The first Earth Day was celebrated April 22, 1970. 55 years later, we know a lot more about the harmful effect human civilization has on our natural environment. But the desire to find solutions ...

The South Bay Parkland Conservancy celebrated Earth Day a few days early with an event at Hopkins Wilderness Park in Redondo Beach over the weekend. Earth Day is on Tuesday, 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.

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.