FILE - In this Feb. 19, 2012 file photo, Japanese evacuees from the towns inside the nuclear exclusion zone bow as Shinto priests hold a memorial ceremony in the abandoned and irradiate

 

              FILE - In this Feb. 19, 2012 file photo, Japanese evacuees from the towns inside the nuclear exclusion zone bow as Shinto priests hold a memorial ceremony in the abandoned and irradiate
FILE - In this Feb. 19, 2012 file photo, Japanese evacuees from the towns inside the nuclear exclusion zone bow as Shinto priests hold a memorial ceremony in the abandoned and irradiated town of Namie in Japan's Fukushima prefecture when a group of former residents returned to the area for the day to hold the ceremony at the site of the ancient Kusano shrine that was destroyed by the March 11, 2011 tsunami. Experts and the government say there have been no visible health effects from the radioactive contamination from Fukushima Dai-ichi so far. But they also warn that even low-dose radiation carries some risk of cancer and other diseases, and exposure should be avoided as much as possible, especially the intake of contaminated food and water. Such risks are several times higher for children and even higher for fetuses, and may not appear for years. Okinawa has welcomed the people from Fukushima and other northeastern prefectures (states) affected by the March 11, 2011, earthquake and tsunami that set off the nuclear disaster. (AP Photo/David Guttenfelder, File)