Letters from the March 17, 2007, issue of Science News

By Science News, 15:56 PM April 15, 2008

Disputable thesis

"Counterintuitive Toxicity: Increasingly, scientists are finding that they can't predict a poison's low-dose effects" (SN: 1/20/07, p. 40) took a wrong turn into Hormesis Swamp. The hormesis thesis has been thoroughly discredited by all major radiation organizations and professional societies, and its past conferences have been sponsored by tobacco companies and the U.S. Air Force.

Lynn Howard Ehrle
Plymouth, Mich.

Fat or fit city?

Regarding "Weighing In on City Planning: Could ...

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