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Friday, December 1, 2006 12:00 AM

Who poisoned the KGB agent?

Only a state with a highly sophisticated nuclear program could kill a person with a radioactive toxin.
By Alex Koppelman

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  • Thursday, November 30, 2006 07:28 PM

    Not an isotope

    I just wanted to note that there's an inaccuracy on the first page. Polonium-210 is not "an isotope of uranium" it's an isotope of polonium, and they're two separate elements. Polonium may be produced in nuclear reactions that begin with uranium, but that doesn't make it an isotope of uranium.

    —BrendanM

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