This book analyzes the role of different political economic sectors that drive deforestation and clearcutting, including mining, ranching, export-oriented plantation agriculture, and forestry. The book examines the key actors, systems, and technologies behind the worsening climate/biodiversity crises that are aggravated by deforestation. The book is theoretically innovative, uniting political economic, sociological, political ecologic, and transdisciplinary theories on the politics of extraction. The research relies on the author’s multi-sited political ethnography, including field research, interviews, and other approaches, across multiple frontiers of deforestation, focusing on Brazil, Peru, and Finland. Why do key global extractivist sectors continue to expand via deforestation and what are the differences between sectors and regions? The hypothesis is that regionally and sometimes nationally dominant politically powerful economic sectors are major explanatory factors for if, how, and where deforestation occurs. To address the deepening global crises, it is essential to understand these power relations within different types of deforesting extractivisms.