Earth Day is one of two observances, both held annually during spring in the northern hemisphere, and autumn in the southern hemisphere. These are intended to inspire awareness of and appreciation for the Earth's environment. The United Nations celebrates an Earth Day each year on the March equinox, a tradition which was founded by peace activist John McConnell in 1969. A second Earth Day, which was founded by U.S. Senator Gaylord Nelson as an environmental teach-in in 1970, is celebrated in many countries each year on April 22.

History of the April 22 Earth Day

Five months before the first April 22 Earth Day, on Sunday, November 30, 1969, The New York Times carried a lengthy article by Gladwin Hill reporting on the rising tide of environmental events:

"Rising concern about the environmental crisis is sweeping the nation's campuses with an intensity that may be on its way to eclipsing student discontent over the war in Vietnam...a national day of observance of environmental problems...is being planned for next spring...when a nationwide environmental 'teach-in'...coordinated from the office of Senator Gaylord Nelson is planned...." Senator Nelson also hired Denis Hayes as the coordinator.

Each year, the April 22 Earth Day marks the anniversary of the birth of the modern environmental movement in 1970. Among other things, 1970 in the United States brought with it the Kent State shootings, the advent of fiber optics, "Bridge over Troubled Water," Apollo 13, the Beatles' last album, the death of Jimi Hendrix, and the meltdown of fuel rods in the Savannah River nuclear plant near Aiken, South Carolina -- an incident not acknowledged for 18 years. At the time, most Americans were consuming leaded gas in massive V8 sedans. Heavy industry released smoke and sludge with little fear of legal consequences or bad press. Air pollution was commonly accepted as the smell of prosperityFact: date=April 2008. Environment was a word that appeared more often in spelling bees than on the evening news. The 1970 Earth Day helped to change many peoples' minds.

On April 22, 20 million Americans participated, with a goal of a healthy, sustainable environment. Denis Hayes, the national coordinator, and his youthful staff organized massive coast-to-coast rallies. Thousands of colleges and universities organized protests against the deterioration of the environment. Groups that had been fighting against oil spills, polluting factories and power plants, raw sewage, toxic dumps, pesticides, freeways, the loss of wilderness, and the extinction of wildlife suddenly realized they shared common values.