Originally published in 1977 and as second edition in 1979, this book argues that without energy sources on a vast scale our present society cannot survive. According to the author, Fred Hoyle, the technology to tap solar, wind or wave power on a large enough scale just does not exist. He considers nuclear fission to be the only source currently capable of supplying our needs. The author fills in the scientific background necessary to appreciate his arguments in his lucid, direct style, so that the book can act as an ideal introduction for those unfamiliar with the energy debate. This short book is unashamedly provocative and many of the central tenets of it remain as relevant today as when it was first published.