Jane Goodall , one of the world's most beloved primatologists and conservationists, passed away from natural causes while in California as part of a US speaking tour.

She is survived by her son, Hugo "Grub" Van Lawick Jr., and his children.

In a moving tribute, the Jane Goodall Institute describes her as "passionate about empowering young people to become involved in conservation and humanitarian projects."

"She led many educational initiatives focused on both wild and captive chimpanzees. She was always guided by her fascination with the mysteries of evolution, and her staunch belief in the fundamental need to respect all forms of life on Earth," the institute notes.

Goodall helped discover much of what we now know about chimpanzee ( Pan troglodytes ) behavior, which revoluti

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