Hundreds of Cities Poised to Replicate Rio’s Approach to Measuring and Reducing Emissions
Rio de Janeiro is one of the world’s leading cities injecting sustainability into its planning. In 2011, Mayor Eduardo Paes enacted an ambitious climate change law, setting a goal to avoid 20 percent of its emissions by 2020, based on 2005 levels. There was only one problem: The city wasn’t sure just how much it was emitting, or where its emissions were coming from.