American Scientist  
The Magazine of Sigma Xi, The Scientific Research Society  
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elcome to the Web site of American Scientist, an illustrated bimonthly magazine of science and technology. Published by Sigma Xi, The Scientific Research Society, American Scientist features reviews of current research written by prominent scientists and engineers, the most comprehensive book review section of any science magazine and a handful of regular columns. We welcome you to browse sample content from our current issue and our archives—and hope you learn something new as you explore!

May-June 2001 Issue


How Were the Comets Made?

 

Preserving Salmon Biodiversity

The number of Pacific salmon has declined dramatically. But the loss of genetic diversity may be a bigger problem.

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