The following was shared by Wallace J. Nichols via the CTURTLE listserve:
"As Earth Day approaches, I wanted to share a simple educational tool with you that I've found to be wonderfully useful and VERY fun.
About 2 years ago at a lecture in the New England Aquarium's IMAX theater I started sharing blue marbles with people whenever I gave public talks, as a way to make our ocean conservation message a little more "sticky" and as a way to encourage further conversation and sharing.
The basic idea is to give someone a blue marble as a token of gratitude for what they are doing for our planet. They pass their blue marble along to someone, and so on.
(I told you it was simple)
The stories and outcomes of this simple act have been quite amazing, including a blue marble riding in the Jamaican team's sled in the Alaskan Iditarod race and a blue marble headed to the bottom of the Mariana Trench with filmmaker James Cameron. The kids at the Rooftop School in San Francisco have sent their marbles all over the world in small origami boxes made of old maps. Thirteen year-old Ben shared blue marbles at his Bar Mitzvah, calling it an Ocean Mitzvah, starting a trend among his peers."