How much plutonium?????

["Cathy Lee" <cathy_lee86@hotmail.com>]

Dear Scientists,

please forgive this intrusion of I,
a layperson, into your arena.

I recently read that half a kilo of plutonium
could induce lung cancer in everyone on the planet.

I was wondering if any of you could tell me about the
scientific merits of this claim.

Also, has anyone actually calculated the number of radio
active decays in the body, say, per second. I would
be interested to
know!
\

Thank you,

Cathy
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