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

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. Over time, …

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 have a big impact …

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 …

What is radon? Radon is a colorless, odorless, tasteless, radioactive gas produced during the natural decay of uranium (an element that occurs in small amounts in rock and soil).

Radon is a hazardous, naturally occurring gas that results from the decay of trace amounts of uranium found in the earth's crust. Odorless and invisible, radon has been classified (by the Environmental …

Radon is a radioactive element that is part of the radioactive decay chain of naturally occurring uranium in soil. You can't see, smell, or taste radon, and unlike carbon monoxide and many other home …

Jun 5, 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, and water.

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

4 days ago · 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 radon. For …