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.

The National Academy of Sciences report (1999) compares the risks of radon in air and water. Full report can be read online, or purchased.

Ground-level Ozone the biggest part of urban smog, leads to asthma and essentially sunburns your lungs. Ozone NY is dedicated to educating individuals and businesses on Ground-level Ozone and the actions they can take to improve the air we breathe.

Providing independent certification, approval and accreditation for radon testers, mitigators, measurement devices, calibration

As the world's largest producer of radon test devices, we offer homeowner DIY test kits for $6.95 each. Quantity discounts available.

Professional radon certification training and education, radon instrument calibration, nuclear science and radon consulting services.

Nationwide list of certified radon measurement or mitigation professionals. Administers the national certification program.

Makers of radiation and radon detectors. Detection systems for radiation, Radon, Thoron, Tritium, Gamma, Alpha and more. Manufacturers of the E-Perm electric ion chamber systems and gas detectors and detection systems.

A scientific, third party board to establish environmental standards for indoor products and building materials. Aims to improve public health and quality of life by encouraging and helping manufacturers to build better, safer products and to uphold environmental practices in product development, manufacturing, and distribution.

Information and analysis on indoor air quality in India and other developing countries including indoor air quality in commercial buildings, biomass cooking fuels, and in-vehicle exposure.