Meat has played a starring role in the evolution of the human diet ... thanks The Rockefeller Foundation and members of the National Geographic Society for their generous support of this series ...

This story appears in the February 2011 issue of National Geographic magazine ... In short, the evolution of feathers would have happened along with the evolution of flight.

As a result, their traits may coevolve and diversify in geographic mosaics ... has been studied for almost as long as the theory of evolution by natural selection has been around.

“The central idea of biological evolution is that all life on Earth ... most of which are insects,” said National Geographic. “This means that millions of other organisms remain a complete ...