Full episode 420: Neighborhood Watch Act Three Witness for the Poo-secution Transcript ByIra Glass Ira Glass tells the story of how science is being used to fight the ultimate neighborhood plague: Dog poop. (14 minutes) More in ScienceView all 689: Digging Up the Bones Dec. 6, 2019 Act Three: A Curious Bone David Kestenbaum tells the story of a man on the verge of one of the greatest scientific discoveries of all time … right on the verge. (4 minutes) 662: Where There Is a Will Nov. 16, 2018 Act Two: Life Is a Coin With One Side Producer David Kestenbaum took issue with the entire premise of today’s show, and explains why. 655: The Not-So-Great Unknown Aug. 24, 2018 Act One: So Over The Moon Producer David Kestenbaum tells the story of an astronaut who returns with a very unexpected view of the great beyond. More by Ira GlassView all 757: The Ghost in the Machine Dec. 31, 2021 Act Two: Father of Invention There’s a machine lots of us encounter as a big impersonal, mechanical apparatus, that has a ghost in it. 756: But I Did Everything Right Dec. 10, 2021 Act Two: Brian and Peg Brian and Peg disagree over a very important thing. 754: Spark Bird Nov. 26, 2021 Act One: Don’t Chicken Out Carmen Milito tells Ira the story of a date she went on as a teenager, and the bird her mom brought to the occasion.