A push follows a shove, and part of the group jostles to regain its footing. Someone cracks a joke and laughter is heard across the empty cafeteria. Alex, Mark, Balthazar, Allen and Adam are part of a group of high school guys who are loud, like to roughhouse, and constantly trying to make each other laugh. Despite their clear differences in age and personality, they’ve clearly built a solid friendship. How did such a diverse group of teens get so close? YU’s Tombert Chen says it’s what happens when youth invest in volunteering together. Richmond Area Director and Youth Worker,...