Environmental organisation says ‘dangerous’ levels of carbon-14 exist in water that could soon be released into Pacific ocean

Contaminated water that will reportedly be released into the sea from the wrecked Fukushima Daiichi nuclear power plant contains a radioactive substance that has the potential to damage human DNA, a Greenpeace investigation has said.

The environmental group claims the 1.23m tonnes of water stored in more than 1,000 tanks at the plant contains “dangerous” levels of the radioactive isotope carbon-14, in addition to quantities of tritium that have already been widely reported.

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