 Music's changed, and so have prices. Gas is almost three bucks a gallon. A decent house costs a quarter of a million, and a pack of cigarettes is about five bucks. But now, there's another cancer warning from the U.S. Surgeon General. Radon causes lung cancer, and radon can cause lung cancer whether you smoke or not. Radon is an invisible, odorless gas that seeps into your home from underground.