This Week's Letters

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Science  20 Dec 1996:
Vol. 274, Issue 5295, pp. 1993-1997
DOI: 10.1126/science.274.5295.1993


The technology for “quick and precise” analysis of airborne particles may, or may not, be at hand. The “vast majority” of public debates about evolution are said to decrease public support for it. Despite new information provided by genetic analysis, is this “the best time” to reorganize the classification of living things? Altering cotton genetically so that it can resist pests has allowed thousands of farmers to “entirely eliminate insecticide spray treatments,” according to the Monsanto Company. And do fossil stromatolites provide evidence that animals originated on Earth at least 1 billion years ago? (Right, the arthropod Marrella, approximately 19 millimeters long, lived about 530 million years ago.)

Letters in This Issue

Linnaean Categories

Alessandro Minelli

Debating Creationists

Eugenie C. Scott

Bollgard Cotton Performance

Robert T. Fraley

Japanese Science

Izumi Hironari

Meeting Standards

Thomas Borelli and Allen Kassman

Dating the Origin of Animals

Kenneth J. McNamara

Airborne Particle Analysis

Bernhard Spengler, et al.

Thomas Peter and Daniel M. Murphy

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