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The cover of the 4 May 2007 issue of
Science
[[Chris Bickel,
Science
staff illustrator]]
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![[[Chris Bickel, <i>Science</i> staff illustrator]]](http://www.aaas.org/news/releases/2008/images/0507illustrator_20070504_lg.jpg "[[Chris Bickel, <i>Science</i> staff illustrator]]")