Full episode 630: Things I Mean to Know Act Three The Sun Also Rises... Over There Share a clip BySelena Ross Among the things we tend to take for granted: The sun comes up and goes down like clockwork. Except when it doesn’t. Reporter Selena Ross tells the story. (11 minutes) More in ScienceView all 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. 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. Staff RecommendationsView all 355 May 9, 2008 The Giant Pool of Money The surprisingly entertaining story of how the U.S. got itself into a housing crisis. 355 May 9, 2008 The Giant Pool of Money The surprisingly entertaining story of how the U.S. got itself into a housing crisis.