Find out why Neanderthals, with whom early humans in Europe interbred, went extinct. More

When Homo sapiens turned up in prehistoric Europe, they ran into the Neanderthals. The two types of human were similar enough – intellectually and culturally - to interbreed. But as more Homo sapiens moved into Europe and the population increased, there was an explosion of art and symbolic thought which overwhelmed the Neanderthals.

AIR DATE 7/7/15