Environmental conservationists, including actor Leonardo DiCaprio and representatives of Indigenous communities, gathered in the US capital Wednesday to pay a heartfelt tribute to the celebrated primatologist Jane Goodall.

Goodall, who died in October at age 91, transformed the study of chimpanzees and over her decades-long career became one of the world's most revered wildlife advocates.

"May we all honor her by carrying forward that same fierce belief that we can do better, that we must do better and that we have a responsibility to protect this beautiful natural world we all share," DiCaprio said in his remarks at the Washington National Cathedral service.

Goodall could be clear-eyed and blunt "about the greed and relentless consumption of our species," the Hollywood star said of his

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