- International Union of Radioecology
- Website of a professional association of radioecologists and scientists in related fields. Presents information about the organization, schedules of upcoming meetings, and publications.
- Radiation Physics and Radiocarbon Laboratories
- Specializing in the measurement of minute traces of artificial and natural radionuclides in the environment.
- RADNET
- Documents the radioactive contamination of the biosphere brought about by human activities, with special reference to weapons production and commercial nuclear generation of electricity.
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