Long ago, Neanderthals and humans interbred. But among Neanderthals, their human blood came mostly from their female ancestors, and a new genetic study finds this was likely due to their mating preferences.

New research has uncovered an extraordinary discovery that challenges our understanding of early human evolution. A young child, buried around 140,000 years ago at Skhul Cave in Israel, was found to have traits of both Neanderthals and Homo sapiens ...