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Old 08-12-2019, 08:03 PM
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ceptimus ceptimus is offline
Join Date: Aug 2004
Location: UK
Default Re: Maps are fun, so is food.

I don't understand the first one - or if I do then it must be wrong.

According to Wikipedia there's only 30 grams of Francium (Fr) in the whole Earth's crust at any given time: it's radioactive and decays away quickly and is only slowly produced by the radioactive decay of other elements.

Astatine (At) is even rarer.
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JoeP (08-12-2019), SR71 (04-03-2020)
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