One of the most pressing questions confronting the world is: how can we create a vibrant world economy that does nor destroy the ecosystem on which it is based? The natural systems on which humanity depends are crumbing and business as usual will rapidly render much of the planet uninhabitable. We have to find an alternative. This book describres a global economy that does not compromise the prospects of future generations. What should replace fossil fuels? Hoe can a larger population feed itself? How can we satisfy material needs without political decisions that need to be taken, such as the ways in which tax systems need to be restructured to promote the shift to a sustainable society.