Do energy drinks "give you wings", as is claimed by a popular energy drink advertisement? That's one of the featured case studies on this National Science Foundation-supported website hosted by the University at Buffalo. Using case studies is relatively new to science education, as compared to their extensive history of use in medicine, law, and business education. Visitors interested in finding out the answer to the energy drink question should check out the case study, "A Can of Bull?" All of the case studies here are available for download and provide an "Overview", "Teaching Notes", "Answer Key", and "Comments/Replies". The answer key is password-protected for registered instructors (which is free but requires that the registrant be an instructor with an educational institution). If visitors are not interested in registration, they will find the comments/replies from secondary and post-secondary teachers, to be useful in learning what worked and didn't work in the teaching of the case studies. In addition to the "Case Collection", visitors will find the "Teaching Resources" helpful to find publications on case study literature, a directory of teachers who wrote cases for this site, and assessment of the impact on learners of using case studies to teach science.