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Earth Day
References & Edit History Related Topics
Images
Earth Day A large hand-painted banner showing a globe and the words Earth and a speech bubble reading Help rises above a crowd gathered outdoors in Central Park, New York City. Earth Day: Costa Rica Indian schoolchildren dressed in orange uniforms march in a parade, each holding a large, leafy tree-shaped cutout above their heads to celebrate Earth Day in New Delhi. A large crowd sits on the grass facing a stage with banners reading Earth Day on the National Mall, with the U.S. Capitol building visible in the background.

Earth Day: References & Edit History

Article Contributors

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Revised opening paragraph and added section headings. Apr 09, 2026
Added cross-reference. Jun 26, 2025
Added a link to a timeline of environmentalism. Media revised. Mar 14, 2025
Added information on the first Earth Day and mentioned that many of the planned 50th anniversary celebrations in 2020 were affected by the COVID-19 pandemic. Mar 31, 2020
Media added. Mar 23, 2018
Article revised. Mar 20, 2008
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