Terry Gross

Writer and housecleaner Louise Rafkin. Her articles have appeared in "The New York Times," "The Utne Reader," and "Los Angeles Times." Her new book about cleaning is "Other People's Dirt: A Housecleaner's Curious Adventures" (Algonquin Books of Chapel Hill).

Greene is Curator of Herpetology in the Museum of Vertebrate Zoology and Professor of Integrative Biology at the University of California. He wrote (with photographs) "Snakes: The Evolution of Mystery in Nature." (University of California Press) (REBROADCAST from 7/23/97)

Merrill was one of the most acclaimed jazz stars of the 50s when she left America for Italy and then Japan. Early in her career she worked with arranger Gil Evans. She also worked with musicians Bill Evans, Clifford Brown, Ron Carter, and Wayne Shorter. Over the years she's recorded few albums compared with other singers. Her newest is "You And the Night and the Music" (Verve). (REBROADCAST from 5/26/88)

Simmons portrays a neo-Nazi in the graphic and disturbing drama of life in a maximum security prison. The show is produced by Tom Fontana, who also wrote and produced "Homicide: Life on the Street." "Oz" just launched its second season earlier this month. Simmons' film credits include "The Jackal" and "Extreme Measures." His TV credits include: "Law and Order," "Homicide" and "Spin City."

Keegan is known for his readable and comprehensive books about warfare including "The Face of Battle," (1976) and "The History of Warfare" (1993) which were both best-sellers. Recently he was series consultant to "War and Civilization" an eight-part documentary series (on the TLC cable network) which covers the past 5,000 years of conflict, beginning with ancient Greece. The series is narrated by Walter Cronkite.

Evan Imber-Black is a family therapist who has written the new book "The Secret Life of Families: Truth Telling, privacy and reconciliation in a tell all society." (Bantam) She makes the distinction about what is a private matter and what is a secret. She is the director of program development at the Ackerman Institute for the Family in New York City and a professor of psychiatry at the Albert Einstein College of Medicine.

After over 30 years in the business, Dara he's just released his first solo album, "Olu Dara: In the World: From Natchez to New York" (Atlantic). During the 70s and 80s Dara played in Art Blakey's band, as well as that of advante gardist Henry Threadgill and others. His new CD blends the two worlds and the two sounds that influenced him most: his hometown of Natchez, Mississippi and New York City where he lives now.

Former inmate Leotis Jones. He participated in the experiments and later led the fight to end the testing program by testifying at the U.S. Senate hearings that resulted in the banning of such experiments.

Dermatologist Bernard Ackerman, Professor of Dermatology and Path Director of the Institute for Dermatophathology at Jefferson College. He participated in the testing done at Holmesburg Prison.

Dermatologist Richards Tannen and current Vice Dean for Research and Research Training at the University of Pennsylvania Health System discusses their current research and testing guidelines.