At the time there was worldwide admiration for the bravery of the "Fukushima 50" - the selfless workers who agreed to stay behind to work in the most dangerous parts of the complex.

BBC: How Tepco glossed over Fukushima's vulnerability

The number of workers grappling with an increasingly likely nuclear meltdown at the Fukushima Daiichi nuclear plant in Japan has been cut from 800 to 50.

FORBES: Fukushima's Last Stand: All But 50 Workers Evacuated

The reactor at Fukushima wasn't designed to withstand a 9.0 earthquake or a 50-foot tsunami.

WSJ: The Panic Over Fukushima

All 50 of Japan's nuclear plants were shut after the meltdown at Fukushima, which was triggered by a tsunami and earthquake in March 2011.

BBC: Japan marks Hiroshima bombing amid anti-nuclear calls

Japanese officials have said the plutonium would strictly be used for power generation, even as just two of Japan's 50 power reactors are running because of the safety concerns raised by the 2011 Fukushima nuclear accident.

WSJ: U.S. Opposes Japan's Nuclear Plan