Patrick Moore is Britain's most respected and best-loved astronomer. In "Countdown!" he examines the multifarious theories of how and when the world will end, from St Augustine to the Millennium Bug, via Nostradamus. With a healthy dose of irreverent humour, he investigates and dismisses the weird and wonderful predictions of sometimes imminent cataclysm, before turning to the science of what might really happen (a long, long time in the future, thankfully). Written with his trademark combination of wit and accessible science, and updated to include the latest theories on asteroids and climate change, this is a must-read book for anyone with an interest in popular science in general, and how the world might end in particular.