Terry Gross

Harrison is the widow of George Harrison, the former Beatle. The two were married for 24 years. Harrison died in December 2001. Before his death, he began working on his Dark Horse catalogue (1976-1992), his entire body of work, plus unreleased demos. The box set (on Capitol Records) includes six albums as well as a DVD of seven restored music videos. Just this week Harrison was inducted into the Rock and Roll Hall of Fame. Note: Audio for this feature is not available due to Internet rights issues.

In his new book, Disarming Iraq, Blix writes about what happened in the months leading up to the war in Iraq last year. Blix, formerly the head of the U.N. Monitoring, Verification and Inspection Commission, has been named chairman of the newly formed International Commission on Weapons of Mass Destruction, which began its work in January 2004.

With his book, The Elegant Universe, physicist Brian Greene developed a reputation for explaining complex scientific theories with insight and clarity. The book was the basis for a PBS series. His new book is The Fabric of the Cosmos: Space, Time, and the Texture of Reality. Greene is a professor of physics and mathematics at Columbia University. He received his undergraduate degree from Harvard and his doctorate from Oxford, where he was a Rhodes scholar.