Japan Atomic Industrial Forum (national nuclear industry forum)
Tokyo Electric Power Company (operator of the Fukushima nuclear power plant)
Location of nuclear power plants in Japan
Basic design information for boiling water reactors (BWRs)
Information on levels of radioactivity (from the Ministry of Education, Culture, Sports, Science and Technology of Japan)
International Atomic Energy Agency
Full list of events and updates
Radiation fact sheet
World Health Organisation
FAQs: Japan nuclear concerns
Additional sources of information
Autorité de Sûreté Nucléaire (ASN)
US Nuclear Regulatory Commission (NRC)
The New York Times: How a Reactor Shuts Down and What Happens in a Meltdown