Cities won't wait for national governments to solve their pressing problems, argues Michael Bloomberg, the mayor of New York City in this week's Economist:
In developing the climate-change strategies that underpin PlanNYC, we drew on the experiences of Berlin for our renewable-energy and green-roof policies; Hong Kong, Shanghai and Delhi for our innovative transit improvements; Copenhagen for our pedestrian and cycling upgrades; Chicago and Los Angeles for our plan to plant 1m more trees; Amsterdam and Tokyo for our transit-oriented development policies; and Bogotá for our plans for Bus Rapid Transit.