Temple University Hospital is trying to slow the rate of street killings by helping teenagers understand the realities of gun violence. In a paper on the program, Cradle to Grave, Amy Goldberg, the hospital’s chief of trauma and surgical critical care, said students’ inclination toward violence decreased after participating, especially among those who had an “aggressive response to shame.” “These results suggest that hospitals offer a unique opportunity to address the public health crisis posed by inner-city firearm violence,” the study said.