2014 sports stories
Just how dirty is the air you breathe? The American Lung Association has released its latest list of the most polluted U.S. cities.
Just how dirty is the air you breathe? The American Lung Association's annual report of the most polluted cities in the U.S. rates communities on levels of ozone, sulfur dioxide, air-borne particulates and tainted tap water. Here are the 20 cities most polluted by year-round particle pollution:
"A Christmas Carol" is first published, the NHL plays its first games, Apollo 17 splashes down, and the U.S. House impeaches President Bill Clinton, all on this day.
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