EarthA year on thin ice: Four seasons in a radically changed ArcticThe ice that was once rock-solid is now rotten and see-through in places, weakened by a winter of freak heatwaves. Discover the new normal at the North PoleFeatures
EarthQuarter of California’s snowpack loss is from human-made warming California’s reservoirs depend on the gradual melting of winter snow in the Sierra Nevada mountains, but the snowpack is dwindling and may not return News