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  1. Physics

    High-speed video reveals physics tricks for shooting a rubber band

    To fire a rubber band flawlessly, use a wide band and don’t pull too hard, physicists suggest.

    By Emily Conover
  2. Environment

    Satellites make mapping hot spots of ammonia pollution easier

    There’s a more accurate way to estimate ammonia emissions.

    By Laurel Hamers
  3. Health & Medicine

    DNA tests of Lassa virus mid-outbreak helped Nigeria target its response

    New technology for analyzing genetic data quickly in the field guided how Nigeria dealt with an outbreak of Lassa fever in 2018.

    By Laurel Hamers
  4. Physics

    The physics of fluids explains how crowds of marathon runners move

    A new liquid-inspired theory can predict the movements of marathoners lining up for a race.