Radon is a naturally occurring radioactive gas which comes from uranium-containing rocks in the ground. As uranium decays, radon is produced in proportion to amount of uranium containing rocks in the area. This odorless, colorless, and tasteless gas can accumulate in basements, and presents an exposure risk to occupants living in the home. According to the EPA, radon gas is the second leading cause of lung cancer in the US (smoking is the leading cause). This is why it is important for homeowners to understand the hazards presented by radon, testing methodologies, and mitigation for high levels. For further information, please click on the following link.  https://www.epa.gov/radon/home-buyers-and-sellers-guide-radon