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 ...

Humans are known to invent private hand gestures. Chimps in the wild do, too, a new study suggests. By Brandon Keim Parents and their children, or people who know each other well, often share some ...

SLRA copy 39088009263385 has bookplate: Smithsonian Institution Libraries, Gift in memory of Martin H. Moynihan, Founding Director of STRI. A Cross-Fostering Laboratory / R.A. Gardner -- Voiced and ...

Grunts, barks, screams and pants ring through Taï National Park in Cȏte d’Ivoire. Chimpanzees there combine these different calls like linguistic Legos to relay complex meanings when communicating, ...