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  1. Math

    A Snowy Twist

    Carving a massive block of packed snow into an elegant sculpture presents all sorts of challenges. It’s even tougher when the goal is an intricate mathematical shape with a gravity-defying heart. A Twist in Time. Photo by Stan Wagon Eltanin by Bathsheba Grossman. On display at the northeast corner of 33rd and Walnut St., University […]

    By Ivars Peterson
  2. Chemistry

    A new molecule and a new signature

    In two independent discoveries, chemists have prepared a new form of nitrogen and captured the infrared spectrum of an unusual molecule made up of hydrogen and oxygen.

    By Jessica Gorman
  3. Materials Science

    Scientists make nanothermometer

    A carbon nanotube filled with gallium can be used to measure temperatures in microscopic environments.