Level 1 — Absolute Beginner
Scientists study old bones. The bones are burned. They come from a cave in South Africa. The cave is called Wonderwerk Cave.
The cave is in the Kuruman Hills. It is near a town called Kuruman. The burned bones are deep inside the cave. A wildfire cannot go there.
This means people made the fire. The people were not modern humans. They were Homo erectus. Homo erectus lived a very long time ago.
Scientists used a new tool. The tool checks how old bones are. The bones are between 1.07 million and 1.79 million years old. This is very old fire use.
- scientists
- people who study the world to learn new facts
- burned
- damaged or changed by fire
- cave
- a large natural hole in rock, often underground
- deep
- far down or far inside
- wildfire
- a fire that starts and spreads on its own in nature
- ancestors
- people who lived a long time before us, from whom we descend
- tool
- a thing used to help do a job
- million
- the number 1,000,000
Level 2 — Elementary
A new study, published in the journal PLOS One in June 2026, has changed what scientists know about early fire use. The study looked at Wonderwerk Cave, a cave site in the Kuruman Hills of South Africa, about 60 km south of the town of Kuruman.
Researchers found burned bones deep inside the cave. A natural wildfire could not have reached that spot. This strongly suggests that someone carried fire into the cave and kept it burning there.
To find out how old the fire use was, scientists used a new, non-invasive dating method. They studied burned bones that had been inside owl pellets, which are lumps that barn owls cough up. The bones were dated to between 1.07 million and 1.79 million years ago.
The people who likely used this fire were Homo erectus, an early human ancestor that lived long before modern humans, called Homo sapiens. Scientists think these early humans collected fire from nature and kept it going, rather than creating fire themselves.
- researchers
- people who carefully study a topic to find new information
- non-invasive
- not requiring cutting or damaging something to examine it
- dating method
- a scientific way of finding out how old something is
- owl pellets
- small lumps of bone and fur that owls cough up after eating
- hominin
- a member of the group that includes humans and their close ancestors
- site
- a specific place where something, such as research, happens
- maintained
- kept something going or in good condition over time
- controlled
- managed or directed something on purpose
Level 3 — Intermediate
A study published in the scientific journal PLOS One in June 2026 has significantly pushed back the timeline for when human ancestors first controlled fire. The research focused on Wonderwerk Cave, an archaeological site located in the Kuruman Hills of South Africa's Northern Cape Province, roughly 60 km south of the town of Kuruman.
The key evidence comes from burned bones discovered deep within the cave, in a location that natural wildfires could not have reached. This detail is crucial: it strongly suggests that fire was deliberately carried into the cave and maintained there by human ancestors, rather than being the result of a chance wildfire spreading in from outside.
To establish a reliable age for this fire use, researchers applied a new, non-invasive luminescence-based dating technique. Rather than analyzing the burned bones directly in a destructive way, they examined burned bones that had been recovered from owl pellets, the regurgitated remains left behind by barn owls, found within the same archaeological layers. This method dated the evidence of fire use to somewhere between 1.07 million and 1.79 million years ago.
The likely users of this fire were Homo erectus, an early hominin species that existed long before the emergence of Homo sapiens, or modern humans. The discovery pushes back one of the earliest known records of hominin fire use and offers valuable new clues about how early human ancestors first learned to exploit fire, not by inventing it, but by collecting and sustaining an existing fire encountered in the landscape.
- archaeological
- related to the scientific study of past human life through remains and artifacts
- deliberately
- done on purpose, intentionally
- luminescence-based
- relating to a dating method that measures light-related properties of a material to estimate its age
- regurgitated
- brought back up from the stomach after being swallowed
- layers
- distinct levels of material that build up over time, often studied to understand history
- emergence
- the process of coming into existence or becoming visible
- exploit
- to make full and effective use of something
- sustaining
- keeping something going or in existence over a period of time
Level 4 — Advanced
A study published in the scientific journal PLOS One in June 2026 has substantially revised the accepted timeline for when human ancestors first exercised control over fire, drawing on evidence from Wonderwerk Cave, an archaeological site nestled in the Kuruman Hills of South Africa's Northern Cape Province, some 60 km south of the town of Kuruman.
The pivotal evidence lies in burned bones recovered from deep within the cave interior, in a location that natural wildfires could not plausibly have reached. This spatial detail is decisive: it strongly implies that fire was deliberately transported into the cave and sustained there by human ancestors, rather than resulting from an incidental wildfire encroaching from the surrounding landscape.
In establishing a robust chronology, researchers employed a novel, non-invasive luminescence-based dating technique, applying it not to the burned bones directly but to specimens recovered from owl pellets, the regurgitated remains left by barn owls, found within the same archaeological strata. This approach yielded a date range of between 1.07 million and 1.79 million years ago for the evidence of fire use, a figure that considerably antedates many prior estimates.
The presumed agents behind this fire use are Homo erectus, an early hominin species that predates Homo sapiens, modern humans, by a considerable margin. The finding pushes back one of the earliest known records of hominin pyrotechnology and illuminates how early human ancestors likely first came to harness fire: not through the technological feat of ignition, but through the more modest, and no less consequential, practice of collecting and sustaining a fire already present in the landscape.
- nestled
- positioned snugly or securely within a particular setting
- pivotal
- of crucial importance in relation to the development of something
- plausibly
- in a way that seems reasonable or probable
- encroaching
- gradually intruding on or advancing into a territory or space
- chronology
- the arrangement or study of events in the order in which they occurred
- strata
- layers of material, especially rock or soil, distinguished from those above and below
- antedates
- comes before something else in time
- pyrotechnology
- the technology or practice of using and managing fire
Talk about this article with KatePractice this story's vocabulary in a real spoken conversation with your AI tutor