A list of various case studies in Astronomy, Biochemistry, Bioinformatics, Chemistry, Ethics, Evolution, Genetics, Behavior, Biology, Botany, Ecology, Epidemiology, Health Sciences, Microbiology, Phylogenetics, Physiology, Physics,  and other disciplines:

http://bioquest.org/icbl/cases.php

National Centre for Case Study Teaching in Science. The purpose of this center is to “promote a nationwide application of active learning techniques to the teaching of science, with a particular emphasis on case studies and problem-based learning” (quotation from front page of the official website). This resource contains many cases in all areas of science:

http://sciencecases.lib.buffalo.edu/cs/ and, more specifically: http://sciencecases.lib.buffalo.edu/cs/collection/

MERLOT II: Multimedia Educational Resource for Learning and Online Teaching. You can have access to many cases in various disciplines by doing a search with the key phrase: “case studies”.

https://www.merlot.org/merlot/index.htm

Stanley, E., (n.d.). Investigative case based learning examples. SERC Pedagogic Service Project. Several cases are provided and some of the Earth Systems topics are in atmosphere, biosphere, climate, Earth’s cycles, human dimensions, hydrology and surface processes. http://serc.carleton.edu/introgeo/icbl/examples.html

Ryerson University – The Teaching and Learning Office – Teaching Methods for Case Studies. This is a pdf file with information on how to pick a case study, how to prepare your students, the importance of knowing your students, how to lead the discussion, what types of questions to be asked, and the evaluation process. http://www.ryerson.ca/content/dam/lt/resources/handouts/CaseMethodBestPractices.pdf

Boston University – Center for Teaching and Learning – Using Case Studies to Teach. This website has a brief introduction on case study use to teach: common elements in case studies, advantages in using them in class, guidelines for using them, how to lead a case discussion and how to evaluate performance. http://www.bu.edu/ctl/teaching-resources/using-case-studies-to-teach/