A fascinating and unputdownable exploration of the limits of human knowledge of our planet, its history and culture, and the universe beyond, from the author of The Things that Nobody Knows.

William Hartston is a Cambridge-educated mathematician and an international chess master. He writes the off-beat Beachcomber column for the Daily Express and is the author of a number of books on chess, mathematics, humour and trivia. Hartston is also one of the viewers on Channel 4's Gogglebox.