PrimeWire

You can now watch the entire National Geographic Sex In The Stone Age movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

A fragment of a pinky bone and a tooth twice the size of today�s average molar are the only remnants of a species we now know lived at the same time and place as modern humans�and interbred with them. They are a part of us we never knew existed. What did these �people� look like? And how do they fit into what we thought we knew about our biological development as a species?