This episode features AU Chemistry Professor Stefano Costanzi, an expert both on the harm chemicals pose to living organisms and global security policies aimed at protecting the public from those dangers. In conversation with Drs. Carle and Davidson, Dr. Costanzi discusses the gaps in current policies and practices that allow chemical weapons to proliferate as well as some of his ideas about solutions and tools to narrow those gaps. Dr. Costanzi’s work itself bridges the neuroscience and public policy divide, and in so doing he models how science and policy can be brought into communication with each other. More about Dr. Costanzi’s work can be found here: https://www.american.edu/cas/faculty/costanzi.cfm.