ภาพโรงไฟฟ้านิวเคลียร์ฟุกุชิม่าหลังเหตุการณ์สึนามิถล่มผ่านมาแล้ว 2 ปี

An aerial view shows workers wearing protective suits and masks working atop contaminated water storage tanks at the Fukushima Daiichi nuclear power plant in this photo taken by Kyodo, August 20, 2013.

An aerial view shows the tsunami-crippled Fukushima Daiichi nuclear power plant and its contaminated water storage tanks in this photo taken by Kyodo, August 20, 2013.

Inspectors at the construction site of the shore barrier, which is meant to stop radioactive water from leaking into the sea, near the Fukushima Daiichi nuclear power plant, August 6, 2013. (Kyodo)

An aerial view shows the No. 3 reactor building at the Fukushima Daiichi nuclear power plant, July 18, 2013. (Kyodo)

A worker takes radiation readings on the window of a bus at the screening point of the Fukushima Daiichi nuclear power plant, June 12, 2013.

Former resident Susumu Ikeda walks past an overgrown garden in the abandoned town of Namie, just outside the exclusion zone around the Fukushima plant, Nov. 20, 2011. 

The Unit 4 reactor building of the crippled Fukushima nuclear power station is seen through a bus window in Okuma, Nov. 12, 2011.

Men sort and clean protective masks at J-Village, a soccer training complex serving as an operation base for those battling Japan's nuclear disaster, Nov. 11, 2011.

數千香港市民雲集政府總部聲援被困公民廣場學生（美國之音圖片／海彥拍攝）

Japanese police officers wearing suits to protect them from radiation carry a victim as another group carries another body while searching for missing people in Minami Soma, Fukushima Prefecture, April 8, 2011. 

Japan's Emperor Akihito, second from left, and Empress Michiko, left, talk with an evacuee at an evacuation center in Kazo, Saitama Prefecture, April 8, 2011.

In this image released by Tokyo Electric Power Company, smoke billows from the No. 3 unit at Fukushima Dai-ichi, northeastern Japan, on March 15, 2011.