Tools were made from bones as well as stones in East Africa 1.5 million years ago, new research reveals. The finding adds to growing evidence of technological sophistication among early humans that ...

The type of bone determines the amount of movement. Type of bone Example in body Description Long Femur Cylindrical in shape and found in the limbs. Their main function is to act as a lever.

Long before 7,000 years ago ... hunters relied on poison to make their weapons more effective. Overall, the femur bone helped protect the remnants of poison, preventing it from becoming entirely ...