Can primates learn human language? One of the most famous animal language experiments involves Koko, a female western lowland gorilla who learned modified American Sign Language (ASL).

Barbie, using sign language, was in every store 20 years ago,” he said. “And tonight we celebrate a similar landmark: Children all across the country will be able to tune into the ASL version ...

With "Barbie" in ASL, its translator hopes "it sends the message that Deaf people and sign language have a place in the world." ...