Illustration of modern humans who lived in Europe about 45,000 years ago
Tom Björklund
Modern humans and Neanderthals interbred over a sustained period of around 7000 years, probably in the eastern Mediterranean. That is according to two studies that trace how these two hominins hybridised in unprecedented detail.
“The vast majority of the Neanderthal gene flow… occurred in a single, shared, extended period,” says Priya Moorjani at the University of California, Berkeley.
The studies confirm that modern humans acquired important gene variants by mixing with Neanderthals,…
More than just fossils show us how humans have evolved through time
Ivan M / Alamy Stock Photo
This is an extract from Our Human Story, our newsletter about the revolution in archaeology. Sign up to receive it in your inbox every month.
This month, Our Human Story turns 50 (months old). For the 50th instalment, I thought I would do something a little different: take stock of what’s happened, and look ahead. I emailed 10 researchers, asking them two questions:
What has been the biggest advance in human evolution of the past five years? This could…
There are few things more irritating in everyday life than getting something stuck between your teeth. Thankfully, we can reach for a toothpick – and it seems our ancient ancestors did the same. In fact, a fragment of a 1.2-million-year-old toothpick is perhaps the earliest direct evidence we have of hominins using plants as tools.
Our ancient ancestors probably made frequent use of implements made from plants. But finding evidence of this is extremely tough because botanical materials are so quick to rot away. This means the archaeological record of human tool use is deeply skewed towards the much hardier stone.
All this suggests that the origins of human technology could have been profoundly misunderstood.
Stone Age
The conventional view is it all started with the first stone tools and the dawn of the Stone Age over 3 million years ago. But what if, even before that, there was a botanical age, one based on woodworking and weaving of plant materials? For some researchers, it is absurd not to think that plants would be part of the story. “Perishable material culture is an essential element in our evolutionary past,” says Linda Hurcombe at the University of Exeter in the UK.
Now, we are finally getting a clearer view of this lost age. New techniques are making it possible to find traces of plant-based tools that would otherwise have been missed. And by studying the way modern primates use plants,…
A reconstruction of male and female Neanderthals based on the La Chapelle-aux-Saints fossils
S. ENTRESSANGLE/E. DAYNES/SCIENCE PHOTO LIBRARY
Extract taken fromCreation Lake by Rachel Kushner, published by Jonathan Cape, the latest pick for the New Scientist Book Club. Sign up to read along with us here.
NEANDERTHALS WERE PRONE TO DEPRESSION, he said.
He said they were prone to addiction, too, and especially smoking.
Although it was likely, he said, that these noble and mysterious Thals (as he sometimes referred to the Neanderthals) extracted nicotine from the tobacco plant by a cruder method, such as by chewing its leaves, before that critical point of inflection in the history of the world: when the first man touched the first tobacco leaf to the first fire.
Reading this part of Bruno’s email, scanning from “man” to “touch” to “leaf ” to “fire,” I pictured a 1950s greaser in a white T-shirt and a black leather jacket as he touches a lit match to the tip of his Camel cigarette, and inhales. The greaser leans against a wall—because that is what greasers do, they lean and loiter—and then he exhales.
Bruno Lacombe told Pascal, in these emails I was secretly reading, that the Neanderthals had very large brains. Or at least their skulls were very large, and we can safely infer that their skulls were likely filled, Bruno said, with brains.
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He talked about the impressive size of a Thal’s braincase using modern metaphors, comparing them to motorcycle engines, which were also measured, he noted, for their displacement. Of all the humanlike species who stood up on two feet, who roamed the earth for the last one million years, Bruno said that the Neanderthal’s braincase was way out in front, at a whopping 1,800 cubic centimeters.
I pictured a king of the road, way out in front.
I saw his leather vest, his big gut, legs extended, engineers’ boots resting on roomy and chromed forward-mounted foot pegs. His chopper is fitted with ape hangers that he can barely reach, and which he pretends are not making his arms tired, are not causing terrible shooting pains to his lumbar region.
We know from their skulls, Bruno said, that Neanderthals had enormous faces.
I pictured Joan Crawford, that scale of face: dramatic, brutal, compelling.
And thereafter, in the natural history museum in my mind, the one I was creating as I read Bruno’s emails, its dioramas populated by figures in loincloths, with yellow teeth and matted hair, all these ancient people Bruno described—the men too—they all had Joan Crawford’s face.
They had her fair skin and her flaming red hair. A propensity for red hair, Bruno said, had been identified as a genetic trait of the Thal, as scientific advancements in gene mapping were made. And beyond such work, such proof, Bruno said, we might employ our natural intuition to suppose that like typical redheads, the Neanderthals’ emotions were strong and acute, spanning the heights and depths.
A few more things, Bruno wrote to Pascal, that we now know about Neanderthals: They were good at math. They did not enjoy crowds. They had strong stomachs and were not especially prone to ulcers, but their diet of constant barbecue did its damage as it would to anyone’s gut. They were extra vulnerable to tooth decay and gum disease. And they had overdeveloped jaws, wonderfully capable of chewing gristle and cartilage but inefficient for softer fare, a jaw that was overkill. Bruno described the jaw of the Neanderthal as a feature of pathos for its overdevelopment, the burden of a square jaw. He talked about sunk costs, as if the body were a capital investment, a fixed investment, the parts of the body like machines bolted to a factory floor, equipment that had been purchased and could not be resold. The Neanderthal jaw was a sunk cost.
