DNA reveals hybrid of Neanderthal mother and Denisovan father

A tiny bone fragment found in a Siberian Cave belongs to the first-known hybrid child born of different ancient humans. A DNA analysis shows the young girl's mother was Neanderthal and her father was Denisovan. While it's been known for a long time the two groups intermingled from traces of their DNA in modern humans, this is the first direct evidence of their dalliances.