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      Knowledge is Power

      Scientific American April 2003

      Solving the Solar Neutrino Problem

      The Sudbury Neutrino Observatory has solved a 30-year-old mystery by showing that neutrinos from the sun change species en route to the earth

      • By Arthur B. McDonald, Joshua R. Klein and David L. Wark on April 1, 2003

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      More in the April 2003 issue of Scientific American
      • Screen Writing
      • Questioning the Oldest Signs of Life
      • I, Clone
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