What is radon, where does it come from, why should I be concerned?
Radon is an odorless radioactive gas that results from the breakdown of uranium. Uranium is present in most of the soil and rock around the world. It is especially concentrated in areas with lots of granite, shale, phosphate and pitchblende. Exposure to radon can increase your chances of getting lung cancer. Scientists are more certain about radon risk than risks from most other cancer causing substances. Smoking combined with radon is an especially dangerous health risk.