Peter A. Crozier is an Associate Professor in the School for Engineering of Matter, Transport and Energy at Arizona State University. He has extensive experience in developing and applying advanced transmission electron microscopy techniques to problems related to energy and the environment with special emphasis on oxides, catalytic materials and atmospheric aerosols. He has 15 years of experience in developing and applying the technique of in situ environmental transmission electron microscopy to problems in catalytic materials. He is also applying electron energy-loss spectroscopy to determine the optical properties of carbonaceous aerosols for climate change. He is a member of the Microscopy Society of America, the Materials Research Society and the North American Catalysis Society. He serves on the editorial boards of Micron and Microscopy Today. He currently serves as director of physical science on the council of the Microscopy Society of America and is Treasurer of Arizona Imaging and Microanalysis Society. He is a Fellow of the Microscopy Society of America, and is currently director of the ASU Winter School on High Resolution Electron Microscopy. He has organized numerous workshops, schools and symposia and is currently scientific co-chair of the EDGE meetings. He has published more than 130 archival journal and book articles.