Olympic gains: Study highlights China's air pollution progress since 2008
Beijing Olympics: Emergency anti-smog plan announced for 'Greyjing', Environment
China Hopes For 'Green' Olympics But Prepares to Fight Smog
Beijing sees heavy pollution ahead of Olympics - The Washington Post
Beijing sees heavy pollution ahead of Olympics - The Washington Post
China talks up 'green' Olympics but prepares to fight smog
China's Winter Olympics are carbon-neutral — how?
Beijing sees heavy pollution ahead of Olympics - The Washington Post
Beijing sees heavy pollution ahead of Olympics - The Washington Post