A mysterious radiation cloud spread over Europe in September. Russia finally acknowledged it.
After weeks of denying its existence, the Russian government this week acknowledged the strange surge of radiation that billowed over Europe in September. The French nuclear safety regulator IRSN first detected the radioactive element ruthenium 106 in the air in late September, tracing its origins to the Ural Mountains in the border region between Russia and Kazakhstan. Other European cities like Stockholm, Milan, and Budapest also began picking up radiation traces.