We are a movable species. In less than 50 thousand years, Homo sapiens has penetrated practically all corners of humanity. And the story started long before trains and airplanes.
This is an episode about thoese epic migrations, with a focus on the two furthest edges of the human migratory map: the Americas in the West and the Polynesian islands in the east. In the end, we discuss emerging evidence that those branches met each other -- work coming directly out of the work of my guest, Andrés Moreno-Estrada.
Enjoy!
DECODING OUR STORY
This is episode 3 in the "Decoding Our Story" mini-series, recorded live at the Salk Institute's CARTA symposium on ancient DNA. The other episodes are:
"The Neanderthal Mirror: Latest Findings About the Lines Between Us" ~ David Gokhman
"Beyond Race: A New Outlook on the Shape of Humanity" ~ Diyendo Massilani
FACT CHECKING
No errors have been found as of now. If you find an error in this or other episodes, get in touch via the form below.
LINKS
Articles and essays: OnHumans.Substack.com
Support: Patreon.com/OnHumans
Contact Form: https://forms.gle/h5wcmefuwvD6asos8
KEYWORDS
Human population history | Human origins | Anthropogeny | Anthropology | Ancient Migration | