Breakthrough: Deaf Boy Can Hear After First Gene Treatment in US <img width="600" height="243" src="https://www.sciencealert.com/images/2022-05/processed/ListeningEar_600.jpg" alt="hand on ear"/> "Literally hearing sound for the first time in his life." https://www.sciencealert.com/breakthrough-deaf-boy-can-hear-after-first-gene-treatment-in-us