Koko Is Gone

The gorilla who showed her skills in understanding language is dead. She was 46 -- and almost made it to her 47th birthday, on the Fourth of July.

Koko used objects and sign language -- more than a thousand signs -- to express herself. She learned to understand more than 2,000 English words...and play the recorder.

In the process, she made many friends and admirers, including Robin Williams.

Sleep well, Koko.