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  1. Humans

    Science News Challenge

    Try the Science News current-events crossword puzzle.

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  2. Humans

    Science News Challenge

    Try the Science News current-events crossword puzzle.

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  3. Tech

    Gel Bots? Vibrated goo mimics slithery motions

    The ability of soft, jellylike hydrogels to move as do snails, snakes, and inchworms may point the way to a new class of squishy robots that promise to be simple, quiet, and versatile.

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  4. Tech

    Gel Bots? Vibrated goo mimics slithery motions

    The ability of soft, jellylike hydrogels to move as do snails, snakes, and inchworms may point the way to a new class of squishy robots that promise to be simple, quiet, and versatile.