Terry Gross

We learn about caves from journalist and caver Michael Ray Taylor. His new book is called Caves: Exploring Hidden Realms (National Geographic Society). He has written for the Discovery Channel Online, Audubon, Sports Illustrated, Reader's Digest, and many other magazines. He'll talk about the geology of underwater caves and ice caves, and the secret microbial life flourishing in caves.

Irish writer Nuala OFaolain. Her first novel, My Dream of You, (Riverhead Books) has just come out in paperback. Her critically acclaimed 1998 memoir, Are You Somebody? The Accidental Memoir of a Dublin Woman was on the New York Times bestseller list. OFaolain is also a columnist for the Irish Times; she has been at the paper for over 12 years.

Film critic Henry Sheehan reviews the new film "The Tailor of Panama," starring Pierce Brosnan and Geoffrey Rush.