There is a silent threat building up in the basements and crawl spaces of millions of American homes, and most people have no idea it is there. Radon is a naturally occurring radioactive gas that is ...

Risk maps for the cancer-causing gas radon can encourage people to test their homes for the substance, but only if homeowners live in known, higher-risk areas, new University of Oregon research finds.

Groveport Madison Schools will test and mitigate for radon in all its buildings this winter. One elementary school had a radon test result seven times higher than the EPA's recommended action level.

DEAR MAYO CLINIC: Our neighbors were selling their home and had it tested for radon. The test was positive. Why should we be concerned about radon, and should we have our home tested too? ANSWER: The ...

A Democratic lawmaker has introduced two bills in the Ohio House that would require testing homes and schools for radon, an odorless and toxic gas that's been linked to cancer and other health issues.