Deep inside a handful of caves, scientists are pulling genetic secrets out of bones, teeth and even the surrounding dirt, and the results are upending what we thought we knew about our own species.

For generations, medical students were taught that the map of the human body was essentially complete. Yet cancer imaging has now exposed a hidden structure in the head and neck that behaves like a ...

A new genetic study has shifted the way scientists describe the origins of modern humans. For many years, the simplest explanation was that Homo sapiens emerged from a single ancestral population in ...