I never get tired of wearing my vintage 1970 booster button to commemorate the very first Earth Day. Back then, I had no idea what Earth Day was about, but one of the cutest boys in school gave me this button, and so I wore it on my t-shirt. I thought it might have something to do with protesting, since I wore protest buttons, too, but I knew as little about war then as I did about preserving the environment.
Time has changed my awareness, of course, and my 1970 Earth Day button means, quite literally, the world to me. Rock on, Earth Day!
For more information about the history of Earth Day visit: http://www.earthday.org/earth-day-history-movement