Talk of the Nation on WKNO HD-2

NPR's Neal Conan reads from listener comments on previous show topics, including the moment that changed your life, differences between identical twins, and a proposal for a new calendar.

Sites like PolitiFact and Factcheck.org are designed to verify political claims and hold politicians accountable. But critics say fact-checking entities are themselves biased. The Weekly Standard's Mark Hemingway and Glenn Kessler of the Washington Post discuss fact-checking in American politics.

Every year, film fans and studio executives travel to Park City, Utah, for the Sundance Film Festival, a showcase for independent films from around the world.

While feature films are always a draw at the festival, documentary fans closely follow the nonfiction films that premiere at Sundance each year.

The demonstrations that spread across the Middle East in 2011 unseated leaders in Tunisia, Egypt and Libya. Yemen's president has agreed to step down and violence continues in Syria. NPR foreign correspondents discuss developments since the Arab Spring and what they mean for the region and the U.S.