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April 2, 2013 About 1.2 million people die prematurely every year in China from exposure to outdoor air pollution. Smog has dogged the country as it grows at an explosive rate and burns huge quantities of fossil fuels. But there are signs that the government is beginning to take the issue more seriously.

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January 29, 2013 Air quality readings put the Chinese capital's air in the hazardous zone; visibility is less than 200 yards in some parts of the city.

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January 15, 2013 Pollution around Beijing has been stifling for the past few days. NASA has released a pair of satellite images, showing the extent of the smog from space and how the air has changed in the past couple weeks.

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March 1, 2012 Early last year 31 people got sick after spending time at an indoor ice arena owned by a private school in New Hampshire. Poor ventilation of exhaust from a machine used to resurface the ice turned out to be a big problem.

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November 2, 2011 Even if people used bikes to run short errands than half the time, it could save more than 1,100 lives a year in 11 Midwestern cities, thanks to reduced air pollution and improved health. That's the word from scientists at the University of Wisconsin, who figured people would bike 4 months out of the year.

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June 30, 2011 The aluminum giant Alcoa wants to fight smog with a new building product. The company says its panels clean the air as well as trees, but research suggests trees can remove some pollutants the panels can't.

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