Neanderthals and Modern Humans Coexisted Longer Than Thought - The New York Times
https://www.nytimes.com/1995/08/29/science/neanderthals-and-modern-humans-coexisted-longer-than-thought.html
Signs of Neanderthals Mating With Humans - The New York Times
https://www.nytimes.com/2010/05/07/science/07neanderthal.html