Japan continues to struggle with the Fukushima Daiichi nuclear plant five months after the second worst nuclear accident in history. Three reactors have experienced full core melts, and spent fuel fires have also added to the fallout burden. The plant is yet to be brought under control and continues to discharge radioactivity into the environment, albeit at a lessening rate. The International Atomic Energy Agency (IAEA) continues to rate the situation as 'very serious'.