FILE – Jane Goodall kisses Tess, a female chimpanzee, at the Sweetwaters Chimpanzee Sanctuary near Nanyuki, north of Nairobi, on Dec. 6, 1997. (AP Photo/Jean-Marc Bouju, File)

Jane Goodall, the conservationist renowned for her groundbreaking chimpanzee field research and globe-spanning environmental advocacy, has died at 91.

The Jane Goodall Institute announced the primatologist’s death today. According to the Washington, D.C.-based institute, Goodall died of natural causes while in California on a U.S. speaking tour.

Her discoveries “revolutionized science, and she was a tireless advocate for the protection and restoration of our natural world,” it said.

While living among chimpanzees in Africa decades ago, Goodall documented the animals using tools and doing other activities previous

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