Radioactive sampling from the Techa river near the Mayak complex, from July 2017. Greenpeace
By Jan Haverkamp and Andrey Allakhverdov
A week ago, the Russian meteorological service, Roshydromet, reacted to a month-long standing request for information from Greenpeace. It triggered extraordinary interest among journalists world-wide in a rather unknown bit of nuclear physics: the radioactive substance ruthenium-106.