Radon is a radioactive gas which comes from the decay of uranium in the ground. The EPA claims that it is a health hazard and causes cancer in people and animals exposed to it, though many conservative commentators and some industrial hygienists state that the dangers are significantly exaggerated.
- Connell, C.P. Radon: Truth vs. myth; Forensic Applications Consulting Technologies, Inc. 
|Periodic Table of the Elements|