While it's common knowledge that Neanderthals and modern humans interbred long ago, a new genetic study is suggesting that among the Neanderthals, their modern human blood came mostly from the moms in...

A study out Thursday in Science argues that Neanderthal men and human women were particularly inclined to mate, a sexual habit that offers insight into the evolution of the modern human genome. Get any of our free email newsletters — news headlines,

The 2010 discovery that early humans and Neanderthals once encountered one another and had babies was a scientific bombshell that electrified the field of human origins.