RussiaToday on Apr 30, 2011 - A senior nuclear advisor to the Japanese Prime Minister is resigning, alleging the government ignored his safety advice. Toshiso Kosako says the wrong radiation limits were set for schools near the crippled Fukushima nuclear plant, endangering the lives of children. The Japanese government denies the claims, insisting it followed expert advice. The plant has been releasing radioactivity since being hit by a earthquake and tsunami in March.