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  1. Planetary Science

    New Horizons visited Pluto 10 years ago. We’re still learning from it

    Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

    By McKenzie Prillaman
  2. Animals

    Greenland sled dog DNA is a window into the Arctic’s archaeological past

    A genomic analysis of Greenland’s Qimmeq dogs suggest they and their human partners arrived on the island centuries earlier than previously thought.

    By Jake Buehler
  3. Climate

    Trees can’t get up and walk away, but forests can

    In fantasy worlds, trees like the Lord of the Rings’ Ents are agile and mobile. In the real world, they’re slow.