from training.npr.org: https://training.npr.org/sources/bernard-powers/
Bernard Powers is the founding director of the College of Charleston’s Center for the Study of Slavery and a professor emeritus of history at the university. He’s an expert on African American history and culture and the role of slavery in American history.
Dr. Krutika Kuppalli is a medical officer with the World Health Organization in emerging diseases and zoonoses unit supporting COVID-19 health operations. She works with technical and clinical teams to help develop tools and guidance on treating COVID-19 patients.