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Senator Gaylord Nelson of Wisconsin organized the first Earth Day on April 22, 1
1970 Event

April 22

Earth Day Born: The Environmental Movement Takes Root

Senator Gaylord Nelson of Wisconsin organized the first Earth Day on April 22, 1970, inspired by the energy of anti-war protests and a massive oil spill off the coast of Santa Barbara, California, in 1969. Twenty million Americans participated, roughly 10% of the US population, making it the largest civic event in American history to that date. Teach-ins were held at thousands of colleges and schools. The immediate political impact was extraordinary: within eight months, Congress created the Environmental Protection Agency. The Clean Air Act passed in 1970, the Clean Water Act in 1972, and the Endangered Species Act in 1973. Earth Day is now observed in 192 countries, and the date has become the unofficial birthday of the modern environmental movement.

April 22, 1970

56 years ago

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What Else Happened on April 22

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