Red hair shows up in only about 1 to 2 percent of people worldwide, yet in Scotland and Ireland the rate climbs above 6 ...

(Westend61/Getty Images) The DNA blueprint we carry around with us today has been influenced far more by natural selection ...

A massive study of ancient and modern DNA from thousands of West Eurasian people has identified nearly 500 genetic variants ...

Scientists who analysed nearly 16,000 ancient remains suggest red hair and fair skin is favoured for vitamin D production ...

A Harvard study indicates natural selection has favored red hair for millennia, suggesting redheads may become more common as ...

Dragonflies and humans can see colors similarly, thanks to a common protein in the eye that resulted from parallel evolution.