Level 1 — Absolute Beginner
A long time ago, ancient people painted pictures on cave walls.
Scientists just found human DNA on some of these old cave walls.
This is the first time anyone has found DNA this way. They tested a famous cave in Spain called Altamira.
The DNA can help scientists learn about the people who made the cave paintings, without damaging the art.
- DNA
- the material inside our cells that carries information about who we are
- cave
- a large natural hole in the ground or in a mountain
- ancient
- from a very long time ago
- painting
- a picture made using paint or other colors
- scientist
- a person who studies the natural world
- sample
- a small part taken to be tested or studied
- damage
- harm done to something
- discover
- to find something for the first time
Level 2 — Elementary
An international team of scientists has shown for the first time that ancient human DNA can survive directly on the walls of prehistoric caves, including the famous hand stencils at Spain's Altamira cave.
The study, published in the journal Nature Communications, tested 54 samples taken from 24 different rock art panels across several caves.
Five of those samples came back positive for ancient human DNA, including one taken from a calcite-crusted red dot painted on the wall.
Researchers say this new method could let them study who made prehistoric cave art, including their biological sex and genetic ancestry, without having to dig into the ground or damage the paintings themselves.
- prehistoric
- from a time before written history began
- stencil
- a shape made by placing an object against a surface and applying paint around it
- journal
- a publication where scientists share their research findings
- rock art
- paintings or engravings made on natural rock surfaces
- calcite
- a mineral that can form a thin, hard crust on cave surfaces over time
- biological sex
- whether an individual is male or female, based on genetics and biology
- ancestry
- a person's family or genetic origins going back through history
- genetic
- relating to genes and DNA passed down between generations
Level 3 — Intermediate
An international team of researchers spanning Spain, Portugal, the United Kingdom, China, and Germany, including scientists from the Max Planck Institute for Evolutionary Anthropology, has demonstrated for the first time that ancient human DNA can be recovered directly from the surfaces of prehistoric cave walls rather than solely from bones, teeth, or sediment.
Published in Nature Communications, the proof-of-concept study analyzed 54 samples collected from 24 rock art panels across several sites, including the hand stencils at Spain's celebrated Altamira cave.
Five of those samples yielded usable ancient human DNA, among them one recovered from a calcite-crusted red dot, a mineral coating that appears to have helped preserve the genetic material for thousands of years.
The technique's significance lies in its non-invasive nature: because it requires no excavation and does not damage the artwork itself, researchers say it could eventually allow them to determine the biological sex and genetic ancestry of the individuals who created specific paintings, transforming how prehistoric behavior is studied at sites too fragile or too significant to disturb.
- proof-of-concept
- a demonstration showing that an idea or method is feasible in practice
- excavation
- the careful digging up of an archaeological site
- non-invasive
- not requiring cutting, digging, or physical disturbance
- sediment
- layers of material, such as soil or sand, that settle over time
- yield
- to produce or provide a result
- preserve
- to keep something in its original state without damage or decay
- coating
- a thin layer covering a surface
- fragile
- easily damaged or destroyed
Level 4 — Advanced
A multinational research consortium, spanning institutions in Spain, Portugal, the United Kingdom, China, and Germany, including the Max Planck Institute for Evolutionary Anthropology, has established, in a proof-of-concept study published in Nature Communications, that ancient human DNA can be retrieved directly from the mineralized surfaces of prehistoric cave walls, a source previously overshadowed entirely by skeletal remains and sedimentary deposits.
Analyzing 54 samples drawn from 24 rock art panels, including the celebrated Paleolithic hand stencils at Altamira, the team recovered genetic material from five specimens, one notably extracted from a calcite-crusted red ochre dot whose mineral encrustation appears to have created conditions conducive to millennia-long DNA preservation.
What distinguishes the technique from conventional paleogenetic sampling is its fundamentally non-destructive character: by targeting residues already deposited on rock surfaces rather than requiring excavation or damage to the artwork, researchers can, in principle, interrogate sites whose archaeological or cultural significance has long placed them beyond the reach of more invasive genetic sampling.
The implications extend beyond mere provenance, offering a path toward inferring the biological sex and genetic ancestry of specific rock art's makers, and by extension, reframing questions of authorship, mobility, and social organization among Ice Age populations that have historically been addressed through stylistic inference alone rather than direct molecular evidence.
- consortium
- a group of institutions or organizations collaborating on a shared project
- mineralized
- having undergone a process in which minerals have accumulated within or on a surface
- sedimentary
- relating to material deposited by natural processes such as water or wind
- specimen
- an individual sample or example used for scientific study
- encrustation
- a hard mineral layer that forms on a surface over time
- conducive
- making a certain outcome or condition more likely
- provenance
- the origin or source of something, including its history
- stylistic
- relating to the distinctive artistic style or manner of a work
