From the day he was born - 23 Tune 1912 - Alan Mathison Turing seemed destined to solitude, misunderstanding and persecution (see page 441). As his centenary year opens, Nature hails him as one of the top scientific minds of all time (see page 440). This special issue sweeps through Turing's innumerable achievements, taking us from his most famous roles-wartime code-breaker and founder of computer science (see page 459) - to his lesser known interests of botany, neural nets, unorganized machines, quantum physics and, well, ghosts (see page 562).
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