In a long-anticipated decision hailed as a victory by environmental groups, the United States last week declared the polar bear (Ursus maritimus) a 'threatened' species. But this heightened protection ...

Polar bear numbers in parts of Alaska and Canada have declined by almost half, as thinning sea ice makes it increasingly difficult for them to hunt down seals, which are a key part of their diet.

A new study has found that polar bear numbers in Greenland have been declining over the past 20,000 years due to rising sea temperatures. The research, which analysed genetic material, food choices, ...

Polar bears look set to see their numbers dwindle by nearly third by mid-century, a top conservation body said Thursday, warning climate change poses the greatest threat to the king of the Arctic. The ...