EPA – “Radon is the second leading cause of lung cancer in the United States and is estimated to be responsible for more than 20,000 lung cancer deaths each year. You can’t see, smell, or taste radon–it’s a radioactive gas that comes from the natural breakdown of uranium in soil, rock, and water and gets into the air you breathe. Radon can be present outdoors and in any type of building, but you’re likely to get the most exposure to radon in your own home. To help protect your health, you can test your home for radon and take measures to lower radon levels if needed.”