Levels of cancer-causing radon gas in Pennsylvania homes have increased as the fracking industry has expanded, a new study shows. USA Today. 9 April 2015.
http://www.usatoday.com/story/news/2015/04/09/radon-fracking-study/25466893/
Levels of cancer-causing radon gas in Pennsylvania homes have increased as the fracking industry has expanded, a new study shows. USA Today. 9 April 2015.
http://www.usatoday.com/story/news/2015/04/09/radon-fracking-study/25466893/