scientists for Global Responsibility estimate that everyday military activity could be responsible for around 5.5% of global emissions, meaning that if the world’s militaries were a country, they would be the fourth largest emitter in the world.6 Furthermore, as military spending increases and the rest of society decarbonises, that proportion is set to rise.

A new report explores a framework for global climate risk management and includes contributions from an actuary at the Government Actuary's Department.

Months of scorching temperatures sometimes over 50 degrees Celsius (122 Fahrenheit) in parts of India this year left hundreds dead or ill. Official government records put the number of heat-related deaths this year as 110, but public health experts say that number is more likely in the thousands. Poor data collection methods and reporting are stopping the country from getting a more accurate picture of how deadly the heat is. Experts are concerned that it's hindering efforts to better prepare for future heat waves.

Le Brexit, la toute-puissance de la Big Tech, les cryptomonnaies, les fake news et même la hausse des prix du café : tout s’explique par le “quantitative easing”, affirme “The New Statesman”. L’hebdomadaire britannique choisit de faire sa une sur les risques et les limites de cette politique monétaire.

Terrestrial ecosystems have taken up about 32% of the total anthropogenic CO2 emissions in the past six decades1. Large uncertainties in terrestrial carbon–climate feedbacks, however, make it difficult to predict how the land carbon sink will respond to future climate change2. Interannual variations in the atmospheric CO2 growth rate (CGR) are dominated by land–atmosphere carbon fluxes in the tropics, providing an opportunity to explore land carbon–climate interactions3–6. It is thought that variations in CGR are largely controlled by temperature7–10 but there is also evidence for a tight coupling between water availability and CGR11. Here, we use a record of global atmospheric CO2, terrestrial water storage and precipitation data to investigate changes in the interannual relationship between tropical land climate conditions and CGR under a changing climate. We find that the interannual relationship between tropical water availability and CGR became increasingly negative during 1989–2018 compared to 1960–1989

Mobil idées. Alors que s’ouvre cette semaine le Mondial de l’auto à Paris, le Réseau action climat (RAC) propose 19 mesures pour changer notre modèle en matière de mobilité et tourner le dos à l’auto dans le respect de la justice sociale.