Chantek, a 39-year-old male orangutan known around the world for his ability to use American Sign Language to communicate, has died at Zoo Atlanta. The zoo announced it was treating Chantek for ...

One of the classic things that people say makes humans special is, well, the language we use to say we're special. But new research suggests that some of our evolutionary cousins might b ...

Chiara De Gregorio does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...