How Did Homo Habilis, “the Handy Humans”, Survive for Roughly 1 Million Years, And Why Did They Eventually Go Extinct? — Here’s What Scientists Believe

The modern human species, Homo sapiens, is a member of a genus called Homo. It encompasses every species that is considered “humans”, which means that it includes us and our extinct relatives like Neanderthals and Denisovans. One of the earliest members of this genus is believed to be Homo habilis.

They were estimated to have existed in Africa around 2.5 million years ago. Although they are now extinct, they were a relatively successful species that lived for roughly 1 million years. However, how exactly did Homo habilis survive for that long, and why did they eventually perish? Let’s explore these ideas and questions.

Who Were the Handy Humans?

The Homo habilis is one of the earliest known members of the genus Homo, and is one of the species that are considered and debated to be the first humans. The name Homo habilis is a Latin phrase that directly translates to handy human, mostly named after it because they were thought to be one of the earliest humans to use stone tools.

The first fossils of Homo habilis were discovered in the early 1960s at Olduvai Gorge in Tanzania by paleoanthropologists Louis and Mary Leakey. These are species that are believed to be transitional, which means that they are thought to bridge the gap between a more ape-like species, Australopithecines, and later, more advanced human species.

They are estimated to be smaller than us, modern humans. Standing at only about 3.5 to 4.5 feet tall. However, their brains, which are also smaller than ours, were bigger than those of earlier human ancestors before them. This might explain why they had developed a more complex behavior.

Compared to Homo sapiens, their jaws are longer and their teeth are larger. Even though they are still very different than us or even some of the later human species, they were still taking some of the very first significant steps that paved the way to being a human.

Read more: Australian Museum

How Did Homo Habilis Survive for So Long?

Homo Habilis - Ancient Human

So, how did the Homo habilis species survive for roughly 1 million years, from around 2.5 million to 1.4 million years? Scientists believe their long existence was primarily because of their use of stone tools, known as the Oldowan industry. In simple words, these are stone tools that were created by striking rocks together to create sharp edges.

Using these sharper stones, they were able to cut meat and process plants. These tools were necessary for their evolution and development as a species because they fundamentally changed their diets. The stone tools allowed for a wider range of food sources, which meant they had more nutrition and more energy to allocate to their growing brains.

These tools were also used to defend themselves against larger predators or carnivorous animals like big cats. But another key to their survival was their sociability. They likely lived in groups and worked together to obtain resources, hunt for food, and raise the young.

What Challenges Did They Face?

Although Homo habilis was able to survive for roughly 1 million years, their existence was not easy. They faced several challenges that affected their population and lifespan. First, there was the existence of bigger predatory animals that may look at them as a good source of food.

These include saber-toothed cats, leopards, giant hyenas, and large predators that hunted the same prey. The carnivorous animals during this time were stronger and bigger than the hominin’s body. This means that to stay alive, they needed to work together and outnumber these predators, and also hone their use of tools to defend themselves.

Another hardship they faced was human competition, because after a few hundred thousand years of their existence, a new human species, Homo erectus, arrived. They had larger brains, stronger bodies, and more advanced tools that made them a very dangerous and difficult competition for Homo habilis.

Climate change during their time was also a big challenge, as the environment in Africa shifted between wet and dry periods. They needed to constantly move whenever a habitat had its food and water sources depleted or disappeared.

Read more: Smithsonian

Why Did Homo Habilis Go Extinct?

Homo Habilis: The First 'Humans' | Prehistoric Humans Documentary

Homo habilis went extinct around 1.4 million years ago because of the reasons mentioned above. One of the most significant events was the arrival of a new human species, which has competed with them for the same resources and territories. Homo erectus was smarter and had a bigger brain.

They were able to outcompete Homo habilis as they traveled farther, hunted more efficiently, and developed advanced stone tools. It could be that they likely pushed out the Homo habilis groups out of the environments that are habitable and give the highest chance of survival for a human species.

The environmental shifts from climate change also contributed to their extinction. With fewer food sources and habitable areas, they struggled to handle the challenges of changing landscapes. Some scientists also think they could have mixed and interbred with other hominins, and instead of being wiped out, they may have been absorbed into the other human species.

Author's Final Thoughts

Homo habilis, the “handy humans,” is a crucial piece in the long history of the human species. They are some of the very first ones that are considered to be humans, along with a few other hominins. However, they may have faced too great a challenge to be able to survive longer.

But, relatively, they were still very successful as a species, as they existed more than twice as long as the current modern human species Homo sapiens, who have only lived for an estimated 200,000 to 300,000 years. They were pioneers of early tool use and problem-solving. Without them and their innovative survival strategies, later humans, which include us, may not have had the foundation to build on.

Read next: Why Did Humans Begin Making Clothing Around 170,000 Years Ago, And What Happened to Our Fur If We Needed It? — Here’s What Scientists Suggest

References & Further Reading

Leakey, L. S. B., Tobias, P. V., & Napier, J. R. (1964). A new species of the genus Homo from Olduvai Gorge. Nature. https://doi.org/10.1038/202007a0

Antón, S. C., Potts, R., & Aiello, L. C. (2014). Evolution of early Homo: An integrated biological perspective. Science. https://doi.org/10.1126/science.1236828

Smithsonian National Museum of Natural History. (2023). Homo habilis – The handy man. https://humanorigins.si.edu/evidence/human-fossils/species/homo-habilis

Australian Museum. (2023). Homo habilis – Handy man. https://australian.museum/learn/science/human-evolution/homo-habilis/