Terry Gross

While The Washington Post's bureau chief in West Africa in 2001, Douglas Farah discovered al-Qaeda's diamond smuggling operations there. His coverage for the Post angered his hosts in West Africa and embarrassed U.S. intelligence officials. Forced to leave Africa and to defend his findings back in the United States, Farah continued his investigation. He's just published a book, Blood from Stones: The Secret Financial Network of Terror, that details his findings.

Producer Raney Aronson is the producer, writer and director of the new PBS Frontline documentary, The Jesus Factor (April 29, at 9 p.m. on many stations). It examines President Bush's evangelical Christian faith, how he became a born-again Christian and the impact it has on his politics. Also, Wayne Slater, Austin bureau chief of The Dallas Morning News. He's followed Bush's political career, and appears in the documentary. He is also the author of the book, Bush's Brain: How Karl Rove Made George W. Bush President.

Land is president of the Southern Baptist Convention’s Ethics and Religious Liberty Commission. He and President Bush share the same evangelical faith.