This book addresses the question of how life may have arisen on earth, in the spirit of an intriguing detective story. It relies on the methods of Sherlock Holmes, in particular his principle that one should use the most paradoxical features of a case to crack it. This approach to the essential biological problems is not merely light-hearted, but a fascinating scrutiny of some very fundamental questions. 'I know of no other book that succeeds as well as this one in maintaining the central question in focus throughout. It is a summary of the best evolutionary thinking as applied to the origins...