shannon: with the threat of multiple meltdowns looming in japan, theories context. japanese has a total of 55 reactorrers in 17 complexes nationwide that provide 20% of the country s electricity. japan has declared a state of emergency at another plant. radio activity at the own go portland is being investigatedded. with no power, authorities have resorted to injecting sea water into it to cool it down. just as they had to do yesterday to unit 1. a completely meltdown would occur if the power plant lost all ability to keep temperatures under control and release uranium and contaminants and pose widespread health risks. we re keeping an eye on it.