Actors Jack Black (left) and Michael Cera in the 2009 film 'Year One'. A recent bone discovery has given scientists clues on when humans and Neanderthals reproduced. - Filepic
Ancient human bone helps put a timeline to early humans’ first sex with Neanderthals.
AN ancient leg bone found by chance on the bank of a Siberian river has helped scientists work out when early humans interbred with our extinct cousins, the Neanderthals.
