Charlie talks with PBS’ Ken Burns, award-winning documentary filmmaker, about his new film, “The Address”, where children with learning disabilities memorize the entire Gettysburg Address. Airing tonight, Tues., Apr. 15, at 8:00 PM (CT). To be repeated on Thurs., Apr. 17, at 2:00AM (CT), Sat., Apr. 19, at 4:00 PM (CT), and Sun., Apr. 27, at 10:00 PM (CT).