'The environmentalist's bible,' Times Higher Education Supplement. 'Essential reading,' The Good Book Guide In this 24th edition of State of the World, long established as the most authoritative and accessible annual guide to our progress towards a sustainable future, continues to provide the studies that pay particular attention to cities. In 2007, world population will tip from mostly rural to mostly urban. Already, some 1 billion individuals, one in every three urbanites, live in 'slums', some 90% of which are found in Africa, Asia, and Latin America. Published annually in 28 languages, State of the World is relied upon by national governments, UN agencies, development workers and law-makers for its authoritative and up-to-the-minute analysis and information. It is essential for anyone concerned with building a positive, global future. Featuring case studies of cities from Melbourne to Malmö to Timbuktu. This year's edition covers: an urbanizing world; providing clean water and sanitation; farming the cities; greening urban transportation; energizing cities; natural disaster risk in cities; charting a new course for urban public health; strengthening local economies; and, fighting poverty and environmental injustice in cities.