Why can't you light a candle in a spaceship? What books are bad for you? Is nature natural? Every year Oxford and Cambridge's learned professors pose such curious conundrums to potential students to separate the wheat from the chaff, and the clever from the both of them. Do You Think You're Clever? provides dazzling answers to 60 of these infamously perplexing problems...How would you measure up against Oxbridge's sharpest minds?