chapter 1 Variability and uncertainty in crop-to-wild hybridization -- chapter 2 Factors affecting the spread of resistant Arabidopsis thaliana populations -- chapter 3 Bt-crops: Evaluating benefits under cultivation and risks from escaped transgenes in the wild -- chapter 4 Resisting resistance to Bt-corn -- chapter 5 Ecological risks of transgenic virus-resistant crops -- chapter 6 Impacts of genetically engineered crops on non-target herbivores: Bt-corn and monarch butterflies as a case study -- chapter 7 Transgenic host plant resistance and non-target effects -- chapter 8 Release, persistence, and biological activity in soil of insecticidal proteins from Bacillus thuringiensis -- chapter 9 Survival, persistence, transfer: The fate of genetically modified microorganisms and recombinant DNA in different environments -- chapter 10 The spread of genetic constructs in natural insect populations -- chapter 11 Ecological and community considerations in engineering arthropods to suppress vector-borne disease -- chapter 12 Environmental risks of genetically engineered vaccines -- chapter 13 Methods to assess ecological risks of transgenic fish releases -- chapter 4 teen. Controversies in designing useful ecological assessments of genetically engineered organisms.