Book excerpt: What happens when fossil fuels run out? How do communities and cultures survive? Central Appalachia and south Wales were built to extract coal, and faced with coal's decline, both regions have experienced economic depression, labor unrest, and out-migration. After Coal focuses on coalfield residents who chose not to leave, but instead remained in their communities and worked to build a diverse and sustainable economy. It tells the story of four decades of exchange between two mining communities on opposite sides of the Atlantic, and profiles individuals and organizations that are undertaking the critical work of regeneration. The stories in this book are told through interviews and photographs collected during the making of After Coal, a documentary film produced by the Center for Appalachian Studies at Appalachian State University and directed by Tom Hansell. Considering resonances between Appalachia and Wales in the realms of labor, environment, and movements for social justice, the book approaches the transition from coal as an opportunity for marginalized people around the world to work toward safer and more egalitarian futures.