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  1. Earth

    Global Warming Debate Gets Hotter

    President Bush gets the global warming report he commissioned just days before he meets with European leaders.

    By Charlotte Schubert
  2. Math

    Bubbles and Math Olympiads

    Predicting the geometric shapes of soap bubble clusters can lead to surprisingly difficult mathematical problems. Which one of these two configurations of five planar bubbles of equal area has the smaller total perimeter? The more symmetric candidate isn’t always the winner. Frank Morgan Frank Morgan of Williams College in Williamstown, Mass., recently illustrated such difficulties […]

    By Ivars Peterson
  3. Math

    Bubbles and Math Olympiads

    Predicting the geometric shapes of soap bubble clusters can lead to surprisingly difficult mathematical problems.