Acclaimed chimpanzee expert and conservationist Dame Jane Goodall, who revolutionised the world’s understanding of animal behaviour, has died aged 91. The much-loved zoologist, primatologist and anthropologist championed chimpanzee protection for more than six decades, also becoming a tireless advocate of the wider natural world and the environment. As well as establishing the Jane Goodall Institutes to promote wildlife and environment conservation, she founded an environmental and humanitarian programme called Roots & Shoots, wrote books on chimps and conservation, and became the subject of more than 40 films and documentaries.