Terry Gross

With books like Stiff and Spook, Roach has built a reputation for making unpalatable subjects entertaining. In her new book, Gulp, she tackles the human digestive system, from the mouth on down. Along the way, she gets a sedation-free colonoscopy and goes on location for a fecal transplant.

Emmylou Harris and Rodney Crowell have been friends and collaborators since they first met in 1974. While they always wanted to make an album together, they never did until recently. Old Yellow Moon includes songs by Crowell, Patti Scialfa, Johnny Cash and Kris Kristofferson among others.

After hosting his Sunday morning show on MSNBC for the past year and a half, Hayes is making the move to a weeknight news show that premieres April 1. At 34, Hayes will be the youngest prime-time anchor on any of the major cable news channels.