By 2030, nearly 5 billion people, or 60% of the world's projected population, will live in cities. As described in a special section of the 8 February 2008 issue of Science, these hot spots of production, consumption, and creative thinking present both the problems and solutions to the sustainability challenges that face an increasingly urbanized world.
In this video presentation, Michael Batty of University College London, Jesse Ausubel of The Rockefeller University, Nancy Grimm of Arizona State University, and Science's Asia news editor Richard Stone discuss the implications of the mass embrace of city life around the globe.
In the same issue, there are several very interesting articles on cities - including what the city of the future will look like.
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