Genetically, polar bears and grizzly bears aren’t all that different. Scientists believe that polar bears split from grizzly bears between 250,000 and 130,000 years ago. The two species are actually ...

When he heard the news of a grizzly-polar bear hybrid shot in Canada's Arctic last month, Tom Seaton thought back to an unusual polar bear hide he'd once seen at Nelson Walker's home in Kotzebue. "He ...

Based on the genetic sequences analyzed, modern polar bears were more closely related to Irish brown bears than ancient polar bears. ((Canadian Press)) A female grizzly bear who lived in Ireland less ...

After what appeared to be another grizzly-polar hybrid bear was killed in Nunavut last week, scientists are continuing the debate over what this means for the future of polar bears in an era of ...

The animal confirmed last week to be half polar bear, half grizzly bear is certainly weird, scientists say, but he's not necessarily a symbol of global warming or anything else. Last week, DNA ...

Climate change is steering grizzly bears and polar bears on a collision course. When they meet in the middle, fights are inevitable. Find out who is favored to win, evolutionarily speaking. Image by ...