Philadelphia has a plan to add 500 acres of green public space to the city by 2015, to make sure that every city resident is within easy walking distance of a local park. The Nutter administration hopes that the plan achieves a couple of objectives at once: improving life for Philadelphians, while also making use of vacant land and improving public safety, as well, among many other goals. Joining Marty in studio to talk about the plan is MICHAEL DiBERARDINIS, Philadelphia’s Parks and Recreation Commissioner and special adviser to the mayor for the Free Library. The goal is to provide park space for residents who don’t live within a half-mile of a park, and ultimately to make the city more equitable, livable, and competitive. We’ll also talk to DiBerardinis about his interesting and important career, which has seen him play a pivotal role in Philadelphia and Pennsylvania in parks, recreation, handguns and more.