The world was struck with grief once again when the beloved gorilla, Koko, passed away at the age of 46. Koko's ability to use sign ...

Koko, the gorilla who mastered sign language and became a pop-culture phenomenon, will be laid to rest Saturday in a ceremony at an animal...

When a celebrity passes away, fans around the world take to social media to share their condolences and their favorite songs, movies, or e...

When Kim Silva, retired teacher from the American School for the Deaf, decided to start teaching sign language to her cats, she had no ide...