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 ...

Polar bear genomes have retained mitochondrial DNA from ancient grizzly bears, and grizzlies have inherited genes from hybridizing with polar bears. “People worry that if they interbreed, polar bears ...

But not all the news is grim, as new research offers a glimmer of hope: climate change may be driving accelerated evolution. Scientists have found that polar bears in southeastern Greenland exhibit ...

Meet our story’s protagonist: a female polar bear. Displaced by shrinking sea ice in the Arctic, she was forced to wander south, deeper into the Canadian Northwest Territories. Here, our lady in white ...

Polar bears are running out of ice and out of time, yet inside their cells something remarkable is happening. As the Arctic warms and traditional hunting grounds vanish, researchers are finding that ...