Earth Day is a day designed to inspire awareness and appreciation for the Earth’s environment. It was founded by U.S. Senator Gaylord Nelson as an environmental teach-in held on April 22, 1970.
Earth Day is celebrated in spring in the Northern Hemisphere and autumn in the Southern Hemisphere. Many communities celebrate Earth Week, an entire week of activities focused on environmental issues.

The first Earth Week originated in Philadelphia in 1970 (starting April 16 and culminating on Earth Day, April 22.) Earth Day Network, a group that wishes to become the coordinator of Earth Day globally, asserts that Earth Day is now observed on April 22 on virtually every country on Earth. World Environment Day, celebrated on June 5 in a different nation every year, is the principal United Nations environmental observance.

Earth Day 2010

Earth Day 2010 will coincide with the World People’s Conference on Climate Change, to be held in Cochabamba, Bolivia, and with the International Year of Biodiversity.

The first Earth Day

U.S. Senator Gaylord Nelson of Wisconsin announced his idea for a nationwide teach-in day on the environment in a speech to a fledgling conservation group in Seattle on 20 September 1969, and then again six days later in Atlantic City to a meeting of the United Auto Workers.

Senator Nelson hoped that a grassroots outcry about environmental issues might prove to Washington, D.C. just how distressed Americans were in every constituency. Senator Nelson invited Republican Representative Paul N “Pete” McCloskey to serve as his co-chair and they incorporated a new non-profit organization, environmental Teach-In, Inc., to stimulate participation across the country. Both continued to give speeches plugging the event.

On September 29, 1969, in a front-page New York Times article, Gladwin Hill wrote:

“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, analogous to the mass demonstrations on Vietnam, is being planned for next spring, when a nationwide environmental ‘teach-in’…coordinated from the office of Senator Gaylord Nelson is planned…” Denis Hayes, a Harvard graduate student, read the NYT article and traveled to Washington to get involved.

He had been student body president and a campus activist at Stanford University in McCloskey’s district and where Teach-In board member Paul Ehrlich was a professor. He thought he might be asked to organize Boston. Instead, Nelson eventually asked Hayes to drop out of Harvard, assemble a staff, and direct the effort to organize the United States. Hayes would go on to become a widely recognized environmental advocate.

Nelson’s suggestion was difficult to implement, as the Earth Day movement proved to be autonomous with no central governing body. As Senator Nelson attests, it simply grew on its own:

Earth Day worked because of the spontaneous response at the grassroots level. We had neither the time nor resources to organize 20 million demonstrators and the thousands of schools and local communities that participated. That was the remarkable thing about Earth Day. It organized itself.

On April 22 1970, Earth Day marked the beginning of the modern environmental movement. Approximately 20 million Americans participated. 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, Freeway and expressway revolts, the loss of wilderness, and the extinction of wildlife suddenly realized they shared common values.

Media coverage of the first Earth Day included a One-Hour Prime-time CBS News Special Report called “Earth Day: A Question of Survival,” with correspondents reporting from a dozen major cities across the country, and narrated by Walter Cronkite (whose backdrop was the Earth Week Committee of Philadelphia’s logo). The largest segment of the special report (20 minutes of the 60-minute program) focused on Earth Day in Philadelphia.

The Earth Day Name

According to Senator Nelson, the moniker “Earth Day” was “an obvious and logical name” suggested by “a number of people” in the fall of 1969, including, he writes, both “a friend of mine who had been in the field of public relations” and “a New York advertising executive,” Julian Koenig.

Koenig was on Nelson’s organizing committee in 1969. April 22 also happened to be Koenig’s birthday, and as “Earth Day” rhymed with “birthday,” the idea came to him easily, he said. Other names circulated during preparations—Nelson himself continued to call it the National Environment Teach-In, but press coverage of the event was “practically unanimous” in its use of “Earth Day,” so the name stuck.

Subsequent Earth Day Events

To turn Earth Day into a sustainable annual event rather than one that occurred every 10 years, Senator Nelson and Bruce Anderson, New Hampshire’s lead organizer in 1990, formed Earth Day USA. Building on the momentum created by thousands of community organizers around the world, Earth Day USA coordinated the next five Earth Day celebrations through 1995, including the launch of EarthDay.org. Following the 25th Anniversary in 1995, the coordination baton was handed to Earth Day Network.

