Hanna Reisler has been Professor of Chemistry at USC since 1987. Her research interests are in the area of chemical reaction dynamics. Specifically, she studies the photophysics, photochemistry and reaction mechanisms of molecules important in the atmosphere, combustion, and biology using sophisticated laser and imaging techniques often in collaboration with theory. Her recent work has focused also on the understanding bond breaking processes in networks of water and ice and the photochemical production of transient species relevant to atmospheric processes. She was appointed as University Professor at USC and elected to the American Academy of Arts and Sciences in 2021. In 2002 she was appointed the inaugural holder of the Lloyd Armstrong Jr. Endowed Chair in Science and Engineering in recognition of her leadership role in advancing the careers of women in science and engineering.