While you may not notice it unless you are looking at a polar bear and Kodiak bear side by side, there are some key differences in their sizes and weights. For example, the average polar bear ...

That's because polar bear fur is transparent and hollow.When light strikes the outer fur some of it is absorbed while the rest is scattered away. The result? The fur can appear as different colors ...

Although it was only briefly seen during the live webcast of its launch, the Fram2 mission's zero-gravity indicator was instantly recognizable. The first astronauts to enter a polar orbit around ...

Applying each group’s research strengths, the team demonstrated that the oils in polar bear fur contained a unique fatty acid profile that lent the hair its ice-resistant properties. The study, ...

Courtesy of Christopher Paetkau A polar bear peacefully snoozing in a pillowy bed of flowers beat out some amazing shots to win the Nature Photography Contest! The winner of the second annual ...

Her name is Nur, which means "light" in Arabic. She is a polar bear who was born last November at the São Paulo Aquarium—the first of her species to be born in Latin America. Her parents ...