Terry Gross

Volkmar is a leading researcher in Asperger's Syndrome, generally considered to be a form of autism characterized by deficits in social interaction and non-verbal communication. In the early 1990s, Volkmar led the team that helped develop the definition of autism used by the American Psychiatric Assoc. He is the Irving B. Harris Professor of Child Psychiatry, Pediatrics and Psychology at the Yale University Child Study Center.

Edwards, former host of NPR's Morning Edition, was reassigned just last week and is now a senior correspondent for NPR. He is the author of the new book Edward R. Murrow and the Birth of Broadcast Journalism. Edwards is also the author of Fridays with Red, about his radio friendship with legendary sportscaster Red Barber.

Her book Eats, Shoots & Leaves, a best seller in Britain, is a narrative history of punctuation. Truss claims that with the advent of e-mail and text messaging, proper punctuation is an endangered species. Truss is also the author of three novels and numerous radio comedy dramas. She has been a television critic and sports columnist for The Times (London). She also won Columnist of the Year award for her work for Women's Journal. She now reviews books for the Sunday Times of London.