The environmental advocate became a beloved household name who transcended generations through her appearances in documentaries and on television, as well as her travels to address packed auditoriums around the world.

The Jane Goodall Institute announced the primatologist's death Wednesday in an Instagram post. 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.