The US Department of Agriculture's Agriculture Research Service provides this research question and answer page to outline its recent findings about Bt corn, which is genetically modified to include a natural soil bacteria that functions as an insecticide. The findings indicate that "there is no significant risk to monarch butterflies from environmental exposure to Bt corn." Several other questions about the research are answered in non-scientific terms, and there are several links to general information about Bt corn and monarch butterflies, as well as scientific papers including the one that this Web page summarizes.