Terry Gross

Edward Tenner is author of "Why Things Bite Back" from Knopf. It's about the unintended effects that new technological breakthroughs bring. Tenner is also a researcher at Princeton University in the Department of Geological and Geophysical Sciences.

Posner has just written a biography about the founder of the Reform Party, Ross Perot, called "Citizen Perot: His Life & Times." This month, the party will hold two conventions to decide who will be their candidate for President. Perot is expected to win the nomination. Posner's book is the result of two years of research--including exclusive access to Perot himself. It explores how Perot made his billions, influenced Presidents, rescued his employees from Iran, and much more about the life of this eccentric and controversial business man and politician.

Doctor Marcus Conant. He talks to Terry about new drug therapies for AIDS patients. In the early 1980's DR. Conant was among the first doctors in San Francisco to treat AIDS cases. Now Dr. Conant heads the largest private AIDS medical practice in San Francisco. After his 1985 study on how condoms block transmission of the AIDS virus, condoms became a household word.