Fossilized teeth show that two different kinds of ancient human ancestors coexisted more than 2 million years ago. One of ...

Fossilized teeth found in Ethiopia show that two human ancestor species, including a possibly unknown one, lived there 2.6 ...

A team of researchers led by ASU found strange fossils in Ethiopia. They believe they've discovered a new species related to humans.

A team of researchers say they’ve found fossils that add two new ancestors to our human family tree. While these two ...

Modern humans emerged roughly 300,000 years ago, but our genus Homo is much older. So what's the oldest human species on record?

Evidence is mounting that the evolution of our species is more convoluted than we imagined — more like a braided stream than ...