After teaching a smaller version of the course this summer, I am very excited to be head instructor of IB35AC, a 300 student class on human biological variation, this fall. IB35AC is a lower-level class that fulfills the American Cultures component of the undergraduate degree at UC Berkeley, a breadth requirement unique to UC Berkeley that asks all students to explore the ethnic and racial variation within the United States from a comparative perspective. This course also addresses human biological variation, including phenotypes like skin pigmentation, intelligence, sex, and gender, from biomedical, anthropological, and evolutionary perspectives. A key goal of this class is to help students understand the role of both biological and cultural components of human variation in the evolution of our species.