Friday, March 18, 2011 As the nuclear crisis in Japan’s crippled Fukushima I Nuclear Power Plant appears to worsen, Japan’s nuclear safety agency raised their assessment of its severity from 4 to 5 on the 7-level International Nuclear Event Scale, the same rating given the 1979 Three Mile Island crisis. Japan’s Prime Minister, Naoto Kan, said bluntly that the situation at the nuclear power plant was “very grave”. Weather forecasts indicate changing winds may begin moving radiation closer to Tokyo by March 30. Efforts thus far to cool nuclear fuel in the reactors and the spent-fuel pools has produced little if any success, contends United States government officials. Engineers are…