Peter Buseck and his research group are known for their research in solid state geochemistry and mineralogy, geochemistry and cosmochemistry, and atmospheric geochemistry. They pioneered in the use of transmission electron microscopy to study minerals, meteorites, and aerosol particles at close to the atomic scale. At Arizona State University he won the Graduate College Outstanding Graduate Mentor Award, and he was named a Graduate College Distinguished Research Fellow. Professor Buseck has had visiting appointments at Oxford and Stanford Universities, the University of Paris (VI, VII), and Harvard University. He was assistant to the director of the U.S. National Science Foundation in 1994-5. He is a fellow of the American Association for the Advancement of Science, the Geological Society of America, the Meteoritical Society, and the Mineralogical Society of America. Professor Buseck conducts research on: (1) crystal structures and defects in minerals at the atomic level using high-resolution transmission electron microscopy; (2) the geochemistry and mineralogy of various types of meteorites (carbonaceous chondrites, enstatite chondrites, pallasites, etc.); and (3) the nature of aerosol particles such as airborne minerals, soot, and other small grains, their chemical and physical reactions (e.g., deliquescence, efflorescence) in the atmosphere, and their effects on air quality and climate change.