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LiveScience
LiveScience
Patrick Pester

Earth Day: When is it and why do we celebrate it?

A view of Earth from space.

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 rallies, conferences, school projects and other activities.

Sen. Gaylord Nelson started Earth Day in 1970. The event helped increase public support for the creation of the Environmental Protection Agency (EPA) to address environmental issues. Earth Day has since contributed to the passage of many environmental laws in the U.S.

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