The Univeristy of Nebraska Lincoln has a wonderful site called Plant and Soil Sciences eLibrary. It is an educational site with beginner and advanced articles in English and Spanish. Topics include herbicides, plant breeding, and genetic engineering. They include power point type videos on a variety of topics. My favorite is: Who wants to be a genetic engineer? in which the viewer can choose to make Bt corn or cinnamon flavored apples. It’s adorable and educational!