1960 - Jane Goodall Discovers That Chimpanzees Are Tool-Makers

On November 4, 1960, at the Kasakela chimpanzee community in Gombe Stream National Park, Tanzania, a young researcher named Jane Goodall witnessed a chimpanzee modifying a blade of grass to fish for termites. This singular event, recorded in her field notes, provided the first scientific observation of non-human tool manufacture. The discovery effectively dismantled the academic consensus that defined humanity solely by the capacity to create tools, forcing a revolutionary rethink of the evolutionary divide between humans and our closest primate relatives.

How did a young woman find herself in the heart of Gombe?

Jane Goodall’s journey to the remote forests of Tanzania began with a fascination for animals that traced back to her childhood in England, where she was famously gifted a stuffed chimpanzee named Jubilee. Her professional trajectory shifted decisively when she sought the counsel of the renowned Kenyan archaeologist Louis Leakey. Leakey, who held the belief that the study of modern great apes could illuminate the behavior of early hominids, recognized a rare, observant spirit in the young secretary. With his support and the necessary presence of her mother, who satisfied the local warden's strict safety requirements, Jane Goodall arrived in Gombe in July 1960 to begin what would become the longest continuous study of wild animals in their natural habitat.

What exactly happened on that November day?

For months, the chimpanzees of the Kasakela community had remained wary of the newcomer, keeping their distance as Jane Goodall patiently observed them from afar. The breakthrough occurred on November 4, 1960, when Jane Goodall watched a chimpanzee carefully select a stalk of grass, strip it of its leaves, and insert it into a termite mound. By pulling the stalk back out, the chimpanzee revealed a feast of termites clinging to the stem—a calculated, deliberate act of object modification. This process was not merely an accidental discovery but a form of functional engineering that blurred the line between instinct and intellect.

We must now redefine man, redefine tool, or accept chimpanzees as human! — Louis Leakey

The impact of this observation was instantaneous and profound. Upon receiving word of her findings, Louis Leakey famously remarked that the scientific community must either redefine the concept of humanity and tools or accept chimpanzees into the human fold. Before this moment, the moniker "Man the Toolmaker" served as a rigid boundary, insulating humans from the rest of the animal kingdom. By demonstrating that chimps not only used objects but fashioned them for specific purposes, Jane Goodall challenged the traditional hierarchy of species and invited a more nuanced perspective on the complexity of animal cognition.

How did this research reshape our understanding of chimpanzees?

The research conducted by Jane Goodall at Gombe Stream National Park evolved far beyond initial expectations. Beyond the use of tools, she observed chimpanzees engaging in complex social dynamics that mirrored human behaviors, including kissing, hugging, and even organized warfare. In the mid-1970s, Jane Goodall documented the brutal four-year Gombe Chimpanzee War, a revelation that forced her to confront the darker, violent side of chimpanzee nature. This transition from viewing them as purely gentle creatures to acknowledging their capacity for aggression and organized conflict provided a more holistic, and at times unsettling, view of their species, confirming that many of the psychological traits once thought unique to humans existed elsewhere in the natural world.

Jane Goodall’s methodology was as unconventional as her findings. By choosing to name the chimpanzees rather than assigning them numbers—a practice that was standard in the biological sciences to maintain perceived objectivity—she fostered a deeper emotional connection with her subjects. This approach allowed her to recognize individual personalities, social matrilineal lines, and the longevity of their complex family bonds, which can span more than 50 years. Her subsequent work, including the founding of the Jane Goodall Institute and the global Roots & Shoots program, ensured that her legacy would extend beyond academia into active conservation and ethical advocacy.

Jane Goodall was only the eighth person permitted to pursue a PhD at the University of Cambridge without first obtaining a bachelor's degree.

The Gombe chimpanzees have been shown to consume as much as one-third of the local colobus monkey population annually through systematic, organized hunting.

Jane Goodall's first book, 'In the Shadow of Man', has been translated into 48 languages, helping to globalize the study of primate ethology.