Dr. Crerar has been teaching Ecology and Applied Ecology at George Mason since Spring 2007. During part of that time, she was completing her PhD on the genetics of the Steller’s Sea Cow (Hydrodamalis gigas). Her research continues in an effort to understand how many populations of these animals there were and what contributed to their extinction. Many undergraduate students have helped in this work. One was able to take his portion of the research to the Paleontology Conferrence in Berlin in November 2014. Dr. Crerar was also a teacher at the high school level for ten years. During that time, she was given the opportunity to design curriculum for the students at JEB Stuart High School which was used throughout Fairfax County. Before settling into teaching, Dr. Crerar worked the Renaissance Festival circuit in Pennsylvania, Texas, Arizona, and Florida.