Giant tent being built over Fukushima plant's No. 1 reactor By Eric Talmadge National Aug. 12, 2011 - 04:00PM JST ( 29 ) TOKYO — The operator of Japan’s damaged Fukushima Daiichi nuclear power plant is building a huge tent to cover one of the worst-hit reactors, officials said Friday. Officials hope the cover will keep radioactive materials that have already leaked from spreading, prevent rainwater seepage and offer a barrier from possible leaks or blasts in the future. The tent is being erected to provide a temporary replacement for the No. 1 reactor’s outer housing shell, which was destroyed...