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

Modern humans descended from not one, but at least two ancestral populations that drifted apart and later reconnected, long before modern humans spread across the globe.

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

Modern humans descended from not one, but at least two ancestral populations that drifted apart and later reconnected, long before modern humans spread across the globe.

Farming arose on multiple continents among populations with radically different cultures and environments and with no means ...

Ian Randall is Newsweek's Deputy Science Editor, based in Royston, U.K. His focus is reporting on science and health. He has covered archeology, geology, and physics extensively. Ian joined ...

For the past 150 years, scientists and laypeople alike have accepted a “savanna” scenario of human evolution. The theory, primarily based on fossil evidence, suggests that because our ancestral ape ...

We’re full of evolutionary leftovers Evolution can be a slow process ... These leftovers, or vestigial traits, are found in human beings too. The appendix is thought to have been involved ...

The discovery adds to the growing understanding of how genetic changes arising during evolution made us human and significantly ... “We didn’t have the full picture. Now, this opens up many ...

Using advanced analysis based on full genome sequences ... may have played a crucial role in human evolution," said Cousins. The study also found that genes inherited from the second population ...