I accidently discovered this online forum for kids to help save the world, one person at a time. The event was a local celebration for kids who made a difference. Check out the international organization and then share it with teens you know.
We.org
Copied from their website:
WE empower people to change the world. WE make this change through our work at home, abroad and through our social enterprise.
Together WE Change the World.
Free The Children empowers international change. WE make this change through our holistic, sustainable international development model, Adopt a Village.
Free The Children is part of WE which empowers people to change the world. WE invite you to join a community of people who are making the world a better place.