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"By 2050, there could be as many people living in urban areas as are alive today." Cities already account for up to 70% of global CO2 emissions – and more than half of the world's GDP. Read Michael Heise's blog on how we can create the clean, green and prosperous cities of the future:
http://wef.ch/VKewgM

Image: http://wef.ch/VKewgN
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