The post below on the US Mayors Climate Protection Agreement was prompted by this week's C40 Climate Summit in New York City, meeting of the mayors of some of the largest cities in the world, hosted by the Clinton Foundation.
Choice quote from New York City Michael Bloomberg:
Mayors are leading, quite frankly, because we have to. Mayors can't wait for the future.
Newton isn't New York City, London, Paris, Stockholm, or any of the other large cities where aggressive measures have been taken to combat global warming. We are part of a larger ecosystem with elements we don't control.
But, the gist of Mayor Bloomberg's comments still apply. It's at the city or regional level where decisions are going to be made that make a difference: land use, public transportation, parking, &c.