Lenton and Watson have written a remarkable and timely book which is both entertaining and impeccably researched from the beginning I felt both engaged and enlightened... With its academic rigour and, at the same time, its accessibility, the authors have clearly succeeded in their aim of writing scholarly popular science. As such, it should inspire us to learn from how the Earth system has evolved in the past and face up to the final question: Are we as yet sufficiently grown up to take responsibility for a whole planet? One thing is for sure: Over the nextcentury we will find out. Peter Horton, Chemistry World Worth close study for anyone with more than a passing interest in the Earth sciences, from geology to climatology, and for anyone curious about why this planet is alive whilst all the other ones we know about are dead. Mark Lynas fascinating book . Oliver Morton, The Economist Lenton and Watson's thought-provoking book is the latest in a distinguished line of works that have altered our perception of the planet. Wolfgang Lucht, Nature This book is a stimulating read that involves its audience and challenges us to enlarge our awareness of many branches of human knowledge. It embraces the ethical question of how we can overcome our selfish genes to co-operate with our fellow human beings and recognise our symbiotic relationship with the Earth ecosystem that sustains us. Susan Jappie, A World to Win