Environment

Out of Thin Air

A new device that can harvest water out of air with humidity as low as 20 percent, using only sunlight for energy, could revolutionize life in remote, arid regions.

The new invention uses an extremely porous material called a metal-organic framework that absorbs 20 percent of its weight in water from even low-humidity air.

Sunlight heats the substance, releasing water vapor that condenses into ample water per day for household use. Developers say the invention could be upscaled to also irrigate fields or greenhouses in areas otherwise too arid to grow crops.

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