In many ways — including counts of the cells and the genes in and on our bodies — we are more microbial than human. Join Rob Knight, professor of chemistry and co-founder of the American Gut Project, for a discussion about techniques scientists are using to find out about microbes across the human body, including the gut, and the ways that microbes contribute to disease. Saturday, Oct. 18, 1-4 p.m., Jennie Smoly Caruthers Biotechnology Building, Butcher Auditorium. Free and open to the public.