Japanese Buddhist monk Tanaka Tokuun, who was evacuated from Fukushima prefecture, looks over an instrument measuring radiation levels at a hotel on March 17. Buddhika Weerasinghe/Getty Images hide caption

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A boy evacuated from Koriyama, some 37 miles from the Fukushima Dai-ichi plant, gets scanned with a Geiger counter Wednesday. Ken Shimizu/AFP/Getty Images hide caption

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The No. 2 reactor at the Fukushima Daiichi nuclear power plant, as seen in screen grab. What will happen to the workers left behind to battle radiation leakage? AFP/Getty Images hide caption

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Children in Kawamata, Japan, take potassium iodide on Monday to protect against thyroid cancer after being evacuated from the vicinity of the Fukushima Daiichi Nuclear Power Plant. Asahi Shimbun via Getty Images hide caption

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