3 days ago · 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 have a big impact on …

Dec 15, 2025 · Radon is a radioactive gas that comes from the natural breakdown of uranium in the ground. It is a natural part of the air we breathe and is the largest source of an average person's …

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 home's …

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 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 most …

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 heavier …

Radon is a cancer-causing, radioactive gas that you can’t see, smell, or taste. As naturally occurring radioactive materials break down in the soil, radon gas is emitted as a by-product and can collect in …

6 days ago · January is National Radon Action Month, and the American Lung Association is raising awareness of the potential health risks of radon and the importance of home testing. Exposure to …

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

Aug 15, 2025 · What did the National Academy of Sciences have to say about radon? Does the 2009 World Health Organization's recommendation of a lower radon action level affect the EPA's radon …