jane goodall

via Europa Pont / Flickr

Primatologist and anthropologist Dr. Jane Goodall, 86, has lived an incredible life that's been defined by her ability to bridge the gap between humans and the animal kingdom.

Most notably, her work studying chimpanzees up-close in the Gombe Stream National Park in Tanzania from 1960 to 1975 changed how people perceive what it is to be human and chimpanzee.

After documenting chimpanzees using tools in 1961, the discovery was so Earth-shattering it prompted her mentor, anthropologist, and paleontologist, Dr. Louis Leakey, to make the bold proclamation: "Now we must redefine tool, redefine Man, or accept chimpanzees as humans."

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