Aug 14, 2021
Chimps use 'hi' and 'bye' greetings, just like humans
Chimps and bonobos signal hello and goodbye to one another when entering and exiting social encounters, a new study finds. In other words, these apes, which share about 99% of humans' DNA, politely greet and bid adieu to each other, just like humans do. Until now, this behavior hasn't been...