Polar bears aren't actually white. Their color is determined ... Underneath all that hair, polar bear skin is actually black. The black skin readily absorbs sunlight to keep the bear warm.

Now, researchers have discovered the bears have another unexpected Arctic adaptation: greasy fur. It’s a trait that, ...

Monitoring polar bear populations is important for their conservation and management, but is also challenging because they occupy vast, remote, and extreme regions. With the loss of sea ice, ...