Polar bears need all the help they can get to survive their frosty Arctic environment. One of their biggest survival secrets appears to be greasy hair. The sebum–or hair grease–on their fur ...
more and more bears were born that were white and they could all catch seals more easily. POLAR BEAR 1: Hic! Delicious! POLAR BEAR 2: Yummier than fish any day. GRANDDAD: And now they're called ...
So why aren't there polar bears on the southernmost continent? The answer has to do with the evolution and geological history of the Earth. “Bears are largely a phenomenon of the northern ...