Eight Forty-Eight hears excerpts of a speech Cook County State’s Attorney Anita Alvarez gave Thursday, in which she offered more details on the creation of a new unit called the Conviction Integrity Unit. WBEZ architecture critic Lee Bey explains a decision that could turn Chicago’s Pullman neighborhood into the city’s first national park. WBEZ theater critics Jonathan Abarbanel and Kelly Kleiman review Punk Rock, now onstage at the Griffin Theatre. And, Duncan McLean of The Lone Star Swing Band stops by to play a few songs from the National Theatre of Scotland production Long Gone Lonesome, which runs through Saturday at the Hideout.