Radon

A toxic gas found in the soil beneath a house that can contribute to cancer and other illnesses.

A radioactive gas found in some homes that, if occurring in strong enough concentrations, can cause health problems.

(RAY-don) A radioactive gas that is released by uranium, a substance found in soil and rock. Breathing in too much radon can damage lung cells and may lead to lung cancer.

(RAY-dahn): An odorless, colorless gas known to increase risk of cancer. Radon comes from rocks and dirt and can get trapped in houses and buildings.

A naturally occurring radioactive gas found in the U.S. in nearly all types of soil, rock, and water. It can migrate into most buildings. Studies have linked high concentrations of radon to lung cancer.