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  1. As the worms churn

    Burrowing animals mix soil and sediments, shaping the environment and scientists’ understanding of it.

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  2. Earth

    World’s longest cave formation still growing

    Minerals still accumulate in New Mexico’s Snowy River.

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  3. A partnership apart

    DNA in hand, scientists dissect and redefine the iconic lichen mutualism.

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  4. Better living through plasmonics

    Mixing light with nanotechnology could help treat cancer and build faster computers.

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  5. Snapshots from 25 years of publicizing astronomy

    Astronomer and author Stephen P. Maran recently retired from 25 years as press officer for the American Astronomical Society.