Well, the numbers are officially in for International Cleanup Weekend. When the dust settled, we looked at the map and found that cleanups were planned in 35 countries, involving over 3,000 participants in almost 300 cleanup projects. Now that's a lot of trash and a lot of cleaning up.

When we started crafting our plans, we expected to see cleanups in the 15 countries where the 'My Maps' tab in Google Maps is available. We were pleased -- and surprised -- to find cleanups in many more countries than that, and even one that took place underwater. Our thanks go out to the 41 environmental organizations around the world that joined the cause, and to the United Nations Environment Programme.

And our biggest thank you goes out to everyone who participated. We know that picking up trash isn't the most exciting thing to do with your weekend, but you can give yourself a pat on the back for helping to make a difference. Of course, we also hope that your efforts won't end with this project. Whether or not you organized a cleanup last weekend, we hope you'll consider making a map for another project that will make a difference close to home. Remember, changing the world starts with you.

Take a peek at some of our favorite cleanup projects from the weekend, all created within Google Maps: