Radon — an odorless, colorless gas that seeps from uranium in the soil — accounts for more than half of the ionizing radiation most people encounter in their lives. When inhaled, this radioactive gas can set the stage for lung cancer.
Read more; http://www.latimes.com/health/la-he-overradiated-radon-20101011,0,6604216.story
Read more; http://www.latimes.com/health/la-he-overradiated-radon-20101011,0,6604216.story
Article courtesy of The Los Angeles Times by Chris Woolston