First wild polar-grizzly bear hybrid offspring discovered
May 23, 2010, 5:44 p.m. by S.A. Rogers
DNA testing on a bear shot in Canada reveals that polar-grizzly bear hybrids are in fact interbreeding in the wild.
Assignment Earth: Beetles destroy pines in the Rockies
May 6, 2010, 5:32 p.m. by Meredith Darlington
Video: Beetles are killing countless whitebark pine trees, a major source of food for wildlife, including grizzly bears.
What do you get when you cross a polar bear with a grizzly?
November 2, 2009, 7:34 p.m. by Katy Rank Lev
German zoo features rare hybrid species, but there are only 17 confirmed animals in existence.