National Geographic Explorer Paul Salopek is retracing the path of human migration. More specifically, the scientific ...

Thinking about current events, I often wonder: Is it possible that our species has entered a stage of devolution, or at least that we stopped evolving thousands of years ago? I know it's easy to see ...

When researchers in China announced a possible new human species from a cave in Hebei province, they did more than add another name to our already crowded family tree. They introduced a population ...