14:06Newshour09/05/2024 13:06 GMT: Pioneering gene therapy restores baby's hearingBBC World Service Duration: 50 minutes Thu 9th May 2024, 14:06 on BBC World ServiceAvailable for 5 monthsListen nowEighteen-month-old Opal can now hear sounds as soft as a whisper. Show more GenresNewsFormatsMagazines & ReviewsBrandNewshour Source: BBC Online