So, what do you do when you find low-level traces of radiation in the atmosphere and you don’t know where it came from?
That’s exactly the problem the International Atomic Energy Agency is facing after trace amounts of iodine-131 were found hovering over Europe a few weeks ago. It was initially detected in the Czech Republic, but has since been found in other undisclosed locations throughout Europe.
According to ABC News, iodine-131 is “a type of radiation created during the operation of nuclear reactors or in the detonation of a nuclear weapon.”
Well, that’s comforting.
The IAEA does not, however, believe the radiation is harmful, and it’s unlikely to have been caused by the Fukushima Daiichi plant meltdown that occurred in Japan earlier this year.
As of today, the origin of the radiation is still unknown.