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  1. Astronomy

    Chow Down! Milky Way gobbles its closest known neighbor

    A tiny, newly discovered galaxy being shredded by the gravity of the Milky Way is our galaxy's closest known neighbor, residing just 42,000 light-years from the Milky Way's center.

    By Ron Cowen

  2. The good side of a viral infection?

    Hepatitis A infections may protect people from allergies and asthma.

    By John Travis
  3. Tech

    Laser beam powers flying machine

    Caught in a laser's glare on its maiden launch, a lightweight drone with a solar panel demonstrated that continuous flight powered by ground-based lasers is possible.

    By Peter Weiss

  4. Chronicling a war of beetle vs. leaf

    A meshing of family trees provides a rare example of an arms race between toxic Bursera plants and the beetles that manage to eat them anyway.