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Cool Green Cities: Smart Projects in Copenhagen, Portland, Paris & More
Impact
From a Day Without Cars and gardens atop shopping malls to a cloud forest in a major city, a look at smart projects from around the world.
Corbis (2), AP, Getty
Corbis (2), AP, Getty
Stan Honda/AFP/Getty
Stefano Amantini/Corbis
Don Ryan/AP
Fernando Vergara/AP
Khan Tariq Mikkel/Polfoto, via AP
Bertrand Gardel/Corbis
