American sign language (ASL) is a visual language using hand gestures, facial expressions, and body movements, primarily used by the Deaf community in North America.

What is sign language? Before we answer that question, it might be useful to first consider what a 'language' is.

We consider a new language invented by deaf children in Nicaragua, and how scientists are able to see the language evolving.

After Superstorm Sandy, New York City Mayor Michael Bloomberg's sign language interpreter became a pop culture phenomenon. Lydia Callis' energy and facial expressions drew wide attention and even ...

American Sign Language has a long history in the United States. It goes back almost 200 years, to 1817, when a minister named Thomas Hopkins Gallaudet brought Laurent Clerc, a teacher of the Deaf ...

Seattle Seahawks star DK Metcalf is as motivated in his ASL lessons as he is on the football field. We talked to his instructor.

British Sign Language is expanding so a new generation can discuss climate change and environmental issues.