Support WBURIf you donate DNA, what should scientists give in return? A 'pathbreaking' new modelPlay05:30Download AudioNurith AizenmanJanuary 22, 2024 ShareAnthropologist Carla Handley, center, meets with Wario Bala, right, to present the results of a DNA study she conducted seven years ago in his community in northern Kenya. (Rebecca Siford)