Transition énergétique ?

Aurélien Bigo est un chercheur spécialiste des transports et de leur impact sur nos sociétés. Il a soutenu une thèse en 2020 "Les transports face au défi de la transition énergétique. Explorations entre passé et avenir, technologie et sobriété, accélération et ralentissement", il est l’auteur de “Voitures - Fake or not ?” (Tana édition, 2023), qui fait un bilan chiffré de la mobilité individuelle pour mieux en comprendre les impacts. Il a également participé à l’écriture des scénarios mobilités du plan ADEME

Pesticides, ces malades que la Belgique refuse de voir... L'enquête en couverture du 27e numéro de Tchak. Elle est signée par Laurence Grun et Pierre Vanneste, auteur·es, journalistes et documentaristes au sein du collectif Nuit Noire Production (*). Dans ce préambule, tous deux expliquent la portée de leur travail.

Cet été a vu l’adaptation passer d’un sujet relativement de niche à un thème central dans le débat public. Le terme lui-même, jusque-là encore méconnu du grand public ou fréquemment confondu avec d’autres notions (l’atténuation ou la transition en général) a fait la Une durant des semaines. Les impacts du changement climatique étaient souvent vus comme un enjeu prospectif, avec, en tête, des dates lointaines parfois anesthésiantes (2050, 2100) ; cet été, chacun a pu ressentir leurs effets au présent, bien qu’à des degrés divers. Cette mise en avant brutale mérite d’y revenir un instant : dans ce numéro, nous soulignons trois pièges sur l’adaptation observés durant cet été.

L’ironie peut être une technique de communication efficace pour esquiver les critiques ou ridiculiser un adversaire.

Comment expliquer la persistance de la critique écologique face aux tentatives de compromis du capitalisme, sous la forme du développement durable ou de la responsabilité sociétale des entreprises (RSE) ?

Chronic exposure to pesticide mixtures through diet is common, yet their combined metabolic effects and interactions with dietary factors remain unclear. We identified four pesticides prevalent in human exposure (imazalil, thiabendazole, boscalid, lambda-cyhalothrin) and assessed their combined impacts on hepatic metabolism and metabolic homeostasis using human liver cells and male mice fed standard chow or western diets. We found that the pesticide mixture induced metabolic perturbations in human hepatocytes. In addition, the pesticide mixture altered hepatic gene expression in chow-fed mice and exacerbated western diet-induced glucose intolerance, fasting hyperglycemia, and insulin resistance without affecting body weight or liver steatosis. These findings reveal that dietary context influences the metabolic consequences of pesticide mixtures, highlighting the need to consider nutritional status when evaluating environmental contaminant risks. Our results suggest that pesticide mixtures at reference doses m

Regional Resilience and Vulnerability to Global Catastrophic Risk

Emerging climate extremes should draw public attention to human-caused climate change. We expect unusual sea surface temperature (SST) and global warming the rest of this year to make 2026 hotter than 2024, despite 2024 being a peak El Nino year, while 2026 is only the lead-in year of an emerging El Nino. Beware the “surprise” record high being blamed on an extreme El Nino on top of global warming otherwise consistent with IPCC estimates. Instead, record warmth provides additional evidence of high climate sensitivity and increased net climate forcing in the past decade. These two factors are driving an unusual increase in global SSTs with major consequences. If you bear with our discussion to the end, you will find some possible good news. Figures in this post are continually updated on our website.[2] We are now on Substack[3].

The concepts of Green Growth and Degrowth represent two major narratives in the public and academic debate on socio-ecological transformation. . . Using a comparative analysis of the two research fields, we confirm several findings from previous reviews, including that Green Growth research is highly policy oriented, focuses on practical implementation and builds on empirical research methods, while Degrowth research is highly theory-driven, focuses on the analysis of complex human-nature interrelationships and builds on a sound theoretical and conceptual foundation. Our analysis further reveals that Green Growth and Degrowth are two rather isolated fields of research with little exchange and mutual reference on related topics. However, the topic of social change and transition represents an intersecting and promising future research area. . . .

Imagine being told that your children cannot play outside because the grass and soil in your local area is so polluted that it endangers their health. You are not allowed to eat the eggs from the chickens in your garden because eating them could diminish your immune system and/or lead to certain types of cancer. No, this is not the plot of a dystopian novel these are very real consequences for people living in places that are severely polluted by PFAS. Also known as forever chemicals.