New languages can develop consistent rules of grammar within a single generation of their birth, a study of an Israeli sign language has shown. “We didn't expect to see word order so quickly.” Carol ...

Sign language is a language you express by using your hands and face instead of spoken words. It’s most commonly used by people in the Deaf community. How many types of sign language are there? There ...

Lydia Callis's "mesmerizing" work during Hurricane Sandy called attention to how facial and body movements are parts of grammar in the visual language. Callis was great, but not because she was so ...