Then there is the pressurization method, which a fan blows air from your upstairs or outside into your basement. This idea is to produce enough air pressure in your basement so that the radon will not seep in. The only downfall is that the construction of your home may limit the effectiveness. Also letting the outside air in can lead to moisture problems and increase heating and cooling costs.
You can also seal and ventilate your home from radon gas. If you have cracks in your foundation, you want to tackle those by sealing them up. Also you will want to ventilate your basement with a fan, drawing the radon through a duct and out your home where it's released.