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  1. Earth

    A sinking, melting ancient tectonic plate may fuel Yellowstone’s supervolcano

    The subduction of an ancient tectonic plate may be the driving force behind Yellowstone’s volcanic eruptions.

    By Carolyn Gramling
  2. Science & Society

    Watch our most-viewed videos of 2017

    Cassini’s demise, cuttlefish and the Curiosity rover topped our list of most popular videos of 2017.

    By Helen Thompson
  3. Genetics

    50 years ago, synthetic DNA made its debut

    Synthetic DNA has come a long way since it arrived on the scene half a century ago.

    By Cassie Martin
  4. Animals

    2017 delivered amazing biology finds from organisms large and small

    From giant African elephants to tiny tardigrades, scientists discovered some surprising biology this year.