Ancient Bone Tools: A Big Step in Human Skill from a Million Years Ago.

Scientists found tools made from animal bones in Tanzania. These tools are 1.5 million years old, which is much older than any bone tools found before.

The tools were made from the leg bones of elephants and hippos. Early humans used stones to break the bones and make them sharp.

The tools were probably used like axes to cut meat from dead animals. The scientists believe that early humans were scavenging, not hunting, these animals.

The bones show that early humans carefully chose them and spent time shaping them into tools. This shows that they were skilled and planned ahead.

Scientists are not sure which type of early human made these tools. There were three different types of humans living in the area at that time.