Get Involved in International Cleanup Weekend
Google is proclaiming October 13 and 14 International Cleanup Weekend, with Google employees and people they've managed to strongarm into joining them heading out to parks, beaches, and other natural spots all over the world to pick up litter and other polluting trash.
To start your own cleanup project, Google suggests grabbing some friends and picking a spot first. Then, create a map (using Google maps, naturally) to organize your cleanup route. Submit your map to get added to the company's global cleanup map. And when you're done with your project, you can post photos and videos to your map for bragging rights. ::Google
Difficulty level: Moderate
See also: ::Book Review: 50 Ways to Save the Ocean