Did you know, the way we use our hands is recorded in our wrist bones?
Lucy was part of a species that lived 3.2 million years ago who started walking on two legs instead of living in trees. Let’s take a closer look at the wrist bones of modern humans and chimpanzees, and compare them to those from Lucy’s species, to find out how and when our ancient ancestors moved from life in the trees to life on the ground.
