To have a radon problem in a building requires radium nearby, a pathway for the radon gas to move through the soil or rock, a driving force, and openings in the foundation. An educational tool is used to carry out a systematic survey of the properties of radon leading to a plan to limit public exposure. Construction of a geographical probability distribution of radon exposures is suggested to locate areas of potentially h igh indoor levels. Testing and mitigation methods are discussed. A national policy is advocated that all homes be tested for radon at the time of sale.
Prevention is stressed by requiring all new construction to be radon resistant.
Emphasis is placed on treating the root environmental causes of disease rather than the diseases, themselves.