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World urbanization brings some of our greatest challenges: air and water pollution, demand on water resources, pressure on land for development, agriculture, materials, stress on ecosystems, among others. Because of their impact and influence, cities hold exceptional promise for positive global change.


Scientists, engineers, urban planners, architects, and many more continue to generate, test and improve creative solutions for sustainability. We’re collecting these diverse ideas, not to endorse any single solution, but to feed your curiosity and imagination – the future is in our hands.

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Disclaimer: The organizations or companies linked here do not amount to an endorsement by the Cool Cities team.


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