Climate change is a global problem that requires local action. Individual nations are reluctant to act without international cooperation, but global agreements are difficult to reach. China is the world's largest carbon emitter and many of its cities have severe air pollution problems. Implementing a carbon pricing scheme, such as China's national cap-and-trade program, could help reduce emissions and pollution levels while generating revenue to offset costs to consumers. Carbon pricing provides incentives to lower individual carbon footprints while protecting the poor.