Scientists discovered humans descended from two ancient populations, not one. These groups split 1.5 million years ago.

The study showed that populations don’t lose their “evolvability,” even if conditions remain the same for many generations.

Penn State researchers propose that Earth and life have evolved together in a way that is more typical of life-supporting ...

"Our history is far richer and more complex than we imagined," said human evolutionary geneticist Aylwyn Scally.

but the speed at which it's undergone that evolution and the ability it's shown to undergo these big evolutionary jumps is ...