A hidden force let humans smash a barrier that had trapped our ancestors for millions of years.

A sweet tooth for sugars from fruits and honey may have helped fuel brain growth in our primate cousins and early human ...

Combining archaeological evidence with ancient DNA and data on past climates shows us how long and winding the story of human ...

Known as the Cambrian Explosion, this flurry of rapid evolution produced most of the animal phyla and ecosystems we see around us today. And it may have taken off because some of those early animals ...

A new study from the University of Kansas complicates the picture of primates living in North America some 55 million years ...

A new genomic study from Smithsonian scientists traces the honeycreepers' explosive diversification to the formation of O'ahu ...