FrontMatter -- Preface -- Acknowledgments -- Contents -- List of Tables, Figures, and Boxes -- Abbreviations and Acronyms -- Summary -- 1 Introduction -- 2 Environmental Impacts of Genetically Engineered Crops at the Farm Level -- 3 Farm-Level Economic Impacts -- 4 Farm-System Dynamics and Social Impacts of Genetic Engineering -- 5 Key Findings, Remaining Challenges, and Future Opportunities -- Appendix A: Herbicide Selection -- Appendix B: Tillage Systems -- Appendix C: Biographical Sketches of Committee Members.