Polar Bears

Polar bears are known to be excellent swimmers, but new research suggests that they are also superb divers.

An occasional dolphin kill won't be enough to sustain polar bears as global climate continues to warm.

For the first time, scientists have reported polar bears preying on white-beaked dolphins in Svalbard. Check out these stunning photos of the bears and their dolphin meals on an icy island.

Even though some polar bears are hunting on land more often in areas hit by shrinking Arctic sea ice, a diet of bird eggs and berries can't sustain these huge animals, a new study finds.

Polar bear sex involves long-distance tracking, fierce battles and lengthy copulation.

An amazing new video shows Arctic life from a polar bear's point of view.

Canada's trade in polar bear skins is driving international concern, and scrutiny.

If humans ate the same fatty foods as polar bears, they would have heart attacks. But a new study reveals how these magnificent Arctic beasts survive on such a specialized diet.

A recent expedition is a reminder that the polar bear's future is uncertain in a changing Arctic.