Guardian: Once notorious for air pollution, Mexico Citys ability to clean its skies has shown it can also be a leader in reducing emissions of greenhouse gases, according to the citys mayor, Miguel Angel Mancera.
Speaking at the signing of a new pledge to commit the equivalent of 10% of the citys discretionary budget to defined resilience goals many of which are environment-related Mancera stressed the role that megacities will have to play in tackling global warming.
Cities are drivers for...