Today in History
April 22, 1970
Embracing the Earth
An estimated 20 million people participate in Earth Day events held for the first time in communities all across the United States. The environmental "teach-in" is the brainchild of Senator Gaylord Nelson, who is inspired by the anti-war "teach-ins" of the Vietnam Era. This year, more than a billion people worldwide are expected to participate in Earth Day festivities.
Today's Feature History Article
A collection of Smithsonian's recent environmental stories
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