We speak to Richard Ben-Veniste, 9/11 Commission member, about Congressman Curt Weldon's claim that U.S. military intelligence knew that Mohammed Atta and three other 9/11 hijackers were in the U.S. a year before the attacks.

Four years after 9/11, where is the U.S. on readiness in the event of a bioterrorist attack? We speak to Dr Tara O'Toole of the University of Pittsburgh's Center for Biosecurity.

Is there any sense to daylight saving time? Bob Oakes speaks to Michael Downing, author of "Spring Forward: The Annual Madness of Daylight Saving Time."

Mark Zandi of Economy.com on interest rates, gas prices, and other pocketbook issues.

The Organ Historical Society held a convention in Massachusetts in a fight to save the pipe organ.