Russian nuclear plant released radioactive material across Europe in 2017?
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A Russian nuclear reprocessing plant is believed to be the source of a mysterious radioactive ruthenium-106 cloud spread across Europe in 2017. At its highest level, the cloud's radiation jumped to 176 millibecquerels per cubic meter of air, 100 times higher than recorded in Europe after Fukushima meltdown. The exact source of the cloud is yet to be confirmed, although the highest radiation levels were detected in Russia.