Water scarcity's effect on food production means radical steps will be needed to feed a population expected to reach nine billion by 2050, warns Stockholm International Water Institute
In an exclusive extract from his new book, World on the Edge, Lester Brown outlines fresh ways of thinking about water and land use in order to sustain the world's growing population
Watching our leaky taps is the least of our problems when it comes to water wastage - agricultural practices and animal products are by far the greater danger