Their genes are exactly the same, so why don't identical siblings' lives follow more similar patterns? The scientist behind a pioneering 21-year study believes he has the answer, as he tells Robin McKie
World Autism Day is on 2 April and new funding is in place to research the causes of the condition. But the programme now desperately needs tissue donors
Professor Roger Kirby is one of the world's leading prostate surgeons. So when he developed prostate cancer last year he knew exactly what he was up against. He tells Simon Garfield about his operation – and life as a patient