
An interesting (and possibly controversial) source of information on Radiation, Science and Health from the Worcester Polytechnic Institute
http://cnts.wpi.edu/RSH/index.html
The Canadian Nuclear Safety Commission regulates the nuclear industry in Canada. The regulatory system is designed to protect people and the environment from licensed sources of man-made radiation resulting from the use of nuclear energy and materials.
http://www.nuclearsafety.gc.ca/eng/safety
The Canadian Radiation Protection Association provides information to radiation safety professionals, teachers, scientists and the general public. Included on this website are a number of other informative links. http://www.crpa-acrp.ca/en