Veille 2.1

After hottest day ever, researchers say global heating may mean future of crop failures on land and ‘silent dying’ in the oceans

More than 40% of land vertebrates will be threatened by extreme heat by the end of the century under a high emissions scenario, with freak temperatures once regarded as rare likely to become the norm, new research warns. Reptiles, birds, amphibians and mammals are being exposed to extreme heat events of increasing frequency, duration and intensity, as a result of human-driven global heating. This poses a substantial threat to the planet’s biodiversity, a new study warns. Under a high emissions scenario of 4.4C warming, 41% of land vertebrates will experience extreme thermal events by 2099, according to the paper, published in Nature.

Materials put into domestic compost are failing to disintegrate after six months – the only solution is to use less. Most plastics marketed as “home compostable” don’t actually work, with as much as 60% failing to disintegrate after six months, according to research.

Industry groups representing some of the world’s largest companies are “opposed to almost all major biodiversity-relevant policies” and are lobbying to block them, according to a new report. Researchers found that 89% of engagement by leading industry associations in Europe and the US is designed to delay, dilute and block progress on tackling the biodiversity crisis, which scientists say is as serious as the climate emergency.

Sustainable food systems are a cornerstone to cutting emissions but have been largely absent from the agenda in Glasgow. Farming is a complex issue on the journey to net zero, as it is both a source and sink for emissions. About 20% of global emissions come from agriculture and land use, and this rises to more than 25% for the food system as a whole, which includes processing, packaging and transport.