Alan Turing was long famous in computer science and then became notable due to his sexuality and its controversy in England. Less well known is his work in biology and chemistry.
During World War II, Turing helped cracked the German Enigma Code, which made it possible to decipher enemy transmissions. After the war, he was convicted of homosexuality — a criminal offense in England — and sentenced to chemical castration. Shortly after his trial, and before he killed himself in 1954, he published a biology paper, "The Chemical Basis of Morphogenesis."