The Norwegian Radiation and Nuclear Safety Authority (DSA) has recorded an increase in radiation levels at the border with Russia. Traces of cesium-137 have been detected, The Barents Observer informs. According to DSA, traces of cesium-137 were detected at two radiation monitoring stations—Viksjøfjell and Svanhovd. This radioactive isotope forms as a result of the decay of uranium-235, which is used in nuclear reactor fuel and nuclear weapons. The agency claims that the amount of cesium detected is “very low,” but it exceeded usual levels—about 5 micro becquerels per cubic meter. It is noted …