Long-term memories may have been vital to our own evolution, suggests a new study of chimpanzees and bonobos.
By Carl Zimmer for The NY Times
Published Dec. 18, 2023 Updated Dec. 19, 2023
In 2015, while working as an undergraduate researcher at the North Carolina Zoo, Laura Lewis
became friends with a male chimpanzee named Kendall. Whenever she visited the chimps, Kendall
would gently take her hands and inspect her fingernails.
Then she disappeared for the summer to study baboons in Africa. When she returned to North
Carolina, she wondered if Kendall would still remember her face. Sure enough, as soon as she stepped
into his enclosure, Kendall raced up and gestured to look at her hands.