
Radon - Wikipedia
Radon is a contaminant that affects indoor air quality worldwide. Because radon is denser than air it accumulates in basements and crawlspaces under dwellings.
Radon | US EPA
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 and Your Health | Radon | CDC
Dec 11, 2025 · Radon is an odorless, invisible, radioactive gas naturally released from rocks, soil, and water. Radon can get into homes and buildings through soil, small cracks or holes in your …
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 …
Radon - American Lung Association
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 …
What is radon? How can you test for it in your home? What you …
Nov 20, 2025 · Radon, the second-leading cause of lung cancer, affects an estimated 50% of Ohio homes. The state lacks testing mandates despite known health risks and widespread …
Radon | Definition, Properties, Effects, & Facts | Britannica
Dec 11, 2025 · Radon, chemical element, a heavy radioactive gas of Group 18 (noble gases) of the periodic table, generated by the radioactive decay of radium. It is a colorless gas, 7.5 times …
Radon - World Health Organization (WHO)
Jan 25, 2023 · Radon is one of the leading causes of lung cancer. Radon is estimated to cause between 3% to 14% of all lung cancers in a country, depending on the national average radon …
Radon | National Institute of Environmental Health Sciences
Sep 10, 2025 · Radon is a naturally occurring radioactive gas that is colorless and odorless. Radon comes from the natural decay of uranium or thorium, elements found in rocks, soils, …
See Your Risk: Updated Radon Levels by Zip Code - Radon.org
Radon is a radioactive gas produced from the natural decay of uranium found in soil, rocks, and water. It is a silent intruder that can stealthily infiltrate our homes, especially in poorly …