Jane Goodall, the famed conservationist known for her expertise on chimpanzees and her globe-spanning advocacy of environmental causes, has died.

Goodall, a UN Messenger of Peace and Founder of the Jane Goodall Institute, was 91.

The Jane Goodall Institute confirmed the news on Instagram .

What we know:

The organization said she died of natural causes in California while on a speaking tour across the U.S.

What they're saying:

"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.

This is a developing story. Check back for updates.

The Source: This report includes information from the Jane Goodall Institute. Education Entertainment

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