Geoffrey Henderson is a PhD Candidate in Political Science at the University of California, Santa Barbara and a Visiting Graduate Scholar in Political Science at Johns Hopkins University. He studies how civic organizations and social movements stimulate political participation and form coalitions, with a focus on the climate justice movement. Geoffrey has studied efforts to engage people in small-dollar campaign finance and environmental activism, how environmental attitudes affect behavior, and how Members of Congress learn their constituents’ opinions. His current research examines state-level coalitions of environmental and labor groups advocating for policies to address climate change. Prior to graduate school, Geoffrey worked as a climate policy researcher at the World Resources Institute. He received his B.A. from Haverford College and his M.A. from UC Santa Barbara.