David Bowie in The Man Who Fell to Earth, 1976Red hair occurs naturally in just 1–2% of the human population. Yet, despite their paucity – and the innumerable slurs they incur thanks only to their hair’s unusual shade – the auburn, ginger and strawberry blonde have always held positions of power, loathing and acclaim. From Boudicca, Judas Iscariot and Elizabeth I, to Nell Gwyn, Rita Hayworth and Lindsay Lohan, they have dominated history’s headlines, and An...