![]()  | 
| 
 Two-year-old Nao Watanabe plays in a ball pit at an indoor playground which was built for children and parents who refrain from playing outside because of concerns about nuclear radiation in Koriyama, west of the tsunami-crippled Fukushima Daiichi nuclear power plant, Fukushima prefecture February 27, 2014. [Photo/Agencies]  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  |