A Meta-Analysis of Effects of Bt Cotton and Maize on Nontarget Invertebrates
Michelle Marvier, Chanel McCreedy, regetz [at] nceas [dot] ucsb [dot] edu (Jim Regetz), and Peter Kareiva

Science  316, 5830 (2007)

Abstract
Press Release
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Nontarget Effects of Bt Crops DatabaseThis database and its accompanying metadata are now available to the public through a searchable web interface.