Lucy's pelvic, hip, and leg bones offered more proof ... With dangling arms and long, slightly curved hands and feet, Lucy and other members of her species may have also been good climbers.

Underneath the skin, hands are an exquisite integration of tissues. The thumb alone is controlled by nine separate muscles. Some are anchored to bones within the hand, while others snake their way ...

In that case, bones can fuse together or are lost over time…On the other hand, or foot, having more joints and bones means you can increase your flexibility and dexterity, performing lots of ...