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 ...

We don’t know how the the life of this bear was, but its end came in the darkness, at the bottom of a pit in a narrow Romanian cave. There were no claw marks on the stone, no signs of a struggle, just ...