This story explores the origins and significance of Earth Day. It begins by discussing the United Nations' Earth Day, also known as Equinox Earth Day, celebrated on the first day of spring to raise awareness about environmental issues. This version of Earth Day was introduced by John McConnell in 1969 and is marked by the ringing of the U.N. Peace Bell. Another Earth Day celebration occurred on April 22, initiated in 1970 by U.S. Senator Gaylord Nelson, who wanted to educate people on environmental matters, leading to widespread demonstrations and "teach-ins."