Compared with modern humans (Homo sapiens), who have been around for the past 300,000 years, Homo erectus, or "upright human," had a long reign. The ancient human species lived from 2 million years ...

Almost 2 million years ago, a young ancient human died beside a spring near a lake in what is now Tanzania, in eastern Africa. After archaeologists uncovered his fossilized bones in 1960, they used ...