There is clear overlap in interests and influences for the fields of Atlantic, environmental, and southern history, but scholarship in them has often advanced on parallel tracks. This anthology places itself at the intersection, pushing for a new confluence. Editors Thomas Blake Earle and D. Andrew Johnson provide a lucid introduction to this collection of essays that brings these disciplines together. With this volume, historians explore crucial insights into a self-consciously Atlantic environmental history of the American South, touching on such topics as ideas about slavery, gender, climate, “colonial ecological revolution,” manipulation of the landscape, infrastructure, resources, and exploitation. By centering this project on a region, the American South—defined as the southeastern reaches of North America and the Caribbean— the authors interrogate how European colonizers, Native Americans, and Africans interacted in and with the (sub)tropics, a place foreign to Europeans. Challenging the concepts of “Atlantic” and “southern” and their intersection with “environments” is a discipline-defining strategy at the leading edge of emerging scholarship. Taken collectively, this book should encourage more readers to reimagine this region, its time periods, climate(s), and ecocultural networks.