[wildbranch2007]

I like these studies how do they know it isn't the result of "Yes, the Fukushima Daiichi nuclear plant released significant amounts of cesium-137 (Cs-137) into the environment following the 2011 earthquake and tsunami, contaminating soils and the Pacific Ocean for decades. While much of this radioactive isotope dispersed, particularly in the ocean, it continues to be a concern due to its long 30-year half-life and potential to cause long-term environmental and health impacts on affected populations and migratory species. " so we could be lucky and be getting modern cesium - 137.