Neighborhood groups scored their most significant victory in recent memory today when the mayor agreed to a number of changes to the city’s new urban master plan.

I’m in Mexico City this weekend, blogging from a conference on cities and climate change at the invitation of Siemens.

With the world’s attention focused on climate change talks in Copenhagen, where world leaders may or may not reach an agreement by the end of the week, a parallel gathering in Istanbul is exploring practical solutions to the climate challenge.

This editorial calling for action from world leaders on climate change is being published today by 56 newspapers around the world in 20 languages.