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The Secrets of Acid Salt Lakes

These stunning bodies of water—saltier than seawater and nearly as acidic as lemon juice—can teach us more about where life can survive, on Earth and beyond.

El Niño then and now

El Niño is part of a natural climate pattern that occurs roughly every two to seven years, bringing warmer-than-normal water to parts of the equatorial Pacific. The most recent very strong El Niño events, in 1997–98 and 2015–16, upended weather patterns.

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