The Jane Goodall Institute said Goodall was on a speaking tour in California at the time of her death.
Jane Goodall, the world’s most famous primatologist, died Wednesday at the age of 91, the Jane Goodall Institute announced on social media.
According to the Institute, Dr. Goodall passed away “due to natural causes” while in California as part of a speaking tour of the United States.
“Dr. Goodall’s discoveries as an ethologist revolutionized science, and she was a tireless advocate for the protection and restoration of our natural world,” the Institute said in a statement.
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This article originally appeared on HuffPost.