AmiMoJo writes "New research has found that radioactive material in parts of north-eastern Japan exceeds levels considered safe for farming. The findings provide the first comprehensive estimates of contamination across Japan following the nuclear accident in 2011. An international team of researchers took measurements of the radioactive element caesium-137 in soil and grass from all but one of Japan's 47 regions. The researchers estimate that caesium-137 levels close to the nuclear plant were eight times the safety limit, while neighbouring regions were just under this limit."
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