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:
National Media Museum
Vincent van Gogh dies, the Summer Olympics return after World War II, Jack Paar debuts on the "Tonight" show, Dylan crashes his motorcycle, and Prince Charles marries Diana, all on this day.
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