Humans and Neanderthals, thought to have coexisted for 10,000 years across the whole of Europe, are more likely to have lived at the same time for only 6,000 years, the new study suggests. Scientists believe the two species could have lived side by side at specific sites for periods of only about 2,000 years, but Mellars claims they would have lived in competition at each site for only 1,000 years... Two new studies of stratified radiocarbon in the Cariaco Basin, near Venezuela, and of radiocarbon on fossilized coral formations in the tropical Atlantic and Pacific have given scientists a better...