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Tar Sands Get Tripped Up

Processing tar sands crude creates more air pollution than normal. (Photo courtesy of Argonne National Laboratory)
American gasoline refineries are expanding to process a dirtier kind of oil. Shawn Allee reports one company's plans hit a snag:
A related article from the Chicago Tribune
Producer: Shawn Allee
Release Date: October 22, 2009
Running Time: :51

