One of the founders of Earth Day was Gaylord Nelson, a U.S. Senator from Wisconsin. He said Earth Day and the environmental movement was created "to shake up the political establishment and force this issue onto the national agenda. It was a gamble but it worked."
On April 22, 1970, 20 million Americans rallied for a healthy, sustainable environment. Their actions led to the creation of the Environmental Protection Agency (EPA) and later came the passages of the Clean Air, Clean Water, and Endangered Species acts.