Amy Kaufman

Amy Kaufman on her new book "Bachelor Nation: Inside the World of America's Favorite Guilty Pleasure."

The current No. 1 album in America is the work of an elfin youth barely old enough to shave. Today, we hear about the Justin Bieber juggernaut from Los Angeles Times staff writer Amy Kaufman. Then, we look at the history of teen idols in pop music with Howie Dorough ...