Holly Jean Buck is a geographer and environmental social scientist, working as an Assistant Professor of Environment and Sustainability at the University at Buffalo in Buffalo, New York. She is the author of After Geoengineering: Climate Tragedy, Repair and Restoration (Verso, 2019), which explores best-case scenarios for carbon dioxide removal, and Ending Fossil Fuels: Why Net Zero Is Not Enough (Verso, 2021), on how to approach fossil fuel phaseout.