A 30,000-year-old finger is pointing the way to a population of humans experts never knew existed. The pinkie bone, discovered in southern Siberia in what's known as the Desinova Cave, contains DNA that scientists used to sequence the entire genome of the young girl it belonged to, NPR reports.
It shows the population of so-called Denisovans were more like Neanderthals than modern humans. The genome also reveals a relatively close relationship with today’s people of New Guinea, suggesting the Denisovans lived all over the world. (More human evolution stories.)