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  1. Tech

    Website privacy policies don’t say much about how they share your data

    Privacy policies don’t reveal the half of how websites share user data.

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  2. Environment

    This plastic can be recycled over and over and over again

    A new kind of polymer is fully recyclable: It breaks down into the exact same molecules that it came from.

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  3. Archaeology

    Footprints prove humans hunted giant sloths during the Ice Age

    Footprints of humans and giant sloths show a dramatic chase sequence from more than 10,000 years ago.

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  4. Astronomy

    The latest star map from the Gaia spacecraft plots 1.7