Still, the Thal’s heavy bones and sturdy, heat-conserving build were to be admired, Bruno said. Especially compared to the breadstick limbs of modern man, Homo sapiens sapiens. (Bruno did not say “breadstick,” but since I was translating, as he was writing these emails in French, I drew from the full breadth of English, a wildly superior language and my native tongue.)
The Thals survived cold very well, he said, if not the eons, or so the story about them goes—a story that we must complicate, he said, if we are to know the truth about the ancient past, if we are to glimpse the truth about this world, now, and how to live in it, how to occupy the present, and where to go tomorrow.
——
My own tomorrow was thoroughly planned out. I would be meeting Pascal Balmy, leader of Le Moulin, to whom these emails from Bruno Lacombe were written. And I didn’t need the Neanderthals’ help on where to go: Pascal Balmy said to go to the Café de la Route on the main square in the little village of Vantôme at one p.m., and that was where I would be.
The art and science of writing science fiction
Take your science fiction writing into a new dimension during this weekend devoted to building new worlds and new works of art
Around 41,000 years ago, the very last Neanderthal took their final breath. At that moment, we became the only remaining hominins, the sole survivors of the once diverse family of bipedal apes.
We will never know exactly when or where this momentous event took place, but we do know the Neanderthals died out suspiciously close to the time when modern humans arrived in their territory. Exactly why they vanished has long been hotly debated, but astonishing revelations from the genomes of the last Neanderthals and hidden in a remarkable cave in France are now painting a detailed picture of these first encounters – and what might have happened next.
“This is a major turning point in our understanding of Neanderthals and their extinction process,” says Ludovic Slimak at the Centre for Anthropobiology and Genomics of Toulouse, France.
Our species, Homo sapiens, and Neanderthals share a common ancestor, but Neanderthals split from our lineage at least 400,000 years ago, evolving in Eurasia, from the Mediterranean to Siberia. Our species is younger, first appearing in Africa some 300,000 years ago and evolving into hominins that were anatomically much like us by at least 195,000 years ago. Modern humans left the continent in waves from around 170,000 years ago, and were thought to have reached western Europe roughly 43,000 years ago, when – according to the…
Creation Lake by Rachel Kushner is a thriller, a spy caper, a comedy and also a poetic take on human history all the way back to the time our species, Homo sapiens, shared Earth with the Neanderthals. It is a sensationally enjoyable novel and has deservedly made the Booker prize longlist.
The story is narrated by our anti-hero, Sadie Smith (not her real name). She is a US undercover operative working for shady employers who is sent to France to infiltrate and ultimately destroy Le Moulin, a group of eco-activists whose members are known as Moulinards.
Sadie sets about her task in an entirely amoral fashion. First, she seduces a man named Lucien who has contacts within the activists. After a few months, she has secured work among the Moulinards and travels to Lucien’s family house, conveniently placed in an area of Guyenne, south-west France, where Le Moulin is based.
The roof leaks, but the house itself is a great eyrie to spy upon her prey from – a job made easier by her high-powered, military grade binoculars and a caseful of high-tech kit.
The novel’s structure is brilliant. We follow Sadie as she worms her way into the justifiably paranoid Moulinard community. We are also led backwards through her life, rifling through her backlist of operations and lingering resentments against those who are attempting (rightly) to expose her. We gradually realise our apparently super-professional operative takes unnecessary and dangerous risks. Is she, in fact, a vulnerable young woman hanging by a thread, or a grenade with the pin pulled out? Or both?
These two strands, moving forwards and backwards, are equally gripping, each informing the other with perfect dramatic timing. But it is the book’s third strand, relating to a much older man’s emails, that becomes the beating heart of the book.
Sadie has hacked into Le Moulin’s group email account so she can read every message they get from someone named Bruno Lacombe. He is a mentor and inspiration to the group, and it makes sense that she pays his emails particular attention.
In the messages, Bruno talks about his views on the superiority of Neanderthals, the inferiority of H. sapiens and his life living alone in a Neanderthal cave. He also lectures the Moulinards on the history of the Guyenne area.
As a plot device, these emails have every right not to work. But we quickly learn to read them intently, just as Sadie does. Soon we realise that it is the relationship between Sadie and Bruno (albeit a relationship only she knows about) that is at the emotional centre of the novel.
She is more interested in him and what he has to say than any of the Moulinards are. Might she run into him before her operation in France is over?
I found Bruno’s musings on the Neanderthals, however biased and unscientific, particularly gripping – perhaps because I read them while on a New Scientist tour of the prehistoric art of northern Spain. The oldest artwork there is believed to be by Neanderthals, and however different (or not) they were from us, Bruno’s passion is evocatively captured.
