How Neanderthals made the very first glue

How Neanderthals made the very first glue

The world’s oldest known glue was made by Neanderthals. But how did they make it 200,000 years ago? Leiden archaeologists have discovered three possible ways. Publication in Scientific Reports, 31 August.

A Neanderthal spear is predominantly made up of two parts, a piece of flint for the point, and a stick for the shaft. But one aspect is often overlooked, and has recently been puzzling archaeologists: the glue that fixes the point to the shaft. For this, Neanderthals used tar from birch bark, a material that researchers often assumed was complex and difficult to make.

Three methods

Leiden archaeologists have now shown that this assumption was unfounded. Led by Paul Kozowyk and Geeske Langejans, the researchers discovered no fewer than three different ways to extract tar from birch bark. For the simplest method, all that is needed is a roll of bark and an open fire. This enabled Neanderthals to produce the first glue as early as 200,000 years ago.

Experimental archaeology

The researchers made this surprising discovery by setting to work with only the tools and materials that Neanderthals possessed. They used experimental archaeology because the preservation of ancient adhesives is incredibly rare and there is no direct archaeological evidence about how tar was made during the Palaeolithic. In situations like this, experimental archaeology provides a window into the past that would not otherwise exist.

Temperature control

‘In earlier experimental attempts, researchers only managed to extract small quantities of tar from birch bark, or they didn’t get anything at all,’ says Kozowyk. ‘It was beleived that this was because the fire needed to be controlled to within a narrow temperature range. However, we discovered that there are more ways to produce tar, and that some work even with a significant temperature variation. So, precisely controlling the temperature of the fire is not as important as was initially thought.’

From simple to complex

Kozowyk and his colleagues show that Neanderthals discovered tar production by combining existing knowledge and materials. Neandertals may have started with a simple method that required only fire and birch bark, and later adopted a more complex method to obtain higher yields of tar.


One thought on “How Neanderthals made the very first glue”

  1. Dear Jesus, please be with my incredibly narrow view on your life, teachings, and how they relate to everything else the vast scope of humanity has to offer as a collective. As a pastor, it’s more business secure and profitable to preach within certain ramifications that can be accepted by an exclusive, culturally xenophobic congregation. Everyone else must be wrong or different in one way or another to make our evangelical narrative work, even on the numerous occasions that they come to the same conclusions as our teacher, Jesus. Also, we have to include contradictory old Testament teachings into our Jesus-themed discourses to justify the way we live our lives as modern industry Christians. If we were to admit the validity of other beliefs, we wouldn’t get paid to talk about Jesus. We must keep those dividing walls high. It’s just good business. And forget about the construction of the Bible as a document. What was left out, what made it in, how it is partially based on other culture’s myths and legends, or how it has been changed and manipulated over centuries…….. NO…. it must be perfect……. And superior to anything else, including the influences that inspired parts of it and predate it. Anyway, Neanderthals are clearly sons of Cain. Case closed. Repent .

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