Radiation found 640 km off coast of Fukushima
Radioactivity from the Fukushima No. 1 nuclear plant disaster has been detected as far away as 643 km offshore in the Pacific Ocean.
Scientists say ocean water showed readings of up to 1,000 times prior levels of cesium-137 from the stricken Fukushima plant. But they say the new readings are far below the levels that are generally considered harmful, either to marine animals or people who eat seafood.
The results are from water samples taken in June, about three months after the disaster caused by a powerful earthquake and the tsunami that followed.
The findings were reported Tuesday at a scientific meeting in the United States.
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