Study claims evaporation could provide 70 per cent of US energy

Two years ago, the team behind the latest report published research detailing how evaporation could harness energy. Its ‘evaporation engine’ draws power from the expansion and contraction of bacterial spores in the presence of humidity. The spores are placed on plastic strips, and collectively these strips act like muscles, opening and closing a shutter to control humidity while also providing a continuous source of power.

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Source: The Engineer

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