More than 55,000 people in the U.S. are serving life sentences without the possibility of parole, according to research from The Sentencing Project. Behind bars, they are largely unseen and unheard.The Visiting Room Project is an effort to change that. It's a collection of first-person testimonials of people who are serving life sentences.We hear inmates tell their stories and talk with Calvin Duncan, co-creator the project, which invites the public to sit face-to-face with people who have no chance of parole.In participating regions, you'll also hear a local news segment to help you make sense of what's going on in your community.Email us at considerthis@npr.org.