Earth Day was a unified response to an environment in crisis — oil spills, smog, rivers so polluted they literally caught fire.
On April 22, 1970, 20 million Americans — 10% of the U.S. population at the time — took to the streets, college campuses and hundreds of cities to protest environmental ignorance and demand a new way forward for our planet.
The first Earth Day is credited with launching the modern environmental movement, and is now recognized as the planet’s largest civic event.
The decade that followed saw some of America’s most popular and powerful environmental legislation: updates to the Clean Air Act and the creation of the Clean Water Act, the Endangered Species Act and the establishment of the Environmental Protection Agency.