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 630: Things I Mean to Know Oct. 27, 2017 Act Three: The Sun Also Rises... Over There Among the things we tend to take for granted: The sun comes up and goes down like clockwork. 630: Things I Mean to Know Oct. 27, 2017 Act Four: Period Drama Remember learning that women’s menstrual cycles tend to sync up when they spend a lot of time together? Producer Diane Wu was skeptical. 617: Fermi’s Paradox May 19, 2017 Act One: I Think We’re Alone Now David’s story continues. More by David KestenbaumView all 641: The Walls Mar. 16, 2018 Act One: Just Another Kind of Outdoor Game There are two tiny Spanish towns on the African continent protected by multiple layers of razor wire, cameras and guards. 638: Rom-Com Feb. 9, 2018 Act Three: The Run David Kestenbaum retraces the steps of Steve Snyder, a man who found himself running for love. 635: Chip in My Brain Jan. 12, 2018 Act One: Believing A private basketball coach teaches a young student some things his parents don't agree with.