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  1. Health & Medicine

    Appetite-suppressing drug burns fat, too

    An experimental drug seems to assail obesity through dual biological actions.

    By Ben Harder
  2. Physics

    Double or Nothing

    The hunt for a rare, hypothetical nuclear transformation known as neutrinoless double-beta decay may answer one of the most urgent questions in physics today: How much do elementary particles called neutrinos weigh?

    By Peter Weiss

  3. Aphids with Attitude

    A few aphid species that live socially in groups raise their own armies of teenage female clones.

    By Susan Milius

  4. From the July 2, 1932, issue

    OUR FRIEND THE BAT With the coming of warm summer weather, and the arrival in number of insects to eat, bats are becoming more noticeable as they make their noiseless nightly patrols.