Elsp, Elsp, that is overly geocentric thinking, and not appropriate to the lunar sphere. On Earth we must worry about our natural life-support system: our biosphere. Show me a lunar biosphere. If you can't, quit thinking like a Terran flatlander, eh?
One thing you cannot do is pollute a vacuum. Manufacture in space doesn't pollute the air or the water, and it offers, free for the taking, a continuous flow of energy and all the hard vacuum you'll ever want.
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Wanna stop school shootings? End Gun-Free Zones, of course.
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