A hybrid grolar bear saga is unfolding in the Arctic, and the tale of this strange family has much to tell us about nature on ...

Today, polar bears live only on the northernmost stretches of ice and snow, but their roots may lie farther south -- in an area that is now Ireland. Sometime within the last 50,000 years, suggests a ...

“They (polar bears) have indeed lost a lot of their past genetic diversity, and because of this, they are very likely more sensitive to climate-change threats today.” An analysis of newly sequenced ...