Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

Polar bears are not just the largest bear species on earth they also hold the distinction of being the only species of bear that has been documented ...

A tyrannosaur that lived 70 million years ago in Alaska wasn't nearly as big as Tyrannosaurus rex, but it wasn't as small as ...

The sloth bear has shaggy fur, a long muzzle, and long claws. It's native to the Indian subcontinent and is also known as the Indian bear ...

Scientists have quantified how much climate change has driven the population decline of polar bears living in Canada's Hudson ...

Melting Sea Ice The Arctic sea ice is disappearing at a pace that alarms scientists and nature enthusiasts alike. This ...

As the Arctic warms, polar bears face a growing ... but have been recorded before in marine animals, including species that polar bears hunt. The study covered three decades, Dr Rode said ...

The U.S. Fish and Wildlife Service maintains that the new rule will aid in the recovery and eventual delisting of grizzly bears from the Endangered Species Act. A 60-day public comment period is ...