Columbia Journalism School has announced the 30 Finalists and winners of the 2024 Alfred I. duPont-Columbia University Awards, honoring outstanding public service audio and video reporting. David Muir of ABC News and Audie Cornish of CNN hosted Thursday’s ceremony at the Low Memorial Library on Columbia University’s campus. PBS won three duPont-Columbia Awards: one for courageous reporting from Ukraine in “20 Days in Mariupol,” one from Afghanistan in “Afghanistan Undercover,” and a third for Ken Burns’ six-hour series, “The U.S. and the Holocaust” (Florentine Films/WETA). ABC News took home two awards for environmental reporting and for ABC News Studios’ “Aftershock.”...