After an illness during pregnancy deafened Doug and Naomi Foley’s baby, they got a call from a friend of the family who had a deaf and blind son. Her emphatic message: Learn American Sign Language.

Jenny was taught to sign as a baby, but she only learned the basic stuff — enough to get by. The Californian, who was born with auditory processing disorder and a right eardrum that doesn’t vibrate in ...

More than 70 million deaf or hard-of-hearing people globally use sign language, but there's an acute shortage of interpreters. Silence Speaks is a British startup that wants to bridge that gap with an ...