Isabel Wilkerson won the Pulitzer Prize for her work as Chicago Bureau Chief of “The New York Times” and was awarded the National Humanities Medal by President Obama in 2016. Her book “The Warmth of Other Suns: The Epic Story of America’s Great Migration,” won the National Book Critics Circle Award for Nonfiction. This interview is edited and produced with music and other features in the On Being episode “Isabel Wilkerson — The Heart Is The Last Frontier.” Find more at onbeing.org.