Andrew O’Hagan discusses his “proudly misspent youth” as well as his imaginative landscape and new novel, Mayflies; Gabriel Kahane shares work from his groundbreaking oratorio on homelessness; and NPR veteran Jacki Lyden reports as herself from the Heartland in this week’s episode, themed “Home.” Contributing artists: Joseph Keckler, The Oregon Symphony, Stevie Macleod, Phoebe Legere.