Coal has long been a major part of the economy of the Navajo Nation. But that’s largely changed, in no small part because of the closure of the Navajo Generating Station a few years ago.

Andrew Curley examines the impacts of coal’s legacy in a new book called “Carbon Sovereignty: Coal, Development, and Energy Transition in the Navajo Nation.” Curley is an assistant professor in the School of Geography, Development and Environment at the University of Arizona; he’s also a member of the Navajo Nation.