COLUMBUS, Ohio (WCMH) – Over 50% of buildings in Ohio that have undergone radon testing have elevated levels of the colorless and odorless gas, which is a leading cause of lung cancer in the United ...

Radon is all around us, but exposure to high levels can prove detrimental. Here's what you should know.

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 ...

Modern construction offers more energy-efficient buildings but also comes with one potentially deadly drawback: The air-tight structures are susceptible to radon gas buildup that can cause lung cancer ...

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EPA has set 4 picocuries of radon per liter (pCi/L) of air as an Action Level. For anyone who has a higher radon level than this, EPA, DEP, and the U.S. surgeon general recommend having a radon ...

In Colorado, as of 2025, about 500 people a year die from lung cancer as the result of radon gas exposure. Nationally, the number of lung cancer deaths attributed to radon is about 21,000 per year.