Mayors urge decisive climate action, seeking global 'decade of delivery'
Calling themselves 'climate doers,' city leaders criticized a lack of ambition among some nations toward the Paris treaty goals.
C40
The C40 is a global network of nearly 100 major cities committed to taking collaborative, science-based action on climate change. It works to halve emissions within a decade and accelerate the transition to a healthier, more sustainable future for urban residents.
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With U.N. notification, Trump triggers U.S. exit from climate treaty
On the first day possible, the U.S. alerted the U.N. that it will withdraw from the 2015 Paris Agreement a year from now.