The whites of your eyes are not an accident. They are, scientists now believe, one of the most sophisticated social ...

Are you lactose intolerant? Many people are. In fact, the ability to digest lactose may be an example of adaptive evolution in the human lineage. Although the study of natural selection in humans is ...

(Volodymyr Yakimchuk/Creatas Video+/Getty Images Plus) A seismic shift in the selection pressures acting on humans may have brought us to a major turning point in our evolutionary journey. According ...

Long before DNA unraveled the double helix of life, scientists were already tinkering with its inheritance. The idea that traits could be passed from one generation to the next fascinated early ...