Alan D. Penman is a retired physician, formerly a professor in the Department of Preventive Medicine at the John D. Bower School of Population Health at the University of Mississippi Medical Center in Jackson, Mississippi. There, he directed and taught courses in epidemiology, biostatistics, public health, global health, and evolutionary medicine for medical students and graduate medical faculty. Dr. Penman earned his medical degree from the Aberdeen University Medical School in 1979, a Master of Science degree in Clinical Tropical Medicine from the London School of Hygiene and Tropical Medicine in 1981, a Master of Public Health degree from the University of Alabama at Birmingham in 1998, and a PhD in Biostatistics from the University of Mississippi in 2008.Joe Alcock is a practicing clinician and professor of emergency medicine at the University of New Mexico (UNM), with twenty-five years' experience in academic emergency medicine. After earning his medical degree at UCLA andcompleting a residency at UNM, Dr. Alcock designed and taught a popular course on evolutionary medicine for UNM undergraduate and graduate students. He also initiated an evolutionary medicine elective for medical students at the UNM School of Medicine, which is now in its seventeenth year. His research focus is the human relationship with the microbiome through an evolutionary lens of conflict and cooperation. He has featured in scientific outreach podcasts, web articles, video shorts, and meetings, aiming to expand the reach of evolutionary medicine.