Radon is a natural occurring gas that comes from the decay of uranium 238 and radium 226 and  then leaves the soil and enters the atmosphere. Radon can then enter the home where long term exposure can cause health concerns. Through remediation radon in homes and buildings can be greatly reduced if not completely removed. There are many systems and steps that can be taken against radon which depend on the building and circumstances. For further information go to the EPA website and learn about radon in Virginia.