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:
The following five celebrity urban legends will likely live on long into the future, despite the fact that none of them is remotely true.
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With Katy Perry set to headline the halftime show at Super Bowl XLIX, check out who has performed at past Super Bowls.