Quote Originally Posted by doc_bean
Maybe rich uranium could be worth the effort, but we have enough of that here on earth for a few hundred years, and I doubt the populace would be in favour of making our planet just a little more radioactive.
Actually...

I recall reading something somewhere (not sure what, but it was a credible source) that said at the rate our power plants and constant renewal of bomb uranium are consuming the stuff, we only have 70 years of it left.