The amount of radioactive caesium that has leaked from the ~~~ushima Dai-ichi nuclear power plant is roughly 168 times that released by the atomic bomb the US dropped on Hiroshima in 1945, according to Japan's nuclear agency.
The Nuclear and Industrial Safety Agency said the privately owned and operated plant has released 15,000 tera-becquerels of caesium-137, which lingers for decades and could cause cancer.
That compares with 89 tera-becquerels released by the US "Little Boy" uranium bomb.
The Nuclear and Industrial Safety Agency said the privately owned and operated plant has released 15,000 tera-becquerels of caesium-137, which lingers for decades and could cause cancer.
That compares with 89 tera-becquerels released by the US "Little Boy" uranium bomb.

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