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Published online 4 December 2002 | Nature | doi:10.1038/news021202-3
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Corn could make cotton pests Bt resistant
Insects offered GM-free refuges are eating modified crops further afield.
Moths in the United States are feeding on corn all summer before flying south to munch cotton in the autumn, new research shows1. The annual exodus could stymie future efforts to stem pests' resistance to genetically modified crops.
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