In climate news, a new United Nations report warns that unless nations act urgently and immediately on an unprecedented scale, the “ecological foundations of society” are at risk of collapse. The report by U.N. Environment found that even if the goals of the Paris climate agreement are met, winter temperatures in the Arctic will rise between 3 and 5 degrees Celsius—or as much as 9 degrees Fahrenheit—by 2050. U.N. Environment says nations should immediately shift away from fossil fuels to renewable energy, while reducing waste and promoting diets less heavy in meat and dairy.