Tag: 1970

Earth Day's Inaugural Observation in 1970

23 Apr 2026 8:34 a.m. · Source: U.S. Library of Congress

The first Earth Day was observed on April 22, 1970, with an estimated 20 million Americans participating in events across the country at schools and community sites.

Environment General Politics Education Earth Day History 1970 Activism Conservation U.S. Library of Congress