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  1. 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

  2. Aphids with Attitude

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

    By Susan Milius

  3. 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. Because of their nocturnal, and therefore mysterious, habits and because of their preference for homes in caves and dark holes, our ancestors came […]

    By Science News

  4. Ketchup’s Shear Mystery

    Shifting suddenly from a thick paste to a runny liquid when shaken or jarred, ketchup is one of many complex fluids that share a property called “shear thinning.”