Why polar bear fur doesn't freeze
New research finds that grease that coats polar bear fur contains a specialized mixture of chemicals that make it resistant to freezing.
polar bears
Polar bears in a key region of Canada are in sharp decline, a new survey shows
Polar bears in Western Hudson Bay — on the southern edge of the Arctic — are continuing to die in high numbers, a government survey has found. Females and bear cubs are having an especially hard time.