A chimp would smoke you in a tree-climbing contest. It’s not your fault — their bodies are built for it, with longer arms that move them through branches efficiently.
Though a human body looks different than a chimp’s, the line between the two species blurs in the archaeological record. Fossilized bones have inspired scientific debate over when our human ancestors gave up climbing trees for good. But a recent peek inside a fossilized hip joint suggests our ancient relatives were scampering up trees more recently than previously thought.
