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Science  27 Oct 2000:
Vol. 290, Issue 5492, pp. 711
DOI: 10.1126/science.290.5492.711a

Two surveys of scientists and others associated with animal research “suggest that most animal researchers favor [Animal Welfare Act] regulation of mice, rats, and birds.” Various ideas are offered about what might have caused the gully-like features recently found on Mars. The author of the 1973 book Stability and Complexity in Model Ecosystems clarifies a major point of his book that has been misinterpreted. And imagine beating Muhammed Ali in his prime in the boxing ring—the probability of that happening (and there is one) illustrates the role of “outrageous events” in calculating statistical significance.

Letters in This Issue

Poll Shows Researchers Favor Lab Animal Protection

Scott Plous and Harold A. Herzog

Ideas About the Surface Runoff Features on Mars

Nick Hoffman; L. Paul Knauth, Donald Burt; R. Stephen Saunders and Richard W. Zurek; Peter T. Doran, Steven L. Forman

Relation Between Diversity and Stability, in the Real World

Sir Robert M. May

Outrageous Events: Don't Count Them Out

William Bishop Fairley

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