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      Memorial Day Sale

      Scientific American July 2002

      The Power of Gravity

      Explore the marvels of engineering inside Hoover Dam

      • By W. Wayt Gibbs on July 1, 2002

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      More in the July 2002 issue of Scientific American
      • 15 Answers to Creationist Nonsense
      • Stretching Out the Nanotube
      • The Nose Takes a Starring Role
      View Full Contents
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