13-year-old Nathan Moss found inspiration via the Step-It-Up Conference in Salt Lake City, and the movie An Inconvenient Truth. Nathan started an innovative project, "The Anti-Idling Campaign," to help stop global warming and improve the air quality in his community. He and 18 other schoolmates started by holding up signs before and after school, telling parents and bus drivers to turn off their engines while they waited. The campaign has shifted people's habits. Nathan also took his campaign to the Utah state legislature and lobbied for a bill to prohibit buses from idling, and to make school districts adopt a policy regarding bus idling.