Nuclear Activity In The Arctic?

The first detection of the isotope came during the second week of January, via an air sampling station located in Svanhovd, on Norway’s border with Russia’s Kola Peninsula. Within days, air sampling stations as far south as Spain also detected the presence of small amounts of the isotope. The fact that iodine-131 has a half-life of just eight days would point to the release occurring just days earlier, and not being a remnant of a past nuclear event. 

http://www.thedrive.com/the-war-zone/7758/has-there-been-a-nuclear-incident-in-the-arctic