Cowspiracy: The Sustainability Secret is a 2014 documentary film that explores the impact of animal agriculture on the environment, and investigates the policies of environmental organizations on this issue. “Animal agriculture is the leading cause of deforestation, water consumption and pollution, is responsible for more greenhouse gases than the transportation industry, and is a primary driver of rainforest destruction, species extinction, habitat loss, topsoil erosion, ocean “dead zones,” and virtually every other environmental ill. Yet it goes on, almost entirely unchallenged.”