Susanna Zaraysky, speaker of nine languages, is one of those people who seem able to pick up French or Portuguese almost overnight. In reality, it's not so effortless—but is she cognitively predisposed to attaining fluency in so many languages? We follow her to an MIT lab where researchers put her through a series of tests.

Photo by Patrick Cox. Music by Silver Maple, Lucention, Pause For Concern, Podington Bear and Blue Dot Sessions. Read a transcript of this episode here.

Stereotypes about Mormon missionaries tend to overshadow their great success in foreign language learning. Why is the Church of Jesus Christ of Latter-day Saints so skilled at teaching languages? We hear from missionaries, teachers and scholars, in Utah and Finland.

Photo by Kavita Pillay. Music by Blue Dot Sessions, Booker and the Yeomans and Podington Bear. Read a transcript of this episode here.

There's a new language class on offer at Harvard. Gullah Geechee is a creole language developed by enslaved Africans and still spoken today. As far as anyone knows, it's the first time it's been taught anywhere. Sunn M'Cheaux — native speaker turned Harvard instructor — tells his story and the story of Gullah Geechee, a language that is as African as it is American.

Music by Blue Dot Sessions, Podington Bear and Ranky Tanky. Photo courtesy Sunn M'Cheaux. Read a transcript of this episode here.