Shanghai is considering imposing a traffic congestion charge in order to fight pollution. Singapore and London already charge motorists more for driving into the city center at peak hours, and Shanghai is poised to become the first city in China to adopt similar road pricing. Cities throughout China—the world’s biggest carbon emitter—are working on pollution control; last week Beijing announced rules to reduce the number of government and private vehicles on the roads and close schools when pollution is at its worst. Shanghai also plans to build infrastructure to support alternative-energy vehicles, look into raising emission standards, and incentivize the use of cleaner vehicles. Additionally, the city has pledged to cut levels of PM2.5—the most damaging particulate matter—by 20 percent by 2017. For the full story, see