Radon 1 is possessed by David Coffee and developed Radon 1 in 2008. Radon is an odorless and also invisible gas discharged. Radon is the 2nd leading cause of lung cancer cells in the U.S., resulting in an approximated 21,000 unfortunatedeaths each year. Tennessee is still a hotbed for radon. Radon levels are gauged by units of radioactivity a quantity of air, called picocuries per litre (de Ci/L).