A Bizarre Spike Of Radiation Was Detected In Helsinki’s Air

Chemistry





Photo credit:

Jyrki Kymäläinen/Flickr. (CC BY-ND 2.0)

An “exceptionally high amount” of radioactivity was detected over Finland's capital on March 3 and 4.

Officials from the Radiation and Nuclear Safety Authority (STUK) have said their rooftop air sampler in Helsinki detected 4,000 microbecquerels of the radioactive isotope caesium-137 per cubic meter of air. This is around 1,000 times the regular amount they detect.