Addressing climate change will entail major challenges for economic growth, employment, inflation, and public finances. Mitigating the impact of global warming will yield benefits and costs that are yet to be quantified and defined for the global economy and for nations, workers, households, and companies. The Green Frontier: Assessing the Economic Implications of Climate Action offers research originally presented at a major conference at the Peterson Institute for International Economics in June 2023 in Washington, DC, organized to shed light on this still unexplored field of study and recommend policies for the future.