While many national governments struggle to take comprehensive action on climate change, major cities around the globe are acting on their own.
The Carbon Disclosure Project (CDP) recently released a report [PDF] tracking initiatives cities are taking to address their greenhouse gas emissions. Many of these municipal governments -- plagued by heat waves and flooding -- recognize the urgent need to mitigate and adapt to climate change.
Cities account for 70 percent of global emissions [PDF] while occupying just 2 percent of dry land. The 53 cities that publicly disclose citywide emissions together produce more than 977 million tonnes of CO2 -- or the equivalent emissions of Germany.