Radon comes from uranium, a radioactive metal that has decayed over billions of years and turns into another solid element called radium. Radium is about a million times more radioactive than uranium, making it a very dangerous element. The radium then continues the decay process and turns into a gas, called radon over the next several hundred to a couple of thousand years. Radon seeps through the soil and enters the home through small cracks, holes, or voids in basement slabs, crawl spaces, and slabs on grade. Homes act as a vacuum, sucking these gasses from the soil and up through the main and upper living areas where they are then breathed in.Â