The oldest sediment DNA discovered so far comes from Greenland and is 2 million years old.

A mystery that started with the discovery of a pinkie finger bone in Denisova Cave in the Altai Mountains of southern Siberia may finally have been cracked.

Fossils can reveal far more than the shapes of ancient creatures. Molecules preserved inside old animal bones provide clues about past diseases, what those animals ate, and the climates they lived in.