Yahoo News Friday launched a new initiative that meshes user-generated content with professional journalism. The program, "Talk to Power," calls on users to submit questions--by video or text--to U.S. politicians. CNN's Judy Woodruff then presents the questions to politicians. The launch show, dedicated to last year's Hurricane Katrina, featured Louisiana Sen. Mary Landrieu answering users' questions. Next week, Sen. John McCain will answer questions related to the five-year anniversary of Sept. 11, 2001.