We tend to think of Neanderthals as a species that went extinct, but a Princeton geneticist found evidence of three waves of interbreeding over 250,000 years, leading him to argue Neanderthals didn't

We are used to saying that Neanderthals went extinct, around forty thousand years ago, edged out by modern humans. Joshua Akey, a geneticist at Princeton, thinks that is the wrong word. His team’s reading of the DNA finds that Neanderthals and modern humans interbred repeatedly across roughly a quarter of a million years, and he […]