He later died from polonium poisoning. This element might be the most lethal one in the world. Produced by Kevin Reilly. Original reporting by Kevin Loria. Follow TI: On Facebook More from Tech In ...

When Marie and Pierre Curie discovered the natural radioactive elements polonium and radium, they did something truly remarkable– they uncovered an entirely new property of matter. The Curies ...

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She suspected the presence of an even more powerful element. MARIE-NOELLE HIMBERT: Here, Po, Polonium is the first element that they discovered. CHRIS PACKHAM: It’s remarkable, isn’t it?