The 67 tests conducted in the northern Marshalls between 1946 and 1958 released radioactive iodine said to be 150 times worse than the contamination from the nuclear disaster at Chernobyl in 1986.

1946年到1958年，在马绍尔群岛北部进行了67次核试验，释放出的放射性碘造成的污染据说比1986年切尔诺贝利核灾难带来的污染严重150倍。

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Meanwhile, the company that operates the stricken nuclear plant says radioactive contamination in ground water beneath one reactor has been measured at 10, 000 times standard norms.

与此同时，经营受损核电站的公司表示，一座反应堆下的地下水中放射性污染的水平是正常水平的10,000倍。

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Meanwhile, the company that operates the stricken nuclear plant says radioactive contamination in ground water beneath one reactor has been measured at 10,000 times standard norms.

同时，运营受损的核电站的电力公司表示，其中一座反应堆下的地下水中放射性污染的水平是正常标准的10,000倍。

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Why do you think nuclear contamination was not listed as a threat to America's rivers?

CNN: Rivers feel heat as U.S. energy demand rises

Two years ago, on March 14, 2011, the National Nuclear Security Administration sent flight crews to Japan to monitor airborne and ground contamination from the still developing nuclear crisis at the Fukushima-Daiichi nuclear plant.

FORBES: Drones To Be Deployed As Nuclear Fallout Detectors

Since the March 11 earthquake that ravaged northern Japan, workers at Fukushima Daiichi have been struggling to cool down three overheated reactors and keep pools of spent but still potent nuclear fuel from spreading further radioactive contamination across northern Japan.

CNN: STORY HIGHLIGHTS