Shifts in Earth's orbit around the sun influence the start and end of Ice Ages over tens of thousands of years and human ...

Exciting news on the extinction front emerged last week from Indonesia: An orangutan used a rope bridge strung high between ...

Over the past 125,000 years, the average size of mammals on the Earth has shrunk. And humans are to blame. That's the conclusion of a new study of the fossil record by paleo-biologist Felisa Smith of ...

Have you ever found yourself in a museum's gallery of human origins, staring at a glass case full of rocks labeled "stone tools," muttering under your breath, "How do they know it's not just any old ...

Homo sapiens’ interconnected networks gave them a survival edge over more isolated Neanderthals amid environmental changes.