Preface -- Megacities and Global Change -- Megacities and Climate Change: Early Adapters, Mainstream Adapters, and Capacities -- Underground cities -- Water quality and socio-ecological vulnerability regarding urban development in selected case studies of megacity Guangzhou, China -- Rice for the Megacity. Dhaka's food supply between global risks and local vulnerabilities -- Land development strategies in megacities: Guiding land use and land rights in the context of urban sprawl and informality -- The influence of foreign direct investment on land use changes and regional planning in developing- World megacities: a Bangalore case study -- Inner-city development in megacities between degradation and renewal. The case of Sao Paulo case study -- Agile Firm Organisation and Upgrading in the Greater Pearl River Delta -- Linking Global Change, National Development Goals, Urbanization and International Migration in China: The Example of African Migrants in Guangzhou and Foshan -- "Phobopolis": Violence, fear and socio-political fragmentation of the space in Rio de Janeiro, Brazil -- Dar es Salaam, megacity of tomorrow - informal urban expansion and the provision of technical infrastructure -- Bus Rapid Transit: the answer to transport problems in megacities? The example of TransMilenio (Bogotá / Colombia) -- Governance in Megacities: Experiences, Challenges, and Implications for International Cooperation -- Managing the Metropolis - Planning in New York City -- E-Governance Initiatives in India; Case Studies from Hyderabad and Bangalore. As urbanization continues, and even accelerates, scientists estimate that by 2015 the world will have up to 60 'megacities' - urban areas with more than five million inhabitants. With the irresistible economic attractions of urban centers, particularly in developing countries, making the influx of citizens unstoppable, many of humankind's coming social, economic and political dramas will be played out in megacities. This book shows how geographers and Earth scientists are contributing to a better understanding of megacities. The contributors analyze the impact of socio-economic and political activities on environmental change and vice versa, and identify solutions to the worst problems. They propose ways of improving the management of megacities and achieving a greater degree of sustainability in their development. The goals, of wise use of human and natural resources, risk reduction (both social and environmental) and quality of life enhancement, are agreed upon. But, as this text proves, the means of achieving these ends are varied. Hence, chapters cover an array of topics, from health management in Indian megacities, to planning in New York, to transport solutions for the chronically traffic-choked Bangkok. Authors cover the impact of climate change on megacities, as well as less tangible issues such as socio-political fragmentation in the urban areas of Rio de Janeiro. This exploration of some of the most crucial issues that we face as a species sets out research that is of the utmost importance, with the potential to contribute substantially to global justice and peace - and thereby prosperity.