Loss of sea ice means more time fasting on land for mother bears, reducing their milk supply and contributing to shrinking bear populations, researchers say. A mother polar bear with her cubs.

Polar bears are an iconic species and are currently listed as vulnerable by the International Union for Conservation of Nature (IUCN) due to the loss of their natural habitat and the impact of ...

Zoo Miami welcomed its first baby sloth bears in 26 years, zoo officials announced Friday. Kematee, a 4-year-old sloth bear, gave birth to two cubs at the zoo on Dec. 4.

The Obama administration is setting aside 187,000 square miles in Alaska as a "critical habitat" for polar bears, an action that could add restrictions to future offshore drilling for oil and gas.