The Environmental Protection Agency's is issuing new limits on emissions by coal-burning plants that new plants will need advanced carbon-capture technology to comply.
With the financial help of Internet company Alibaba, Liu Chunlei has been crowdsourcing so-called 'Danger Maps' to make pollution information publicly available.
Beijing has announced it will add 50 miles of subway track by the end of next year, making the city's subway system bigger than New York's. But will the new additions alleviate the city's notorious traffic and pollution?