*Real estate agent Diane Olson opens the sliding glass door of a model home in Gilbert, Ariz. "[Phoenix] was one of the hardest hit cities in the collapse, and prices are still more than 50 percent below their June…

Treasury employee Linda Tarkenton of Philadelphia holds a blank U.S. Treasury check before it’s run through a printer at the U.S. Treasury printing facility. Photo by William Thomas Cain/Getty Images. Update: | Laurence Kotlikoff has agreed to answer your questions…

A TSA agent instructs travelers on traveling through security lines at Pittsburgh International Airport. Photo by Jeff Swensen/Getty Images. Paul Solman frequently answers questions from the NewsHour audience on business and economic news here on his Making Sen$e…