Tritium not the only radioactive material in Fukushima cooling water
Japan's government is grappling with how to dispose of tainted water left over from cooling the meltdown-hit reactors at the Fukushima Daiichi plant.
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Japan's government is grappling with how to dispose of tainted water left over from cooling the meltdown-hit reactors at the Fukushima Daiichi plant.
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