A new study reveals that a mysterious human ancestors contributed 20% of modern human genes, potentially enhancing brain ...

"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.

The chart of an ape walking on all fours ... This is still a commonly used depiction of human evolution, with the famous Progress diagram having been published in a book called "Early Man ...

Are you lactose intolerant? Many people are. In fact, the ability to digest lactose may be an example of adaptive evolution in the human lineage. Although the study of natural selection in humans ...