Full episode 630: Things I Mean to Know Prologue Share a clip ByDavid KestenbaumDiane Wu Guest host David Kestenbaum talks to producer Diane Wu about a list she keeps of things she means to know. Sweet potatoes vs. yams. Are they different? The same? What exactly is going on there? (8 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 David KestenbaumView all 727: Boulder v. Hill Dec. 18, 2020 Act Two: The Other Extinguishers For years one group of people has been trying to push a giant boulder to the top of a hill, like Sisyphus. 715: Long-Awaited Asteroid Finally Hits Earth Aug. 28, 2020 Act Three: Future Imperfect David Kestenbaum talks to one teacher there who’s already gone through a month of in-person learning to see what the future might hold for other schools. 691: Gardens of Branching Paths Jan. 10, 2020 Act Two: Sorry/Not Sorry David Kestenbaum finds out about a speech that, in another world, President Clinton gave on August 17, 1998.