Radon, a radioactive gas, is the leading cause of lung cancer among nonsmokers and is present at high levels in many Ohio homes. Radon forms from decaying metals in soil, entering homes through ...

PITTSBURGH (KDKA) — About 40% of Pennsylvania homes have elevated levels of radon, something Allegheny County officials hope to help combat by handing out free radon test kits this month. A report ...

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.

(Editor's Note: This story has been updated to reflect the correct amount of radon found in Dunloe Elementary after a school district official misspoke during a board meeting about the levels detected ...