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:
Pablo Picasso is born, the first domestic microwave oven goes on sale, Led Zeppelin debuts in concert, the U.S. invades Grenada, and Bill Buckner blows it for the Red Sox, all on this day.
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