How did life start? How did something capable of replicating itself emerge from the primordial soup? How did it defy the odds? And how did it carry on seeking out the very mutations that enable survival? Living organisms are controlled by a single molecule - DNA. Yet the study of physics tells us that the behaviour of single molecules is also controlled by the laws of quantum mechanics. The implications of this for biology result in Johnjoe McFadden's theory of quantum evolution. He shows how living organisms have the ability to will themselves into action. Indeed, such an ability may be life's most fundamental attribute. This has radical implications. Evolution may not be random at all, as recent evolutionary theories have taught: rather, cells may, in certain circumstances, be able to choose to mutate particular genes that provide an advantage in the environment in which the cell finds itself.