Looking at a polar bear, you'd probably assume its fur is white, but you'd be wrong, as it's really just an interesting trick the light plays.

The mother polar bear exemplifies one of the most extraordinary forms of parental care. Discover more about these remarkable ...

Polar bears are very closely related to brown bears, but have numerous key adaptations that help them survive in extreme arctic conditions. They have two layers of fur to help them keep warm and dry.

Polar bear fur isn't really white -- it's transparent and covers up black skin. Here's why they look white when you see these majestic bears.