A recent study done by the PEW Research Center found that nearly 23 percent of people in the United States are unaffiliated with a religion. This hour, we'll take a closer look at how religious affiliation is changing in the US .

Guests:

Gregory Smith, associate director of research, PEW Research Center

Isaac Weiner, assistant professor of comparative studies at OSU

Linda Mercadante, theology professor at Methodist Theological School in Ohio, author of "Belief Without Borders: Inside the Minds of the Spiritual but not Religious"