Years after transatlantic slavery, DNA tests give clarity

Years after transatlantic slavery, DNA tests give clarity More

DNA ancestry tests in the last decade have helped some African-Americans reconcile with aspects of their identities that might have been obscured during the transatlantic slave trade. Alondra Nelson chronicles this journey in her book, "The Social Life of DNA: Race, Reparations and Reconciliation After the Genome." Nelson joins Hari Sreenivasan.

AIR DATE 12/31/16