The tuna is safe to eat by US standards but it has levels of radioactivity that are ten times higher than it was normal in the past, indicating clearly that the byproduct of the Fukushima catastrophe is arriving, even if somewhat diluted, to US coasts.
Tuna are almost top tier predators hence the contamination tends to accumulate in them... and in us humans as well.
Source: EneNews, 10news.
Update: the exact measure of radiation (by Stanford University researchers) was:
A Becquerel (Bq) equals one disintegration (count) per second (CPS) or 60 CPMs.
Source: Ex-SKF (citing Kyodo News).
Update: the exact measure of radiation (by Stanford University researchers) was:
Cesium-134: 4 Bq/kg
Cesium-137: 6.3 Bq/kg
A Becquerel (Bq) equals one disintegration (count) per second (CPS) or 60 CPMs.
Source: Ex-SKF (citing Kyodo News).
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