During January's National Radon Action Month, the American Lung Association recommends every household test for radon gas to safeguard health and prevent lung cancer CHICAGO, Jan.

Max Filby is an investigative reporter for The Columbus Dispatch, where he has worked for more than six years. Fliby led The Dispatch's "Invisible Killer" investigation into how federal, state and local leaders fail to protect Ohioans from radon -- an odorless, colorless gas known as the leading cause of lung cancer among nonsmokers that's also been linked to leukemia, stroke and heart attacks.