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Tribune News Service
Tribune News Service
Lifestyle
Mayo Clinic Staff

Radon: The odorless, invisible threat

Cancer Lung Cancer EPA

Radon is an odorless, invisible radioactive gas. It's naturally released from rocks, soil and water — and it can get trapped inside your home, office or school. There's no known safe level of radon.

Unfortunately, there are no symptoms of radon exposure as there are with carbon monoxide poisoning.

What makes radon so dangerous

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