Hervé Bocherens says his colleagues find his research methods a little "crude." He dissolves 30,000-year-old animal bones in hydrochloric acid strong enough to burn through metal, soaks the bone ...

The cave bear, Ursus spelaeus, was a prominent member of the Pleistocene megafauna in Europe, whose evolutionary history and ecological dynamics continue to captivate palaeontologists and evolutionary ...

During the Paleolithic era 35,000 years ago, a small cave bear settled into a cave to hibernate. It never woke up. Human hunters most likely found the bear — a species called Ursus rossicus — napping ...