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 ...

Millions of people use sign language, but the methods of teaching this complex and subtle skill haven’t evolved as quickly as those for written and spoken languages. SLAIT School aims to change that ...

In a darkened room in Rochester, N.Y., a baby girl in a pink onesie peers at a computer screen. Wherever she looks, an eye tracker follows — recording her gaze patterns for future analysis. The baby, ...