Abu Dhabi-based startup Manhat, founded in 2019, is developing a floating device that distills water without requiring electricity or creating brine. It consists of a greenhouse structure that floats on the surface of the ocean: sunlight heats and evaporates water underneath the structure – separating it from the salt crystals which, are left behind in the sea – and as temperatures cool, the water condenses into freshwater and is collected inside.

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