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The Time Capsule in the Salt Flat
High in the Chilean Andes, at an altitude where the air is thin and the Sun is intense, a salt flat is hiding something remarkable. Locked inside ancient crystals of gypsum are the preserved remains of microscopic life, fossils of organisms that lived thousands of years ago, sitting alongside communities of microbes that are alive right now. Scientists studying this extraordinary place think it could be the closest thing on Earth to where life might once have existed on Mars.
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