Researchers in Australia recently discovered a 2 million year old skull that gives us more clues about our evolution as a ...

The fastest animal on land is the cheetah, capable of reaching top speeds of 104 kilometers per hour. In the water, the ...

But in that short time, we’ve discovered about two dozen species of human ancestors in Europe, Africa, and Asia—which you can see mapped out in the infographic below. The first known fossils of human ...