Modern humans migrated to Eurasia 75,000 years ago, where they encountered and interbred with Neanderthals. A new study published in the journal Current Biology shows that at this time Neanderthals were already carrying human DNA from a much older encounter with modern humans.
Click here for original story, Study shows Neanderthals inherited at least 6% of their genome from a now-extinct lineage of early modern humans
Source: Phys.org