Spent fuel pool
Last year's earthquake and tsunami in Japan knocked out power to cool the three reactors at the Fukushima Daiichi plant and its spent fuel pools like these at a U.S. plant. One of the first Nuclear Regulatory Commission recommendations issued in response to the Fukushima disaster was better monitoring of spent fuel pools.
March 10, 2012 4:00 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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