Dr. Sallie Marston is professor emeritus in the School of Geography, Development, and Environment at the University of Arizona, where she held the distinguished title of regents professor before retiring in May of 2021. Marston is the author of numerous influential publications in political and human geography and has mentored more than 50 graduate students. Her research and writing on the politics of scale have shaped how we understand this pivotal concept in the discipline of geography, and in the social sciences more broadly. Marston’s many creative research collaborations with other scholars, as well as with students, writers, and activists, give her research a rare combination of breadth and depth. She is a scholar’s scholar, an innovative pedagogue, and a lovely human being.