• DOE Office of Environmental Management
  This site offers much information on, and many links to, topics related to nuclear radiation and the environment
• Sources of Radiation
  A graph showing the sources of background radiation for the U.S. population and their relative contributions to a person's annual background radiation dose
• Radiation and Health Physics
  Health physics topics for the general public and the health physics community, maintained by the University of Michigan Student Chapter of the Health Physics Society
• Radiation Protection and the Human Radiation Experiments
  A two year study by the Human Studies Project Team at Los Alamos National Laboratory, addressing questions concerning the ethics and conduct of human radiation experiments that were carried out by the Los Alamos researchers from the Manhattan Project days through the 1960s

Government Agencies

• Department of Energy
• DOE Nevada Operations Office
• DOE Albuquerque Operations Office
• Environmental Protection Agency
• Nuclear Regulatory Commission

National Laboratories

• Idaho National Engineering Laboratory (INEL)
• Lawrence Livermore National Laboratory
• Los Alamos National Laboratory
• Oak Ridge National Laboratory
• Pacific Northwest National Laboratory
• Sandia National Laboratories
• Savannah River Site (Westinghouse)

Societies

• American Nuclear Society
• Desert Research Institute (DRI)
• Health Physics Society
• International Radiation Protection Association

Environmental Organizations

• Concerned Citizens for Nuclear Safety
• Sierra Club
• Natural Resources Defense Council

Energy Organizations

• Electric Power Research Institute (EPRI)
• Nuclear Energy Institute (NEI)