Discover Earth Day's 50-Year Legacy, Uniting Billions Annually on April 22. Explore the Movement's History.

In 1969 at a UNESCO conference in San Francisco, peace activist John McConnell proposed a day to honor the Earth and the concept of peace, to first be observed on March 21, 1970, the …

Oct 27, 2009 · Earth Day was founded in 1970 as a day of education about environmental issues and the holiday is now a global celebration that’s sometimes extended into Earth Week, a full …

In 1990 Hayes organized a global Earth Day, which was observed by some 200 million people in more than 140 countries. Since then, Earth Day has been international in scope. The day is …

Apr 11, 2025 · History The first Earth Day was observed on April 22, 1970, after Senator Gaylord Nelson of Wisconsin called for teach-ins on college campuses nationwide to raise awareness …

Earth Day was first observed on April 22, 1970, when an estimated 20 million people nationwide attended the inaugural events at tens of thousands of sites including elementary and …

Nov 6, 2025 · In spring 1970, Senator Gaylord Nelson created Earth Day as a way to force this issue onto the national agenda. Twenty million Americans demonstrated in different U.S. …

Apr 22, 2021 · The first Earth Day took place on April 22, 1970. Recognized by many as the birth of the U.S. environmental movement, the nationwide demonstration spurred a dramatic rise in …

Apr 22, 2025 · Earth Day is an annual event on April 22 that celebrates the planet Earth and raises public awareness about environmental issues. The day is observed worldwide with …

In only 40 years, Earth Day has evolved from a single day celebrating the environmental movement in the United States to a global network that empowers more than a billion people …