An illustration of scientist signing the word science The American Sign Language sign for ‘science’ is two closed fists with thumbs angled down, and each hand moves in small circles in opposite ...

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 ...

Unless you're hard of hearing, or have hearing-impaired friends or relatives, you probably won't understand sign language, which is frustrating for those who rely on it to communicate. Now engineers ...