Pinning down the details of how and when Neanderthals and homo sapiens interbred
Tens of thousands of years ago, modern humans mated with Neanderthals. But exactly how and when that happened -- and who those groups of humans were -- is less known.
Tens of thousands of years ago, modern humans mated with Neanderthals. But exactly how and when that happened -- and who those groups of humans were -- is less known.