Although radon is a naturally occurring gas in our environment, it’s also the second leading cause of lung cancer deaths in the U.S. according to the Surgeon General. Radon is colorless and odorless, but in elevated amounts indoors, it can be deadly. Nearly one out of every 15 homes is estimated to have elevated radon levels. The Surgeon General and the Environmental Protection Agency recommend testing all houses. Millions of Americans have had their homes tested for radon and you should, too.