Four of the 2010 duPont-Columbia Awards announced this morning went to public broadcasting news programs, including investigative reports by American RadioWorks and Frontline/World. NPR News received a silver baton for “The York Project,” a series of conversations with voters about the role of race in the 2008 election. P.O.V., a PBS series showcasing independent film, won for The Judge and the General, a documentary about the prosecution of human rights violations in Chile. The first-ever duPont Award for a Web-based production was presented to MediaStorm and photojournalist Jonathan Torgovnik for a multimedia presentation about Rwandan children born of rape. Awardees, recognized for excellence in U.S. broadcast news that aired between July 1, 2008 and June 30, 2009, will receive their silver batons Jan. 21 during a ceremony at Columbia University in New York. Details about all of the 2010 winners are here. UPDATE: American Public Media has released an updated version of its duPont-winning American RadioWorks documentary, “What Killed Sergeant Gray,” and is offering it for broadcast on public radio stations starting Jan. 22.