One might think that the polar bear would be an ideal candidate for hibernation because it has to endure such long and harsh ...

Climate change is transforming ecosystems in the far north. An international team of scientists has made some surprising discoveries.

Polar bear diets should be filled with a lot of fat. So much fat that some researchers study them just to understand how a species that consumes a diet with up to 80% blubber avoids heart disease and ...

This is a polar bear still-hunting at a seal hole on the sea ice of the southern Beaufort Sea. (Mike Lockhart, USGS) Sign up for new weekly newsletter Closing Arguments to get the latest about ongoing ...

Sept. 6, 2006 — -- The breakup of Arctic sea ice because of global warming is depriving polar bears of weeks of valuable hunting time they need to survive the long ice-free months without food, ...