Radon is a radioactive gas that forms naturally when uranium, thorium, or radium, which are radioactive metals break down in rocks, soil and groundwater. People can be exposed to radon primarily from breathing radon in air that comes through cracks and gaps in buildings and homes. Because radon comes naturally from the earth, people are always exposed to it. If you haven’t had your home tested for Radon, be sure to do it as soon as possible. If you find that you have high radon levels, there are ways to remedy this problem. Even if you have extremely high levels they can be reduced to acceptable levels. A radon test is an add-on service and is not included in a general home inspection.