Arizona

Our guest is the celebrated photographer David Halpern, who was based for many years here in Tulsa and now resides in Santa Fe. A wonderful exhibition of his work -- "The Essence of Place: Celebrating the Photography of David Halpern" -- will be on view at the Gilcrease Museum through the end of this year.

Lots of talk these days, as we all know, about "building that wall." But what about the borderwall that already exists between much of the U.S. and Mexico? And what about the cultures, events, art works, communities, and lives that are associated with this borderwall -- that is, with the various walls and fences running between these two countries? Our guest is Ronald Rael, an Associate Professor in the Departments of Architecture and Art Practice at the University of California, Berkeley.