» Centre for Ecology and Hydrology Radioecology    Cthe CEH at Merlewood in the UK study the movement and distribution of man-made radionuclides in the environment. Provides description of projects and laboratory services.    http://merlewood.ceh.ac.uk/Sections/radio/labs.htm

» Fission Reactors on the Earth    Discusses the natural nuclear fission reactions that occurred 1.7 billion years ago in uranium deposits at Oklo, Gabon.    http://www.npp.hu/tortenelem/foldreaktor-e.htm

» International Union of Radioecology    Professional association of radioecologists and scientists in related fields. Information about the organization, upcoming meetings, online issues papers and other publications, and links to other websites related to environmental radiation protection.    http://www.iur-uir.org

» Journal of Environmental Radioactivity    Publication of original research or review papers on any aspect of the occurrence of radioactivity in natural systems. Science Direct Elsevier Science on line journal.    http://www.sciencedirect.com/science?_ob=JournalURL&_cdi=5914&_version=1&_urlVersion=0&_userid=0&md5=55a45f26d8ab0c3c4e77e743a2ee619b

» Laboratory for Radioecology, Nakaminato, Japan    Studies environmental behavior of radionuclides and effects of radioactivity on marine organisms.    http://www.nirs.go.jp/ENG/nakami.htm

» Radiation Physics and Radiocarbon Research Lab    Measurement of man-made and natural radionuclides in the environment. Radiochemical lab including radiocarbon dating service from the University College Dublin.    http://www.ucd.ie/radphys/

» Radnet    Information about past releases and dispersion of radionuclides in the biosphere.    http://www.davistownmuseum.org/cbm/

» Swedish University of Agricultural Sciences Radioecology    Provides information on research and studies.    http://www.mv.slu.se/ma/radio/radio-e.htm