Radon is a naturally occurring, radioactive gas that can enter your home or apartment in a number of ways. Radon is a carcinogen, which means that it causes cancer. When we think of lung cancer, it is likely that radon doesn’t come to mind, but exposure to this gas is the second leading cause of lung cancer in the United States next to smoking. According to the Environmental Protection Agency, it is expected that exposure to this gas kills 21,000 people each year. Because radon cannot be seen, smelled or tasted, most people are unaware that it is in their home. Fortunately, there are steps you can take to make sure that you and your family are safe from the danger of radon.
Source : http://auburnpub.com/lifestyles/cayuga-county-health-department-what-to-know-this-radon-action/article_08fafb69-d470-5a05-800f-ad107cea95d1.html