AARST  
   American Association of Radon Scientists and technologists. AARST is a voluntary professional association which serves those individuals engaged in the research, testing, measurement, and remediation of radon.
   http://www.aarst.org

Risk Assessment of Radon in Drinking Water  
   The National Academy of Sciences report (1999) compares the risks of radon in air and water. Full report can be read online, or purchased.
   http://www.nap.edu/catalog/6287.html

Natural Radioactivity  
   The Radiation Information Network (Idaho State U). Primordial, cosmogenic and man-made radiation sources. Radon accounts for 56% of the total effective dose to people in the US. Radioactivity in soil, building materials, and human bodies.
   http://www.physics.isu.edu/radinf/natural.htm

Health Effects of Exposure to Indoor Radon (BEIR VI Report)  
   The National Academy of Sciences comprehensive report (1998) on the health efects of radon in homes. A detailed risk model for the US population. Explains how radon causes lung cancer and estimates that in the U.S. it causes 15,400 - 21,800 lung cancer d
   http://www.epa.gov/iaq/radon/beirvi1.html

EPA Publications on Indoor Radon  
   Complete publications list, descriptions and links. Informative EPA Guides for citizens, consumers, home buyers and sellers, physicians, and tenants. Radon prevention in construction, schools. Measurement protocols. Links to regional Radon Offices.
   http://www.epa.gov/iaq/radon/pubs/

Radon - The Invisible Intruder  
   Report from the Office of New York State Attorney General (1996) on the dangers of radon, testing, tips on reducing radon and selecting a contractor.
   http://www.oag.state.ny.us/environment/radon96.html

UIC - Radiation and Life  
   Illustrated primer on radiation all around us. Origins and types of radiation. Ionising, cosmic, background and man-made radiation. Radon contributes 48% of the radiation dose to people in Australia. Uranium Information Center, 1998.
   http://www.uic.com.au/ral.htm

Radon Project of Columbia University and Lawrence Berkeley National Lab.  
   Uses information about location of home, and house construction, to suggest whether or not to test for radon.
   http://www.stat.columbia.edu/radon

Uranium - The Deadliest Metal  
   A detailed paper on uranium, its radioactive products, mining, and radiation risks to people issued by the Canadian Coalition for Nuclear Responsibility (1992). The health risks even at the low radon levels in homes.
   http://www.ccnr.org/uranium_deadliest.html

Integrated Environmental Management  
   Informative primer on radon, its progeny, measurement and risks. Extensive information on radioactivity and radiation, exposure and risks.
   http://www.iem-inc.com/prrn.html

Residential Radon and Lung Cancer Study  
   The latest and most substantial study ever on the link between radon and lung cancer (May, 2000) proves that residential radon causes cancer even at the low levels in homes. At the EPA's 4 pCi/L action limit, the lung cancer risk to women increases by 50%
   http://www.cheec.uiowa.edu/misc/radon.html

USGS Radon Information  
   U.S. Geological Survey site on radon in earth, air and water. Site resources include educational information on radon, and multiple maps on the geologic and geographic occurrence of radon in the United States.
   http://energy.cr.usgs.gov/radon/radonhome.html

How Stuff Works: Radon  
   Informative article about how radon forms and why it is so dangerous. Comparison of radon test devices. Useful links.
   http://www.howstuffworks.com/radon.htm

Radon Progeny  
   A chart listing all of the decay products of radon gas in their order of appearance. Atomic mass, atomic numbers and the energy in MeV of the released alpha radiation.
   http://www.ccnr.org/radon_chart.html

Uranium 238 Decay Chain  
   Short primer on U238 decay through radon to stable lead, radioactive half times of elements. Chart of the decay chain with half times and alpha or beta radiation.
   http://www.atral.com/U2381.html

Western Regional Radon Training Center  
   Provides certification and continuing education classes that meet National Radon Proficiency Program. Located in Colorado Springs, CO.
   http://www.wrrtc.com

Virtual Hospital: Radon Occurrence and Health Risk  
   Comprehensive article on radon. Radon progeny, the decay chain and radiation. Lung cancer risks. Occupational and residential limits. Geographic radon potential. Waterborne radon. (June 1999)
   http://www.vh.org/adult/provider/preventivemedicine/Radon/HealthRisk.html