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

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 …

Since the building can hold the radon similarly to smoke trapped under a glass, indoor radon concentrations can increase to many times that of outdoor levels. The only way to know the …

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 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 …

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 …

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 …

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 …

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, …

Radon is a cancer-causing, radioactive gas. It comes from the natural (radioactive) breakdown of uranium and radium in soil, rock, and water and is released into the air we breathe.