The hominin known as Lucy may not be the direct ancestor of humans.
Recent research suggests that humankind's origins lay outside of Africa. This is the nature of science: a paradigm that cannot be questioned on a regular basis becomes a dogma.
Anthropologists gather clues about how our ancient ancestors lived from their teeth. What will future anthropologists make of us based on the fossilized pearly whites we'll leave behind?
Despite claims about its age, puzzling combinations of features from Homo naledi gives it an uncanny resemblance to human beings.