Blondes might have more fun, and gentlemen may well marry brunettes, but redheads are remembered. For while they have had a troubled history - being burned as witches, sacrificed to gods and condemned as unlucky or insane, to give just a few examples, there has always been an edgy glamour attached to women with red hair, from Cleopatra to Rita Hayworth to Julianne Moore. A recent report by the Oxford Hair Foundation in the UK has caused shockwaves in the Netherlands: redheads, it says, are dying out, and could become extinct as soon as 2060. The two main factors involved...