Ancient hominids may have left the trees, but we never abandoned them

If you're quickly trying to define what sets humans apart from other primates, you might first point to our greater intelligence and our capacity for complex language. The next big difference is that we walk on two feet and stay out of the trees... except, as this video explains, it's not quite that simple. » 1/01/13 2:59pm 1/01/13 2:59pm

Our ancestor Lucy shared her world with another, completely different…

The world's most famous hominin fossil is Lucy, an Australopithecus afarensis that had a chimp-like brain but walked upright like a human. Now a new discovery reveals that Lucy actually shared her world with another, very different hominin species. » 3/28/12 4:00pm 3/28/12 4:00pm

Our hominid ancestors were walking like us nearly 4 million years ago

One of the most basic differences separating us from other apes is our ability to walk fully upright, and that goes back to the emergence of the Homo genus 1.9 million years ago. At least...that's what we used to think. » 7/19/11 4:00pm 7/19/11 4:00pm

Were humans really using tools 3.4 million years ago?

Animal bones were recently discovered that suggested humans were using tools 3.4 million years ago - 800,000 years earlier than previously thought. But that finding is being challenged, and the story of human evolution hangs in the balance. » 11/16/10 5:05pm 11/16/10 5:05pm