"It’s 7 a.m., and the sun barely peeks from behind the clouds on a cold and rainy Chicago morning. The only bright spot is a herd of fluorescent sweatshirts inside a cube-shaped building that resembles a hybrid storage center and ballet studio. “Ain’t Too Proud to Beg” starts rattling the walls of the stark, white building, and 23 joyful Chicagoans are singing and preparing for another day of work."  Read on for one Columbia Chronicle reporter's view of what it means for our interns and our communities to be a part of Cleanslate.