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  1. Radon - Wikipedia

    Radon is a contaminant that affects indoor air quality worldwide. According to the United States Environmental Protection Agency (EPA), radon is the second most frequent cause of lung …

  2. Radon | US EPA

    Sep 5, 2025 · Radon is a naturally occurring radioactive gas that can cause lung cancer. You can’t see or smell radon. Testing is the only way to know your level of exposure. Radon can …

  3. Radon and Your Health | Radon | CDC

    Feb 16, 2024 · Radon is an odorless and invisible radioactive gas naturally released from rocks, soil, and water. Radon can get trapped inside homes and buildings, and build up in the air. …

  4. Radon Gas: Causes, Exposure, Symptoms & Complications

    Radon is a radioactive substance, which means it emits radiation (a type of energy). Radiation can damage your cells, leading to cancer. Experts estimate that radon exposure is the second …

  5. Radon Gas Exposure & Poisoning: Symptoms, Health Effects

    Aug 7, 2024 · You can't see, feel, taste, or smell it, but radon can be present anywhere. Learn more about this radioactive gas and how to keep your exposure low.

  6. Radon.org - Your Trusted Source for Radon Information

    Radon is a noble gas with the chemical symbol Rn and atomic number 86. It is unique among the noble gases due to its radioactivity. Radon is produced from the decay of uranium, which is …

  7. How to Reduce Radon - This Old House

    When a homeowner inherited a house, he also inherited radon. With Ross Trethewey and a local mitigation technician, a mitigation system is installed to keep the homeowner and his dog safe.

  8. Radon | Radon | CDC

    Information about how radon gets into your home, how it affects you, and how to reduce it.

  9. The hidden risks of radon: MDH expert explains the danger

    5 days ago · Radon is a colorless and odorless gas that comes from the soil and can accumulate in your home. But how do you test for it? We talked with an MDH expert to learn more about …

  10. Radon Risks and Solutions - US EPA

    Jul 16, 2025 · Radon is a naturally occurring radioactive gas that can enter homes from the ground and build up to dangerous levels. Learn how you can reduce your risk and exposure to …