Redheads could become extinct, thanks to climate change

Only 1 to 2 percent of people in the world have red hair — and that number could continue to decrease due to climate change, scientists warn. In Scotland, 13 percent of the population has red hair, which is believed to be an evolutionary response to the lack of sun. If temperatures continue to rise and the sun isn't blocked as often by clouds, the gene responsible for red hair could regress. "We think red hair in Scotland, Ireland, and in the north of England is adaption to the climate," Dr. A...