NASHVILLE, Tenn. (AP) - The Tennessee Department of Environment and Conservation had planned to offer free radon test kits through July 30.
However, due to such a large demand, their free supply was gone within hours of offering them on Monday.
Radon is a naturally occurring gas that can seep into homes through cracks and openings in the foundation. In concentrated levels, it can threaten human health. Federal statistics show it as the No. 1 cause of lung cancer among non-smokers in the United States.
The best time to use the kits is in cold weather, usually from October to March.
Learn more: http://www.tn.gov/environment/ea/radon/
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