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5 Green Cities of the Future

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Because most urban areas gobble up resources, theyre a good place to focus environmental efforts. See moregreen living pictures. Stephen Studd/Photographers Choice/Getty Images ­Single-car drivers commuting in fossil-fuel burning cars, smog­, pollution, crime — what other ur­ban scourges can you think of? Half of the worldspopulationcurrently live­s in urban areas; yet these urban areas make …