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What is radon?

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A decade ago, media hype caused both panic and skepticism about the risks and effects of radon. Now, better research has made two things clear: Elevated levels of radon over a long period of time can cause lung cancer, and there are effective ways to reduce these levels. read more

Exposure to radon is the second leading cause of lung cancer after smoking. Radon is a colorless, odorless, tasteless and invisible gas produced by the decay of naturally occurring uranium in soil and water. read more

Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas. read more

Radon gas given off by soil or rock can enter buildings through cracks in floors or walls; construction joints; or gaps in foundations around pipes, wires, or pumps. Radon levels are usually highest in the basement or crawl space. This level is closest to the soil or rock that is the source of the radon. read more

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Radon and Cancer
www.cancer.org

What Is Radon?
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