vanishing redheads

Scientists believe the gene that causes red hair is an evolutionary response to cloudy skies and allows inhabitants to get as much Vitamin D as possible. But if predictions of rising temperatures and blazing sunshine across the British Isles turn out to be correct, flaming red heads could cease to exist within centuries.

Dr Alistair Moffat, managing director of Galashiels-based ScotlandsDNA, said: “We think red hair in Scotland, Ireland and in the North of England is adaption to the climate.”
The Mirror(UK), 6 Jul 2014

thanks to Andrew Mark Harding