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A little more than a month ago, NASA’s Perseverance rover made a daring landing on the Martian surface that’s now been watched (and rewatched) by millions. But now, the real work begins. Tucked deep ...

Like the settlers of old, space explorers will live off the land. But if self-sufficiency on Earth is difficult, it’s orders of magnitude more challenging in space, where there are no trees to build ...