Chimpanzees and bonobos can communicate with greater flexibility using hand gestures than they can with facial expressions or vocalizations, new research shows. Their use of hand motions to convey ...

Millions of people communicate using sign language, but so far projects to capture its complex gestures and translate them to verbal speech have had limited success. A new advance in real-time hand ...

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 ...