India, Oct. 4 -- Dr. Jane Goodall, one of the world's most recognized conservationists and the leading voice on chimpanzee research, has died at 91. Her passing was confirmed by the Jane Goodall Institute on Wednesday, October 1. The post said Goodall died of natural causes while in California, where she was on a speaking tour.

Goodall's groundbreaking work began in 1960. She arrived in Tanzania's Gombe Stream National Park to study wild chimpanzees. What followed was more than six decades of research that changed how the world views animals and their connection to humans.

Dr. Jane was married twice in her lifetime, first to Baron Hugo van Lawick and later to Derek Bryceson. Both of them became part of her story at Gombe.

Goodall met w...