Marcus Sarofim is a Senior Research Scientist in the Health, Environment, and Policy program of the NYU Marron Institute. He spent 17 years at EPA's Climate Change Division, where he contributed to and helped defend the 2009 Greenhouse Gas Endangerment Finding, led climate impacts assessment work, was part of the climate website and indicators team, and developed the FrEDI model for estimating U.S. damages from greenhouse gas emissions at the state level. He served as a U.S. Representative to the Arctic Council's Expert Group on Short-Lived Climate Forcers. Marcus is a Lecturer at Johns Hopkins, holds a PhD from MIT, is a former AAAS Science and Technology Policy Fellow, and has published over 50 peer-reviewed papers. He writes at The Saraph Report on Substack.