Jane Goodall, legendary primatologist, has died at age 91 : NPR:
In just a few months, Goodall a made a major discovery. Chimps could make and use tools — as she learned by watching a chimp she’d named David Greybeard. (Goodall has called him “my favorite chimpanzee of all time.”) He stripped leaves off a twig, then used it to fish termites out of a mound. Goodall later told NPR that her mentor, Louis Leakey, was impressed.
“He said, ‘Well, it’s always been considered that man is the only toolmaking animal. So we now have to redefine tool, redefine man, or include chimpanzees with humans,’ ” she recalled.