Jean-Pascal Van Ypersele

Global effort needed to limit effects of pollution, industrial fishing and climate crisis, World Ocean Assessment says

Researchers identify sharp rise to about 0.35C every decade, after excluding natural fluctuations such as El Niño

German scientists warn global warming is accelerating faster than expected, raising the risk of a 3 °C rise by 2050 and forcing Europe to confront unthinkable adaptation plans.

For decades, the surface of the polar Southern Ocean (south of 50°S) has been freshening—an expected response to a warming climate. This freshening enhanced upper-ocean stratification, reducing the upward transport of subsurface heat and possibly contributing to sea ice expansion. It also limited the formation of open-ocean polynyas. Using satellite observations, we reveal a marked increase in surface salinity across the circumpolar Southern Ocean since 2015. This shift has weakened upper-ocean stratification, coinciding with a dramatic decline in Antarctic sea ice coverage. Additionally, rising salinity facilitated the reemergence of the Maud Rise polynya in the Weddell Sea, a phenomenon last observed in the mid-1970s.

Identifying the socio-economic drivers behind greenhouse gas emissions is crucial to design mitigation policies. Existing studies predominantly analyze short-term CO2 emissions from fossil fuels, neglecting long-term trends and other GHGs. We examine the drivers of all greenhouse gas emissions between 1820–2050 globally and regionally. The Industrial Revolution triggered sustained emission growth worldwide—initially through fossil fuel use in industrialized economies but also as a result of agricultural expansion and deforestation. Globally, technological innovation and energy mix changes prevented 31 (17–42) Gt CO2e emissions over two centuries. Yet these gains were dwarfed by 81 (64–97) Gt CO2e resulting from economic expansion, with regional drivers diverging sharply: population growth dominated in Latin America and Sub-Saharan Africa, while rising affluence was the main driver of emissions elsewhere. Meeting climate targets now requires the carbon intensity of GDP to decline 3 times faster than the global

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.

On the topic of climate and carbon reduction commitments, corporations like Google, Microsoft, and Shell once positioned themselves as leaders in sustainability, setting ambitious net-zero goals to align with global environmental efforts. However, the rapid rise of energy-hungry artificial intelligence is forcing these companies to reconsider—or even abandon—these commitments as they struggle to balance environmental responsibility and making money from new tech.

Environ 500 personnes ont participé dimanche à une marche pour le climat à Bruxelles, a indiqué l’organisation à l’origine de l’évènement Rise For Climate Belgium. Par le biais de cet évènement intitulé "Touche pas à mon futur", l’organisation espère inciter la société civile à s’opposer à l’éventuelle réduction des politiques climatiques et aux politiques d’austérité, alors que l’extrême droite monte un peu partout en Europe.

Le fonctionnement de l’économie mondiale repose encore massivement sur les combustibles fossiles, qui nous tuent littéralement. Il est non seulement impératif de refuser tout nouvel investissement dans l’infrastructure fossile, mais il faut également fermer et déconstruire l’infrastructure fossile existante.

Het burgercollectief Rise for Climate Belgium doet een oproep om op 17 september; Autoloze zondag, te betogen in Brussel voor het "geleidelijk maar snel" afstappen van fossiele brandstoffen. Dat zegt Kim Lê Quang, voorzitter van het burgercollectief.