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Well, the planet is running out of water....good, clean water for drinking and such. But only because we waste so much of the stuff and what we do with the rest is pollute it. It's not that the actual amount of freshwater on the planet has changed, it's how it's being utilised that is the problem. It's what our usage of the freshwater does to the supplies and what we happen to add to it that makes the difference.
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