Wind turbines, solar panels, and biofuels—these are, to be sure, three of biggest hitters of the clean-tech movement. But for every offshore wind farm or ethanol breakthrough that grabs the headlines, a number of peculiar (to say the least), planet-saving innovations have fallen through the cracks. Until now, that is. Behold five of the weirdest clean-tech innovations we could find. Hint: One of them actually pulls drinking water right out of thin air.
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