Scientists have found part of an ancient skull in a cave in Israel that they say is the first physical evidence of human migration from Africa to Europe.
Writing in the journal Nature, experts say the partial skull is about 55,000 years old - dating back to the time when anthropologists believe the migration passed through the Middle East.
The skull looks like others found in Europe and resembles the bones of what experts call "modern man," bearing out theories that modern men and their ancestors, Neanderthals, existed at the same time and possibly interbred.