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Cities and climate change are intrinsically linked. Home to half the world’s population and growing rapidly, cities consume over two-thirds of the world’s energy and account for more than 70 percent of global CO2 emissions. At the same time, some of the greatest hazards of climate change, from rising sea levels to heat waves, threaten cities most directly.

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The C40 will host the fourth Annual C40 Mayors Summit in Sao Paulo, Brazil, taking place from May 31st to June 2nd, 2011. The summit provides a forum for mayors from around the world to discuss best practices to address climate change and reduce greenhouse gas emissions. C40 Live will be our way of communicating information about summit happenings and share news, developments and insights from the summit. We also hope it can serve as a resource for all things C40.

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