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Polonium-210: A deadly element

By Hamish Kidd2006-12-21T08:51:00

Radiation warning sign reading "Walk in and drive in forbidden", Mayak nuclear reprocessing plant, Chelyabinsk, Russia

Source: © Kiselev Alexey / Shutterstock

Litvinenko death sparks radiochemical investigation

Litvinenko death sparks radiochemical investigation