Studying human evolution involves piecing together scattered clues about how we survived against tough odds. One of the biggest mysteries is understanding how large or small ancient human populations ...

Researchers at the University of Maine are theorizing that human beings may be in the midst of a major evolutionary shift—driven not by genes, but by culture. "Human evolution seems to be changing ...

The Big Ideas: What Is History? Through the ages, human survival has depended on our ability to cultivate and preserve plant diversity. By Cary Fowler Cary Fowler is an agriculturalist and a founder ...