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For more than 100 years astronomers have seen them; dark patches swirling in the clouds of Venus, visible only in ultraviolet light. Could there be life-forms thriving in the balmy zone ~50km above the hellish surface? On Earth, researchers find life everywhere they look, including acid-loving bacteria that could easily live in Venus’ air. Experts share what they know – and how they’re going about finding out – about this fascinating possibility.
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