Primatologist Jane Goodall dies at 91

British primatologist Jane Goodall, who transformed the study of chimpanzees and became one of the world’s most revered wildlife advocates, has died at the age of 91, her institute announced on Wednesday.

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Goodall “died peacefully in her sleep while in Los Angeles” on a speaking tour of the US, the Jane Goodall Institute said ina statement on Instagram.

In a final video posted before her death, Goodall, clad in her trademark green, told an audience: “Some of us could say ‘Bonjour’ some of us could say ‘Guten Morgen’ and so on, but I can say, ‘Hoo-hoo-hoo-hoo-hoo-hoo-hoo! That's ‘good morning’ in chimpanzee”

Tributes poured in from conservationists, politicians and entertainers.

“I'm deeply saddened to learn about the passing of Jane Goodall, our dear Messenger of Peace,” said UN chief Antonio Guterres. “She is leaving an extraordinary legacy for humanity & our planet”