This book brings together in a single volume a grand overview of solutions - political, economic, and scientific - to social and environmental problems that are related to the growth of human populations in areas that can least cope with them now. Through progressive adaptation to social and environmental changes projected for the future, including population growth, global warming/climate change, water deficits, and increasing competition for other natural resources, the world may be able to achieve a fair degree of sustainability for some time into the future.