Add Yahoo as a preferred source to see more of our stories on Google. Sixty years ago, scientists embarked on an experiment to teach American Sign Language to chimpanzees—and ultimately prove humans ...

ELLENSBURG, Wash. - A chimpanzee who could talk to people using American Sign Language has died at Central Washington University in Ellensburg. The university's Chimpanzee and Human Communication ...

ELLENSBURG — A park in downtown Ellensburg will be dedicated Saturday in memory of Washoe, the first chimpanzee to communicate with American Sign Language. Washoe came to Central Washington University ...

Washoe was 10 months old when her foster parents began teaching her to talk, and five months later they were already trumpeting her success. Not only had she learned words; she could also string them ...