Interactive Timeline

Modern Environmentalism

As Earth Day celebrates its 40th anniversary, we explore the events that have helped shape environmental policy in the U.S.

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GRAPHIC: Juliet Eilperin, David Fahrenthold, Alicia Cypress, Sarah Sampsel, Sam Funt - The Washington Post, April 21,2010
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A look at Earth Day's influence after it was first organized by a small group of activists in Dupont Circle.

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