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.
Can building exteriors really eat smog in cities like Los Angeles, pictured here?
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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