Flux continu

De verwoestende bosbranden in het natuurpark van Jasper in Canada, hebben een grote impact op de dieren die er leven. Experts maken zich specifiek grote zorgen over de zeldzame boskariboe, die het voor de branden al niet zo goed deed. Voor kleinere dieren is ontsnappen nog veel moeilijker.

The wildfire destruction to Jasper National Park has reverberated across all of Canada.

Over the past 50 years, humans have extracted the Earth’s groundwater stocks at a steep rate, largely to fuel global agro-economic development. Given society’s growing reliance on groundwater, we explore ‘peak water limits’ to investigate whether, when and where humanity might reach peak groundwater extraction. Using an integrated global model of the coupled human–Earth system, we simulate groundwater withdrawals across 235 water basins under 900 future scenarios of global change over the twenty-first century. Here we find that global non-renewable groundwater withdrawals exhibit a distinct peak-and-decline signature, comparable to historical observations of other depletable resources (for example, minerals), in nearly all (98%) scenarios, peaking on average at 625 km3 yr−1 around mid-century, followed by a decline through 2100. The peak and decline occur in about one-third (82) of basins, including 21 that may have already peaked, exposing about half (44%) of the global population to groundwater stress. Most

La communauté scientifique ne s'accorde pas quant à la nocivité des microplastiques pour la santé des humains et des animaux mais, selon certains chercheurs, nous devrions faire preuve de prudence.

La quantité de déchets plastiques déversée chaque année dans les océans devrait tripler d’ici 2040, atteignant 29 millions de tonnes métriques.