Senator Gaylord Nelson was an American politician and environmentalist, serving as a U.S. Senator from Wisconsin from 1963 to 1981. He is best known for founding Earth Day in 1970, which aimed to raise awareness about environmental issues and promote conservation efforts. Nelson's commitment to environmental protection helped shape national policies and inspired a generation of activists. Throughout his career, Nelson advocated for various environmental initiatives, including the establishment of the Environmental Protection Agency (EPA) and the passage of key legislation like the Clean Air Act and the Clean Water Act. His legacy continues to influence environmental movements today.