In this interview, David Zierler, Oral Historian for AIP, interviews Norman Wagner, Unidel Robert L. Pigford Chair in Chemical and Biomolecular Engineering at the University of Delaware. Wagner recounts his childhood in Pennsylvania and his undergraduate experience at Carnegie Mellon and his decision to study chemical engineering at Princeton. He discusses his graduate research at Los Alamos and Sandia and his postdoctoral research in Germany. The bulk of the interview covers Wagner’s wide-ranging research agenda at the University of Delaware. He discusses his strategic partnership with the NIST Center for Neutron Research, and the range of commercial endeavors that he has been involved in as a result of his research in soft matter physics. Wagner explains his work in biomedical engineering, and his collaboration with NASA on Mars-related research. At the end of the interview, Wagner provides a broad-based explanation of rheology and its development as a distinct scientific field.