Radon is a contaminant that affects indoor air quality worldwide. Because radon is denser than air it accumulates in basements and crawlspaces under dwellings.

Apr 13, 2023 · Long-term exposure to high levels of radon can be dangerous to your health. Learn where you’re likely to find high levels of radon, how to test for it, and how it can impact your …

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. …

Nov 13, 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 …

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 …

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 …

Jul 16, 2025 · Learn about radon, how it affects lung health and what you can do about it. What Is Radon? Radon is a colorless, tasteless and odorless gas that causes lung cancer. Exposure …

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.

Feb 15, 2019 · Radon is a cancer-causing radioactive gas. You can’t see, smell, or taste radon. But it may be a problem in your home. It is the second leading cause of lung cancer and the …

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