I’ve never lived in a world that didn’t have Jane Goodall in it. But she passed away on October 1, at age 91, while on a worldwide tour to promote environmental protection and to urge all of us to fight climate change and protect the planet. So now we must carry on without her, it seems. As I write this, Trump declares he will open the Arctic National Wildlife Refuge, a crown jewel of US wildlife habitat, to oil and gas drilling, and Alaska native villages are being decimated by climate-fueled storms and flooding. I wish Jane were here.

Jane Goodall and Friend

Most of us know the early story of Jane Goodall, the young Englishwoman from a working-class family who was hired by famous anthropologist Louis Leakey to assist in his primate studies in Gombe, Tanzania. She had no college degree (the doctorate would come later). Leakey thought – rightly – that she was free of academic prejudices that could interfere with her observational studies. Jane went to Gombe in 1960, and her studies proved to be groundbreaking. National Geographic sent photographer Hugo Van Lawick to Gombe to capture the daily lives of Jane and the Gombe troop. Those photos captivated the world.

Jane discovered that chimpanzees used tools, a behavior that until then was thought to be exclusive to Homo sapiens. She closely observed the chimpanzee family interactions and social structures. She realized that individual chimpanzees had different personalities. Of course, evidence that chimpanzees aren’t so different from the scientists who studied them was uncomfortable for some.

Critics attempted to discredit her because she was a woman who lacked academic pedigrees, and they dismissed her observations as anthropomorphic. (In the early years of animal behavior science, this was a catch-all criticism of any study that challenged conventional wisdom about nonhuman animals.)

Jane continued to study primates in the field, returning frequently to Gombe. She led a new generation of scientists whose work revealed complexities of thought and behavior in nonhuman animals, expanding our previous understanding of them. She was a scientist and more than anything she loved being in the field, studying the natural world.

But Jane felt a deeper obligation to protect that world and its inhabitants. Starting in 1986, she traveled worldwide to raise awareness about human created harms and to urge that we act to protect the planet. She founded Roots and Shoots in 1991, a global humanitarian and environmental program that engages young people throughout the world to bring about positive changes.

With her deep commitment to nonhuman rights, Jane was an early board member of the Nonhuman Rights Project, and provided important supporting material for NhRP’s litigation, including a recent hearing in September on behalf of captive chimpanzees. She was a UN Humanitarian Messenger, and right up until her death, she was on the road 300 days a year, raising awareness – and hope.

So here we are today. In The Book of Hope, she wrote that “Hope is often misunderstood. People tend to think that it is simply passive wishful thinking…This is indeed the opposite of real hope, which requires action and engagement. Many people understand the dire state of the planet – but do nothing about it because they feel helpless and hopeless.” In September, during her last tour, she offered this: “Every single day we live, we make some sort of impact on the world…I tell people, find something you can do in your community. Do it. Get your friends to support you. See that you can make a difference. Know that all around the world, other people like you are making a difference.”

Thank you, Jane. As we confront so many threats to our planet and all life on earth, she is still here, giving me hope.