How a 2017 radioactive plume may be tied to Russia and nixed neutrino research

A new study offers more evidence that a nuclear facility called Mayak was responsible for the cloud

RADIOACTIVE RELEASE  Scientists have suggested a possible source for a cloud of radioactive material that swept over European countries in 2017: the Russian nuclear plant Mayak (a sign from the facility shown).

Kiselev Alexey/Shutterstock

It was a nuclear whodunit: A cloud of radioactive material was hanging over Europe, but no one knew where it was coming from.