PBS and ABC News were among the top winners at the duPont-Columbia Awards, some of the top honors accorded each year to audio and video reporting done in the public interest. The 15 award winners of 2024 were announced Thursday during a special ceremony. The awards have been administered since 1968 by Columbia University’s Graduate School of Journalism. PBS won three duPont-Columbia Awards: one for courageous reporting from Ukraine in “20 Days in Mariupol”; one from Afghanistan in “Afghanistan Undercover” — both in documentaries produced by FRONTLINE, and a thirdfor Ken Burns’ six-hour series “The U.S. and the Holocaust” (Florentine...