The official Earth Day flag was founded by a peace activist in 1970. The Ecology Flag has become a symbol of Earth Day and can be found on t-shirts, mugs and buttons.

The 1970 Earth Day Flag was created by artist and cartoonist Ron Cobb in 1969. The 1970 Ecology Flag was created as a result of the environmental movement of the sixties and is gaining popularity today.

View more personalized gifts from Zazzle.

The original Earth Day flag had a combination of the letters e and o, from the words environment and organism. This flag was also based on the Stars and Stripes of the United States Flag. The color green replaced the blue and red in the American flag.

Celebrate Earth Day by wearing a vintage Ecology Flag T-shirt, hat or tank top.