Oct. 1 (UPI) -- Jane Goodall, the famous British primatologist and conservationist, died Wednesday at age 91.

The Jane Goodall Institute announced her death via Instagram, saying she died of natural causes and was in California as part of a speaking tour.

Her "discoveries as an ethologist revolutionized science, and she was a tireless advocate for the protection and restoration of our natural world," according to the institute.

Goodall was born in London, England, and grew up fascinated with animals.

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