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  1. Wonderful World of Color

    What causes color? This nicely illustrated Web site offers vivid explanations of the different ways in which color arises when light interacts with matter. Go to: http://webexhibits.org/causesofcolor/

    By Science News
  2. Math

    Lacing Shoes, Revisited

    What is the best way to lace your shoes? This seemingly simple question, rooted in everyday life, can provoke passionate argument–and prompt a mathematical response. Three common lacing styles. Here are some alternative lacings you could try. The first two work only if your shoes have an even number of eyelet pairs. Watch out, though. […]

    By Ivars Peterson
  3. Math

    Lacing Shoes, Revisited

    What is the best way to lace your shoes? This seemingly simple question, rooted in everyday life, can provoke passionate argument–and prompt a mathematical response.