Radon is a radioactive gas that is released when uranium-a natural
element found in rock and soil-breaks down and decays. Radon can leak from the
ground into a home or other building through cracks in the foundation or gaps
around pipes.
Long-term exposure to radon has been linked to the development of
lung cancer.
Radon cannot be detected by human senses because it is odorless,
tasteless, and invisible. However, levels can be measured in enclosed spaces
with home test kits. Radon levels in homes and other buildings can be reduced
by using simple venting methods such as opening windows, installing vents in
basements or crawl spaces, and increasing air movement with ceiling
fans.