The nonprofit Keep Durham Beautiful does exactly what their name implies in Durham, N.C. Trouble is, it are a small organization and it needed some help to make sure they were effectively tracking impact. They turned to a volunteer student group out of Duke University, the Duke Interdisciplinary Social Innovators (DISI) for help. The DISI team includes students from the Sanford School of Public Policy, Fuqua School of Business and the Pratt School of Engineering. DISI is a model of innovation and community service, and is entirely run by students.