http://youtu.be/bGbFKt2TzzQ
A mysterious new species of human being who lived alongside our ancestors 30,000 years ago has been discovered by scientists. The cavemen, called Denisovans, was identified from DNA taken from a tooth and finger bone found in a cave in Siberia.
The finding means there were at least three distinct members of the human family tree alive at the time – modern humans (including European Cro Magnon), Denisovans and Neanderthals.