Ernest Callenbach is an American writer best known for his ecotopian novels which spurred a cult environmental movement in the seventies. In 1975, Callenbach authored Ecotopia, a utopian novel about a country formed from states in the Pacific North West of the United States. The book had an important impact on the emerging “green” counterculture movement, and presented many predictions about the future. He has since continued to dedicate his non-fiction books to the subject of sustainability.