I can’t say any more without spoiling the high-octane plot. As for Sadie, does she deserve our sympathy, and where do the book’s events leave her as a person? I look forward to reading this again, and perhaps puzzling that out.
Emily also recommends…
The Ministry for the Future Kim Stanley Robinson (Orbit)
Creation Lake is arguably climate fiction. But if you want the ultimate in cli-fi, then read The Ministry for the Future. The book plays out a scenario that is almost upon us as the world heats up. Its structure, made up of fictional eye-witness accounts, is bold and relentlessly brilliant.
New Scientist book club
Love reading? Come and join our friendly group of fellow book lovers. Every six weeks, we delve into an exciting new title, with members given free access to extracts from our books, articles from our authors and video interviews.
The jawbone of a Neanderthal known as Thorin, who is thought to have been part of an isolated population
Xavier Muth
Genetic analysis of a Neanderthal fossil found in France reveals that it was from a previously unknown lineage, a remnant of an ancient population that had remained in extreme isolation for more than 50,000 years. This finding sheds new light on the final phase of the species’ existence.
The fossil, dubbed Thorin after a character in J.R.R. Tolkien’s The Hobbit, was discovered in 2015 at the Grotte Mandrin in the Rhône Valley in southern France when Ludovic Slimak of the Centre for Anthropobiology and Genomics of Toulouse uncovered some teeth in the cave’s soil. The skeleton was painstakingly excavated over the next nine years to reveal 31 teeth, the jawbone, part of the skull and thousands of other bone fragments.
This was an incredible discovery in itself, as remains of Neanderthals – who lived in Eurasia from around 400,000 years ago until they went extinct around 40,000 years ago – are exceedingly rate.
Even more surprising was that Thorin’s genome could be obtained from a fragment of one of his teeth, as DNA isn’t typically preserved in warm climates. This revealed that the fossil was from a male, but opened up a mystery that took years to solve.
By comparing his genome with those of other Neanderthals, Slimak and his colleagues estimated Thorin lived around 105,000 years ago. However, archaeological evidence and analysis of the isotopes in his bones unequivocally showed that Thorin lived no more than 50,000 years ago – making him a “late Neanderthal” from the final phase of the species’ existence.
“For a very long time we [geneticists] were convinced that Thorin really was an early Neanderthal, just because his genetic lineage was so distantly related to contemporary Neanderthals in the same region,” says team member Tharsika Vimala of the University of Copenhagen. “On the other side, the archaeologists were convinced that he was a late Neanderthal. It took years of work from both sides to get to the answer.”
Eventually, the researchers realised that they must have discovered a hitherto unknown lineage of Neanderthals. Thorin was part of a small group who lived between 42,000 and 50,000 years ago. The group seems to have been a remnant of a far more ancient Neanderthal population that diverged from the main Neanderthal population around 105,000 years ago, and had then stayed genetically isolated for more than 50,000 years.
The bones of Thorin during excavation at Grotte Mandrin in France
Ludovic Slimak
Thorin’s DNA showed no evidence of interbreeding between his lineage and that of the main Neanderthal population, despite living in close proximity. “Thorin was completely divergent from any other Neanderthals,” says Slimak.
This isolation could have made the group particularly vulnerable. “Long term isolation or inbreeding can be detrimental to a population’s survival as it can reduce the genetic diversity over time, which in turn can have negative effects on our adaptability to changing environments,” says Vimala.
Slimak, Vimala and their colleagues then re-analysed the genome of another Neanderthal that had lived around 43,000 years ago at Les Cottés, France. They found traces of a “ghost population” in its DNA from a breeding event some 15,000 to 20,000 years previously, with another unknown Neanderthal group.
“This means that there must have been not only two populations among late Neanderthals, but very likely three,” says Slimak. Previously it had been thought that at the time before their extinction, the Neanderthals were all part of one genetically similar population.
“The evidence from Grotte Mandrin is fascinating as it gives some intriguing insights into these late Neanderthal populations and their dynamics,” says Emma Pomeroy at the University of Cambridge.
Creation Lake by Rachel Kushner is a thriller, a spy caper, a comedy and also a poetic take on human history all the way back to the time our species, Homo sapiens, shared Earth with the Neanderthals. It is a sensationally enjoyable novel and has deservedly made the Booker prize longlist.
The story is narrated by our anti-hero, Sadie Smith (not her real name). She is a US undercover operative working for shady employers…
Genetic analysis of 50,000-year-old Neanderthal skeletons has uncovered the remnants of three viruses related to modern human pathogens, and the researchers think they could be recreated
A reconstruction of what Shanidar Z might have looked like, by Dutch twins Adrie and Alfons Kennis
BBC Studios/Jamie Simonds
MEET Shanidar Z, one of the most important Neanderthal discoveries in a generation. Her remains, thought to date back 75,000 years, were fully unearthed five years ago in a re-excavation of a legendary archaeological site, Shanidar cave, in the Kurdistan region of Iraq.
She appears to have been deliberately interred along with a cluster of nine other Neanderthal men, women and children, whose skeletons were uncovered from the 1950s onwards and transformed our…