As the millennium approached, Hayes agreed to spearhead another campaign, this time focusing on global warming and pushing for clean energy. The April 22 Earth Day in 2000 combined the big-picture feistiness of the first Earth Day with the international grassroots activism of Earth Day 1990. For 2000, Earth Day had the Internet to help link activists around the world. By the time April 22 came around, 5,000 environmental groups around the world were on board, reaching out to hundreds of millions of people in a record 184 countries. Events varied: A talking drum chain traveled from village to village in Gabon, Africa, for example, while hundreds of thousands of people gathered on the National Mall in Washington, D.C., USA.

Earth Day 2007 was one of the largest Earth Days to date, with an estimated billion people participating in the activities in thousands of places like Kiev, Ukraine; Caracas, Venezuela; Tuvalu; Manila, Philippines; Togo; Madrid, Spain; London; and New York.

Earth Day Network

Earth Day Network was founded by Denis Hayes and the organizers of the first Earth Day in 1970 and by other national organizers, including Pam Lippe, to promote environmental activism and year-round progressive action, domestically and internationally.

Earth Day Network members include NGOs, quasi-governmental agencies, local governments, activists, and others. Earth Day Network members focus on environmental education; local, national, and global policies; public environmental campaigns; and organizing national and local earth day events to promote activism and environmental protection. The international network reaches over 19,000 organizations in 192 countries, while the domestic program engages 10,000 groups and over 100,000 educators coordinating millions of community development and environmental-protection activities throughout the year.

History of the Equinox Earth Day

The equinoctial Earth Day is celebrated on the March equinox (around March 20) to mark the precise moment of astronomical mid-spring in the Northern Hemisphere, and of astronomical mid-autumn in the Southern Hemisphere. An equinox in astronomy is that moment in time (not a whole day) when the center of the Sun can be observed to be directly “above” the Earth’s equator, occurring around March 20 and September 23 each year. In most cultures, the equinoxes and solstices are considered to start or separate the seasons.

John McConnellfirst introduced the idea of a global holiday called “Earth Day” at the 1969 UNESCO Conference on the Environment. The first Earth Day proclamation was issued by San Francisco Mayor Joseph Alioto on March 21, 1970. Celebrations were held in various cities, such as San Francisco and in Davis, California with a multi-day street party. UN Secretary-General U Thant supported McConnell’s global initiative to celebrate this annual event; and on February 26, 1971, he signed a proclamation to that effect, saying:

May there be only peaceful and cheerful Earth Days to come for our beautiful Spaceship Earth as it continues to spin and circle in frigid space with its warm and fragile cargo of animate life.

United Nations secretary-general Kurt Waldheim observed Earth Day with similar ceremonies on the March equinox in 1972, and the United Nations Earth Day ceremony has continued each year since on the day of the March equinox (the United Nations also works with organizers of the April 22 global event). Margaret Mead added her support for the equinox Earth Day, and in 1978 declared:

“EARTH DAY is the first holy day which transcends all national borders, yet preserves all geographical integrities, spans mountains and oceans and time belts, and yet brings people all over the world into one resonating accord, is devoted to the preservation of the harmony in nature and yet draws upon the triumphs of technology, the measurement of time, and instantaneous communication through space.

EARTH DAY draws on astronomical phenomena in a new way – which is also the most ancient way – by using the vernal Equinox, the time when the Sun crosses the equator making the length of night and day equal in all parts of the Earth. To this point in the annual calendar, EARTH DAY attaches no local or divisive set of symbols, no statement of the truth or superiority of one way of life over another.

But the selection of the March Equinox makes planetary observance of a shared event possible, and a flag which shows the Earth, as seen from space, appropriate.”

At the moment of the equinox, it is traditional to observe Earth Day by ringing the Japanese Peace Bell, which was donated by Japan to the United Nations. Over the years, celebrations have occurred in various places worldwide at the same time as the UN celebration. On March 20, 2008, in addition to the ceremony at the United Nations, ceremonies were held in New Zealand, and bells were sounded in California, Vienna, Paris, Lithuania, Tokyo and many other locations. The equinox Earth Day at the UN is organized by the Earth Society Foundation.