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      Digital & 4-Year Archive

      Scientific American February 2000

      Uprooting the Tree of Life

      About 10 years ago scientists finally worked out the basic outline of how modern life-forms evolved. Now parts of their tidy scheme are unraveling

      • By W. Ford Doolittle on February 1, 2000

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      More in the February 2000 issue of Scientific American
      • An Elemental Mystery
      • 50, 100 and 150 Years Ago: The Torid Lysenko Controversy, First Nobel Prizes and Goiter
      • Fan Mail from the Fringe
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