General David Petraeus and U.S. Ambassador to Iraq Ryan Crocker returned to Capitol Hill this morning to face more lawmakers demanding answers about Iraq policy.

On the sixth anniversary of the attacks on the World Trade Center, we talk with Columbia University journalism professor and author Todd Gitlin.

We get an architect's eye-view on Ground Zero from Philip Nobel, author of "Sixteen Acres: Architecture and the Outrageous Struggle for the Future of Ground Zero."

Trial of the legendary music producer enters its final phase.

James Isaacs brings us the "new" old music of Charles Mingus.