Why do polar bears look so white? - The Washington Post

Climate change and loss of sea ice putting polar bears at risk of starvation, collar cameras show - ABC News

Should There be Polar Bears in Antarctica?

From brown to white – evolution of the polar bear

Polar bears losing weight as Arctic sea ice melts, Canadian study

Surprising Polar Bear Facts About the King of the Arctic

Ten Facts about Polar Bears, Blog Posts

Bears of the Last Frontier, Polar Bear Fact Sheet, Nature

On a radiation heat transfer basis, why did nature give the

Polar Bears Wearing Cameras and Fitbits Reveal an Arctic Struggle

Why do polar bears have white fur? And nine other polar bear facts

Why polar bears are no longer the poster image of climate change

How Old Is That Polar Bear? The Answer Is in Its Blood. - The New York Times