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 ...

Researchers have found two important building blocks of human speech in wild chimpanzees, one of our closest relatives. A pair of studies finds that chimp communication includes both rhythmic ...

This next story could not be introduced by a chimpanzee, unfortunately, but chimps do possess some of the building blocks of spoken language. NPR's Jon Hamilton reports on two new studies that hint at ...