Terry Gross

Dr. Charles Gerba is an expert on germs and bacteria. As a microbiologist at the University of Arizona in Tucson , Gerba says to many people’s surprise it’s the kitchen not the bathroom that has the most germs and bacteria. Gerba talks about why germs and bacteria thrive in the kitchen. They colonize your sink and sponges and rags, and grow by the billions overnight.. In addition, Dr Gerba has done extensive research on public bathrooms and has found more bacteria in women’s washrooms than men's. (Interview by Barbara Bogaev)

Novelist Edmund White has just completed his semi-autobiographical trilogy. The new novel The Farewell Symphony (Knopf) focuses on gay life from the 1960’s to the present. His other books include A Boy’s Own Story,The Beautiful Room is Empty,Genet: A Biography, Forgetting Elena, Nocturnes for the King of Naples, States of Desire: Travels in Gay America, The Joy of Gay Sex, and Caracole.

Psychiatrist and author Peter Kramer. His book, "Listening to Prozac" was a bestseller. His new book is about relationships: "Should You Leave?: A Psychiatrist Explores Intimacy and Autonomy -and the Nature of Advice" (Scribner) Kramer is an associate clinical professor of psychiatry at Brown University and writes a monthly column for Psychiatric Times.

National Correspondent for the New York Times Rick Bragg. He's written a new memoir about growing up poor in Alabama, "All Over But the Shoutin'" (Pantheon Books).

He's known as the King of the Blues. B.B.(Blues Boy) King was born on a cotton plantation in Mississippi before moving to Memphis where he began his career. Since then, among numerous other awards, he's received seven Grammies, an MTV award, and a Presidential Medal of the Arts. He is also a member of the Rock-and-Roll Hall of Fame. In his biography, entitled "Blues All Around Me"(Avon Books, out in paperback now) he recounts his life from his early days in Mississippi, to breaking into the music business in Memphis, to his career today.

Sister Wendy Beckett is a member of the Notre Dame order, a teaching order of nuns and a celebrity. In 1980 she began the serious study of art, and since has written a number of books on the subject and hosted the popular PBS series "Sister Wendy's Odyssey" and "Sister Wendy's Grand Tour." This week PBS begins airing her newest 10-part series, "Sister Wendy's Story of Painting." There's a companion book (published by DK Publishing)

New York Times reporter Jason DeParle. In a recent New York Times Magazine cover story, DeParle wrote about Wisconsin's reformed welfare system. This week, that state enters a new phase in its efforts to shift welfare recipients into the workforce. Cash assistance ends. In exchange, the state plans to provide more opportunities to get a job.

Film maker Michael Uys. His latest project is Riding The Rails which he co-wrote, co-produced, and co-directed. The documentary film recounts the experiences of the more than 250 thousand teenagers who left their homes during The Great Depression and hopped on trains in search for a better life.

In this part of the show...Terry Gross talks with two people who as teenagers who left home and road trains during The Great Depression. Jim Mitchell and Peggy DeHart are both featured in Michael Uys' film Riding The Rails. Mitchell was 16 years old in 1933 when he first board a train. DeHart was 15 in 1938.