Richard Leakey had several brushes with death. When he was a boy, he fell off a horse and fractured his skull. A few years later, a puff adder – one of the deadliest snakes in the world – sunk ...

His bones were fossilized, and they lay undetected until 1985, when they were discovered by paleoanthropologist Richard Leakey ... The proportions of skull to pelvis indicates that his sisters ...