We were already using fire 800,000 years earlier than we thought

He dominion of fire isWithout a doubt, the greatest turning point in the technological and evolutionary history of our lineage. It gave us warmth, it scared away predators and, by allowing us to cook food, it triggered the development of our brains and also our own lives. Until now, the scientific consensus placed the strongest evidence of its early use at around one million years, although this is no longer the case.

A new study. a new study published in PLOS ONE takes us to Wonderwerk Cave, in the northern Cape province of South Africa. This site was already “old acquaintance” for paleoanthropologists, since in 2012 a team demonstrated the existence of fire on site in layer 10 of the cave, dated to approximately one million years. And this is important because from here the consensus was created about when humans discovered fire.

But the story didn’t end there. The new study has descended one more step in time, specifically to layer 11 of the same cave and there they have found burned bones with an age that ranges between 1.07 and 1.79 million years.

And it is vital. The location of the remains is vital, since they were found 30 meters deep inside the cavern. This completely rules out that the fire marks are the product of a random forest fire or a lightning strike, but rather that someone had to carry those flames there after learning to control the fire.

A new debate. The evidence that suggests that our past knew how to make fire is much later, since in sites such as Gesher Benot Ya’aqov In Israel, total control of technology is already shown. What this new finding raises is whether these Homo erectus early people did not know how to light a fire from scratch.

What is proposed is that instead they were “thieves” of nature, since they took advantage of natural fires caused by lightning or volcanoes, collected the embers and transported them inside the cave to keep them alive as long as possible. A technique that, although it seems simple, entails great cognitive and social complexity.

The technology. If the fire in layer 11 had not been confirmed until now, it is because it is incredibly difficult to distinguish a bone burned almost two million years ago from a fossilized bone that has undergone chemical alterations. And it is no wonder, since with the passage of millennia, diagenetic processes such as fluoridation or the accumulation of manganese can darken the fossils, giving them a false appearance of having been carbonized.

But now we have very important tools, such as luminescence techniques combined with Fourier transform infrared spectroscopy, which allow us to reveal chemical secrets at the molecular level.

A new paradigm. The experts who have given their opinion on this study through the Science Media Center Spain such as Joaquín Panera or researchers specialized in fire such as Aitor Burguet-Coca agree in describing the methodological protocol as “innovative”, highlighting that it opens the door to reevaluate huge collections of fossils in other sites, such as Koobi Fora in Kenya, where there are ambiguous signs of fire 1.5 million years ago.

In Xataka | We had always believed that evolution had been arrested for thousands of years. The redheads were telling us the opposite