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By Science News

Magazine Issue: Vol. 140 No. #18, November 2, 1991

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Questions or comments on this article? E-mail us at feedback@sciencenews.org | Reprints FAQ

A version of this article appears in the November 2, 1991 issue of Science News.

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Related Stories

Health & Medicine
Scientists identify a long-sought by-product of some drinking water treatments

By Sid Perkins16 hours ago
Animals
For adult chimps, playing may be more important than previously thought

By Gennaro Tomma19 hours ago
Astronomy
This is the first close-up image of a star beyond our galaxy

By Sophie Hartley22 hours ago

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Science News was founded in 1921 as an independent, nonprofit source of accurate information on the latest news of science, medicine and technology. Today, our mission remains the same: to empower people to evaluate the news and the world around them. It is published by the Society for Science, a nonprofit 501(c)(3) membership organization dedicated to public engagement in scientific research and education (EIN 53-0196483).

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