Nothing is more important to the survival of the Earth and everything that lives or grows on it than water. This is the story of how we use water, how we cope without it, and the many methods available for us to conserve it. Everything from torrential floods to severe desertification play a role in our management of this precious liquid. As water becomes increasingly scarce it is being treated as a commodity to be controlled for the benefit of one group of society at the expense of many others. As the prospect grows of countries going to war with one another to control water, this is the story of our most important resource.