Neanderthals and humans interbred '100,000 years ago'

Neanderthals and modern humans were interbreeding much earlier than was previously thought, scientists say.

Traces of human DNA found in a Neanderthal genome suggest that we started mixing with our now-extinct relatives 100,000 years ago.
Previously it had been thought that the two species first encountered each other when modern humans left Africa, about 60,000 years ago.
The research is published in the journal Nature.
Dr Sergi Castellano, from the Max Planck Institute for Evolutionary Anthropology, in Germany, said: "It is significant for understanding the history of modern humans and Neanderthals."read more =http://www.bbc.co.uk/news/science-environment-35595661