Toshiba Corp. President Satoshi Tsunakawa bows during a press conference at the company's headquarters in Tokyo on Wednesday. Toshiba says its American nuclear unit Westinghouse Electric has filed for bankruptcy protection.
Employees work on the construction of an "ice wall" last month at the Fukushima Dai-ichi nuclear plant. March 11 marked the fifth anniversary of the magnitude-9.0 earthquake and tsunami that caused meltdowns at Fukushima.
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A Tokyo Electric Power Co. staffer measures the radiation level as others work on the construction of an ice wall at the Fukushima Dai-ichi plant on July 9, 2014.
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An Indian Coast Guard plane flies over hundreds of anti-nuclear activists during a protest last year. The Kundankulam Nuclear Power, still under construction, can be seen in the distance.
This is a DigitalGlobe image of the 5-megawatt (electric) reactor at North Korea's Yongbyon facility, Aug. 31, with steam seen coming from the electrical power generation building.
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As they inspected an underground storage pool near the crippled Fukushima Daiichi nuclear power plant earlier this month, Tokyo Electric Power Co. President Naomi Hirose (4th from left) and other officials wore protective suits and masks. Radioactive water stored in some of the pits has leaked.
Tokyo Electric Power Co./Reuters /Landov