Scientists looked to the things in nature that collect clean water from air: the cactus, beetle, and desert grasses, to learn how they could build a similar, albeit larger, system, for humans. Using 3D printers, they built surfaces with bumps and barbs, to see which system gathered the most water.

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Scientists looked to the things in nature that collect clean water from air: the cactus, beetle, and desert grasses, to learn how they could build a similar, albeit larger, system, for humans. Using 3D printers, they built surfaces with bumps and barbs, to see which system gathered the most water.