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 ...

SPOKANE, Wash. Washoe, a female chimpanzee believed to be the first non-human to acquire human language, has died of natural causes at the research institute where she was kept. Washoe, who first ...

Washoe, a female chimpanzee said to be the first non-human to acquire human language, has died of natural causes at the research institute where she was kept. Washoe, who first learned a bit of ...

Forty years ago, I published an article, "Can a Chimpanzee Create a Sentence?" My answer was, definitively, "No." At the time, that conclusion was controversial. It was also headline news because ...