The Diane Rehm Show

Two experts on American English, Allan Metcalf, author of How We Talk (Houghton Mifflin) and Joseph Pickett, editor of the American Heritage Dictionary (Houghton Mifflin), join Diane to talk about regional dialects and how they're changing, new words entering our vocabulary, and everything else that sets the English spoken in the U.S. apart from the rest of the Anglophone world.