In November, the USGCRP released its fifth national climate assessment. The report’s mitigation chapter spells out those steps to reduce emissions, including summarizing progress to date and identifying “pathways to drastically cut emissions in ways that improve human health, protect jobs, save resources, and redress historical inequities.” The report includes key contributions by co-author Sanya Carley, now the faculty co-director of the Kleinman Center for Energy Policy and the Presidential Distinguished Professor of Energy Policy and City Planning at Penn—the mitigation chapter authors combined their expertise in earth science, economics, and climate modeling to outline options for greater emissions mitigation.