Derrick Jensen is an American author and environmental activist known for his critical views on industrial civilization and its impact on the natural world. He has written several books, including Endgame and A Language Older Than Words, where he explores themes of ecology, sustainability, and the relationship between humans and the environment. Jensen is also a speaker and has participated in various interviews and documentaries, advocating for a more profound connection to nature and a reevaluation of societal values. His work often emphasizes the importance of direct action and the need to confront the destructive practices of modern society.