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Originally Posted by Big Dave
You wouldn't care to tell us what the half-life of ubiquitous U-238, would you?
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Several billion years, IIRC. Pales in comparison to tungsten-180 (yes, your incandescent light bulbs are radioactive!), with an estimated half-life around 1.0e18 years. (That's a billion times a billion.)
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We need to get government out of the way of ALL OF THEM.
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At the very least, though I wouldn't mind a nice tax deduction for installing solar heating :-)