U.S. Nuclear Agency Hid Concerns, Hailed Safety Record as Fukushima Melted

NBC News: In the tense days after a powerful earthquake and tsunami crippled the Fukushima Daiichi power plant in Japan on March 11, 2011, staff at the U.S. Nuclear Regulatory Commission made a concerted effort to play down the risk of earthquakes and tsunamis to America’s aging nuclear plants, according to thousands of internal emails reviewed by NBC News.

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