Brown-polar hybrid bears may be a result of climate change, herd formations help caribou avoid mosquitos, data system connects animals from different zoos for captive breeding, and fluoride keeps sharks cavity-free.

Black skin, blubber, and a coat of clear tubes. Facts and stats to better know a polar bear.

Chris Morgan shares his thoughts on the recent case of polar bear cannibalism. "Each and every polar bear is facing increased every-day stress as a result of our warming planet."

This excerpt from the PBS series NATURE examines how polar bears’ arctic habitat is literally falling into the sea as a consequence of global climate change, and how they may be helpless to adapt in time.

Intelligent, adaptable and fierce, the polar bear learned how to survive in a place that offers few comforts to any creature.

As Arctic winters warm, polar bears are faced with a troubling situation.

A polar bear mother hunts for seal pups, but they are becoming more difficult to find these days.

The polar bear has become the poster child of global warming, but there's more to the Arctic than ice and polar bears.

Scientists have uncovered an evolutionary path suggesting that polar bears are a relatively new species.