Can someone describe the threat of warming Artic climate to polar bears?
Basically global warming is causing the Arctic to warm rapidly, which is causing sea ice to melt rapidly. Polar bears require sea ice to hunt, so if the sea ice melts too early and too much, they can’t get enough food. This causes some to die of starvation, and females may not have enough energy to have cubs. See the link below for an interview with a Canadian biologist who studies polar bear populations.