John C. Duncan, Ph.D., professor, specializes in anatomy, human development and anatomy, and cell biology. He has been a PUC faculty member since 2000, and before that taught biology at the University of Delaware. He is interested in gene regulation during development, reef aquariums, and science fiction.

Floyd E. Hayes, Ph.D., professor, is a zoologist specializing in the ecology, behavior and biogeography of birds. While an undergraduate student, Dr. Hayes took off a year to teach in an elementary school on the island of Kosrae in Micronesia. He worked for three years as a vertebrate biologist for the US Peace Corps, based in the National Museum of Natural History of Paraguay. He also taught biology for nine years at Caribbean Union College (now University of the Southern Caribbean) and the University of the West Indies in Trinidad and Tobago, and spent a year working as a wildlife biologist for the Division of Fish and Wildlife in St. Thomas, US Virgin Islands. Dr. Hayes was editor in chief of Journal of Caribbean Ornithology during 2005-2013 and was a Fulbright Scholar to Paraguay in 2012. He enjoys birding, rock climbing and snorkeling.

Bryan D. Ness, Ph.D., professor, has been at PUC since 1989. His research interests include plant systematics and genetics. He advises in the areas of biology, natural science, veterinary medicine, medical radiography and occupational therapy.

Dr. Backil Sung has been at PUC since 2012. He has degrees in medicine (M.D.), physiology (M.S.), and medical biotechnology (Ph.D). He has authored or co-authored 39 scientific papers in neuroscience, mainly in the area of pain mechanisms. He has also authored two book chapters, and frequently goes on medical mission trips. He teaches Neurobiology, Microbiology, Medical Microbiology and Biological Foundations.

Robin E. Vance, Ph.D., professor, has taught at PUC since 2001. He specializes in physiology and neurobiology. Dr. Vance's research interests include Antimutagenesis & Anticarcinogenesis, and he advises in the areas of biology and medicine. He taught at Union College for twelve years and chaired their Division of Science & Mathematics from 1996 to 2000. He enjoys tennis, walking and snorkeling.