Delta and Northwest Airlines have proposed a merger that would create the world's largest airline. Rising fuel prices and a sputtering economy are forcing the airlines to join forces. The new combined company would be called Delta; have a value of $17.7 billion and be based in Atlanta. To find out what the merger means for the industry and travelers, we speak to Micheline Maynard, business reporter for The New York Times.

Pope Benedict XVI arrives in Washington today. Jay Tolson, senior writer for U.S. News and World Report, previews the visit.

Texas child protection officials have moved 416 children to new locations, separating some from their mothers, ahead of a court hearing to determine if the children taken from a polygamist sect ranch should remain in state custody. We speak with Houston Chronicle reporter Terri Langford and George Washington University law professor Jonathan Turley.

With an increasing number of girls playing sports, physicians are reporting a huge increase in the girls who are getting injured. But it's not just a number's game. There appear to be physiological differences that put girls at greater risk of certain types of injuries, particularly those related to the knee and foot. We talk to syndicated health columnist Judy Foreman.

We speak with veteran music critic Bob Blumenthal, whose new book is "Jazz: An Introduction to the History and Legends Behind America's Music."