EarthPolar bears waste lots of their energy and it could be a problem We thought polar bears had neat tricks for conserving energy in lean periods, but it turns out they are not that thrifty, which could cause them trouble in the future 51¶¯Âþ
EarthRuptured Tibetan glaciers triggered massive speedy avalanches In 2016, a pair of glaciers suddenly collapsed and sent huge chunks of ice hurtling downhill. The events suggest such disasters are more common than we thought 51¶¯Âþ