(UNDATED) - January is "National Radon Action Month."
The Environmental Protection Agency reports 20,000 deaths a year from the odorless gas.
Indiana State Department of Health Radiation Specialist Mary Styker says Radon is created naturally underground and can seep into homes.
People who breathe in Radon can develop lung cancer.
Officials say Radon is the second leading cause of lung cancer in smokers and the leading cause in non-smokers.
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