South Korean protesters hold pictures of North Korean leader Kim Jong Un during a rally last week in Seoul. Recent satellite imagery indicates the possibility that Pyongyang is readying for a new nuclear test.
A worker walks inside the turbine hall of the Sizewell nuclear plant in eastern England in 2006. The U.K. government on Monday announced that French-owned EDF would build the first new British nuclear power station in 20 years.
North Korean leader Kim Jong Un (right) claps during a ceremony unveiling statues honoring his grandfather and father, Kim Il Sung and Kim Jong Il, respectively, in Pyongyang last April.
Ed Jones/AFP/Getty Images
The Fukushima Power Plant in Japan had three safety measures in place to make sure the fuel rods inside the nuclear reactor do not overheat. For various reasons attributed to the earthquake that triggered a tsunami, the measures failed.