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  1. Physics

    A precise proton measurement helps put a core theory of physics to the test

    After years of confusion, a new study confirms the proton is tinier than once thought. That enables a test of the standard model of particle physics.

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  2. Paleontology

    Fossilized vomit reveals 290-million-year-old predator’s diet

    The regurgitated material from before the time of dinosaurs provides a rare window into the feeding habits of a prehistoric hunter.

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  3. Health & Medicine

    Antibiotics can treat appendicitis for many patients, no surgery needed

    After 10 years, just over half the people in a trial of antibiotics for appendicitis have not needed an appendectomy.