Sarah Vowell tells "The Greatest Love Story of the 20th Century," Johnny Cash and June Carter Cash.

Host Ira Glass reminds the audience about the old TV series MacGyver, about the guy who stops bad guys without a gun. He uses science and sheer ingenuity to invent solutions.

Sarah Vowell tells the lost story behind a patriotic song, "The Battle Hymn of the Republic." An early version of the song celebrated an American terrorist. She's accompanied by Jon Langford and the band.

Sarah Vowell tells the story about the first time the United States attacked a country that hadn't attacked us first. It was also the first time the U.S. went to a foreign country to force a regime change.