Sustainable cities to watch in 2012

Think of sustainability, and San Francisco is probably the first city to come to mind. But a new crop of green urban centers is emerging, and they're not where you might think.

Leon Kaye, editor of GreenGoPost.com, recently published a list of his picks for emerging sustainable cities to watch in 2012. Some spots were to be expected, like Detroit, with its preponderance of urban renewal projects, and Accra, which recently topped Siemens' and Economist Intelligence Unit's index of Africa's greenest cities.

But there were also a few wild cards. Mexico City made the list for its 10-point Climate Action Program, which aimed to reduce greenhouse gas emissions by 7 million metric tones between 2008 and 2012. The plan included massive improvements to the public transportation system, including the construction of Latin America's largest rail system and investments in green roofing, water conservation, and waste management.

Also on the list was Naples, Italy, whose trash crisis has made headlines since 2008. Once city residents started realizing that the government wasn't going to take action, they started taking matters into their own hands. Through grassroots activist movements, like guerrilla gardening and flash mobs, Neapolitans are slowly beautifying their city, and this year will host the UN's World Urban Forum.

The other cities on Kaye's watch list were Adelaide, Australia; Belgrade, Serbia; Brasilia, Brazil; Doha, Qatar; San Jose, California; and Seoul, Korea.

[Flickr image of Mexico City via Alfredo Gayou]

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