The first Earth Day, on April 22, 1970, activated 20 million Americans from all walks of life and is widely credited with launching the modern environmental movement.
Today more than one billion people participate in Earth Day activities making it the largest civic observance in the world.
For more information, visit www.earthday.org/. And don't forget to tell us how you plan on honoring the day.
Click here to follow Daily Voice Greenwich and receive free news updates.