Emissions Have Already Peaked in 27 Cities—And Keep Falling

Nothing against the countryside, which is lovely, but cities are where things happen. They are magnets for trade, and they're where cultures meet. They're also where more than half the world’s population lives, a number that will only continue to grow. Cities are also now serving as a unique testbed for responses to climate change—bolstering public transportation, erecting more efficient buildings, deploying renewable energy.

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