A ‘talking’ ape’s death signals the end of an era
Kanzi the bonobo, who understood spoken English and could communicate symbolically, died this year

Kanzi the bonobo, shown here in 2006 with psychologist Sue Savage-Rumbaugh, used symbols on a board to communicate with humans.
WILLIAM H. CALVIN, PH.D./WIKIMEDIA COMMONS (CC BY-SA 4.0)