The finding offers a small window of hope for a polar bear population vulnerable to the effects of climate change.

In Churchill, Canada, polar bears gather by the hundreds in the fall, waiting for the nearby bay to freeze. The human ...

In order to understand the massive changes afoot in the warming polar regions, oceanographer Allison Fong is hunting for the tiniest clues.

We had just finished listening to a lecture about scientific research being conducted on the Greenland Ice Sheet when an excited voice came over the public address system of the National Geographic ...

Emperor penguins march along the ice on Cape Washington on Antarctica's Ross Sea. Contrary to popular belief, these ...