People with ginger locks are head and shoulders above blondes or brunettes when it comes to coping with pain, researchers claim. Scientists have found that the gene responsible for flame-coloured hair also produces a morphine-type substance that acts like an anaesthetic and reduces pain. When researchers at the Medical Research Council in London introduced the gene in mice, they found the rodents could withstand more pain than normal. "Seventy per cent of redheads are redheads because a particular gene doesn't work," Prof. Jeff Mogil of Montreal's McGill University, told CTV News. "This is a gene that would otherwise give you...