Known around the world for her groundbreaking research on chimpanzees, conservationist Jane Goodall was among a number of noteworthy people who died in October.

Her immersive chimpanzee field research documented the primates’ personalities and use of tools. And she became a household name through appearances on television and in documentaries.

The month also saw the death of R&B singer D’Angelo. Best known for his shirtless performance in the music video “Untitled (How Does It Feel),” fans recognized him by his raspy yet smooth voice.

Other notable deaths in October included actor Diane Keaton, former Japanese Prime Minister Tomiichi Murayama, chess grandmaster Daniel Naroditsky, former Kenyan Prime Minister Raila Odinga, Kiss guitarist Ace Frehley, author Jilly Cooper and Nobel Prize-w

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