Sarkis Mazmanian, PhD, is the Luis and Nelly Soux Professor of Microbiology in the Division of Biology and Biological Engineering at Caltech. His laboratory pioneered the concept that studying the gut microbiome may lead to novel concepts in drug development for various immunologic and neurological diseases, work that has resulted in several ongoing clinical trials. Dr. Mazmanian has enjoyed numerous honors including the MacArthur Foundation “Genius Grant.” Most importantly, he has trained many students and fellows who have gone on to successful independent careers in science, medicine, and industry.