This publication maps out key moments in the history of environmentalist photography, while also examining contemporary examples of artistic practice.Historically, photography has acted as a technology for documenting the industrial transformation of the world around us; usually to benefit the interests of capitalist markets.An alternative photographic tradition exists, however, in which the indexical image is used 'evidentially' to protest against incidents of industrial pollution.By providing a definition of environmental activism in photographic praxis, and identifying influential practitioners, this publication demonstrates that photography plays a vital role in the struggle against environmental despoliation.This book will be of interest to scholars in photography, art and visual culture, environmental humanities, and the history of photography.