The development of hair was of central importance for the evolution of mammals and thus also of humans. However, the evolutionary origin of the genetic program of hair was previously unknown.

The red hair is officially gone.

Add Yahoo as a preferred source to see more of our stories on Google. Lively rocked her luscious blonde locks when she played the iconic Serena van der Woodsen on Gossip Girl. "Honestly I am a shy ...

For most of our evolutionary history, human activity has been linked to daylight. Technology has liberated us from these ancient sleep-wake cycles, but there is evidence sunlight has left and ...