There are a lot of unsolved problems in the world, and many folks with simple solutions that change the world in a big way. Do you know someone like that?

For example, a group in Congo is teaching villagers how to make easy-to-build, efficient stoves that help prevent deforestation. Check out some of the other stories we've seen and take a look at what's going on near you.

CNN is profiling folks who are committed to helping their neighborhoods and towns, as well as the global community around them, by doing small things that make a big difference. We want you to join us in this storytelling effort.

Find your subject, grab your video camera and interview the person you know who is changing the world. If that's not possible, share photos and videos of what they've done. Share a story of someone changing the world and you could be on CNN.