Date Published: 07/06/2009 [Source]
A Team 4 investigation finds more than half of all areas in western Pennsylvania have high levels of radon -- a cancer-causing gas.
Team 4 obtained records showing 57 percent of all western Pennsylvania ZIP codes have levels higher than 4, and some ZIP codes have an average as high as 40. They also learned the state Department of Environmental Protection does not tell people they have a problem unless their score is 100.