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The analysis of charred residues at an archaeological site demonstrates that the mastery of fire for cooking and heating occurred much earlier than science had assumed.
The archaeological site of Gesher Benot Ya’aqov in Israel has become the setting for a fundamental discovery about human evolution.
Researchers identified fragments of charcoal that are 780,000 years old, proving that early hominins not only used fire sporadically but mastered techniques for controlling and maintaining it. A detailed analysis of the charred wood samples reveals a sophisticated understanding of which materials were most efficient for sustaining combustion over long periods.
The technological mastery of fire in the Pleistocene
The discovery is based on the identification of microfragments of charcoal strategically distributed throughout the site, indicating the existence of planned fire pits.
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The use of charcoal that is 780,000 years old demonstrates that human ancestors, possibly Homo erectus, had the cognitive ability to keep the fire burning for protection, warmth, and food processing. This skill represents a biological watershed, allowing the group to expand its activities beyond daylight hours and survive in colder climates.
Scientists observed that the choice of wood species was not random, evidencing a botanical knowledge applied to survival. The charcoal that is 780,000 years old found primarily comes from trees that produce long-lasting and stable flames, such as oak and ash.
This pattern of selection suggests that hominins already understood the combustion properties of different biomes, selecting fuels that ensured the safety of the camp during the night.
Impacts on diet and social evolution
The continuous presence of fire at the Gesher Benot Ya’aqov site is directly linked to the transition to cooking food, which facilitated digestion and nutrient absorption.
Fragments of charcoal that is 780,000 years old were found near remains of seeds and animal bones, reinforcing the theory that fire was at the center of social and dietary life. Cooking food reduced the energy expenditure required for chewing, allowing more energy to be directed toward the development of the human brain over generations.
In addition to nutrition, the fire pits served as the first major catalyst for complex social interaction among group members. The charcoal that is 780,000 years old marks the place where hominins gathered, promoting the transmission of knowledge and strengthening community bonds.
This organization around a source of light and heat is considered one of the pillars for the emergence of language and primitive human culture, transforming the hostile environment into a safe home.
Scientific methodology and analysis of microcharcoal
To confirm the antiquity and origin of the material, researchers used advanced techniques of spectroscopy and electron microscopy.
The study of 780,000-year-old charcoal required the analysis of thousands of microscopic particles to differentiate natural fires from campfires produced by human hands. The localized concentration of charred residues in specific layers of soil served as definitive proof that fire was intentionally and recurrently maintained at that location.
Research at Gesher Benot Ya’aqov also allowed for the reconstruction of the paleoenvironment of the region, showing a rich biodiversity ecosystem that offered abundant resources. The 780,000-year-old charcoal preserved in the sediments of the ancient Hula Lake provides a valuable climatic record of the Middle Pleistocene.
The success of this investigation redefines the chronology of human technology, moving the date of the definitive mastery of fire back by hundreds of thousands of years from what was previously estimated.
Click here to access the study.
