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  1. Math

    The Shape of Space

    The debate over the shape of space has taken some new twists with the analysis of satellite snapshots of the universe's temperature waves.

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  2. Math

    Strolling Down Möbius Lane

    The Möbius band is a fascinating object. You can make a simple model of it by joining the ends of a long, narrow strip of paper after giving one end a 180-degree twist. The result is a one-sided, one-edged surface in the form a single closed continuous curve with a twist. A Möbius band. A […]

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  3. Humans

    From the October 28, 1933, issue

    WEATHERMEN UNWITTINGLY POSE HALLOWEEN PICTURE Not ancient warlocks making weather but modern scientists just making a record of it, unintentionally posed a good Halloween picture on the top of Mount Washington, with the aid of a cat that doesn’t like the wind.