Nation World Why Earth Day is on April 22 The initial movement in 1970 is known as the largest secular day of protest in the world.

Earth Day recognizes the environmental movement. Here's how it started and why it’s still celebrated every April 22.

As the events expanded into a nationwide campaign, the first Earth Day was held on April 22, 1970. The initial movement in 1970 is known as the largest secular day of protest in the world.

As the events expanded into a nationwide campaign, the first Earth Day was held on April 22, 1970. The initial movement in 1970 is known as the largest secular day of protest in the world.

As the events expanded into a nationwide campaign, the first Earth Day was held on April 22, 1970. The initial movement in 1970 is known as the largest secular day of protest in the world.

Nation World Why Earth Day is on April 22 The initial movement in 1970 is known as the largest secular day of protest in the world.

Nation World Why Earth Day is on April 22 The initial movement in 1970 is known as the largest secular day of protest in the world.

As the events expanded into a nationwide campaign, the first Earth Day was held on April 22, 1970. The initial movement in 1970 is known as the largest secular day of protest in the world.

Since programming began with “teach-ins” on college campuses, Nelson and Hayes decided to make Earth Day fall on a weekday after Spring Break but before final exams, so students would be available to ...