The Pit of Bones has yielded one of the richest assemblages of human bones from this era
The discovery of DNA in a 400,000-year-old human thigh bone will open up a new frontier in the study of our ancestors.
That's the verdict cast by human evolution experts on an analysis in Nature journal of the oldest human genetic material ever sequenced.
The femur comes from the famed "Pit of Bones" site in Spain, which gave up the remains of at least 28 ancient people.
But the results are perplexing, raising more questions than answers about our increasingly complex family tree.Read the rest of this article...