In "State of the World 2007," the Worldwatch Institute's award-winning research team focuses on the urbanization of our planet to provide policymakers, strategic planners, researchers, students, and concerned citizens with comprehensive analysis of the global environmental problems we face, together with descriptions of practical, innovative solutions. This report will show what is needed to foster sustainable cities on a planet where urban areas are home to half the human population and a far larger share of natural resource use. Written in clear and concise language, with easy-to-read charts and tables, "State of the World 2007" presents a view of our changing world that we, and our leaders, cannot afford to ignore.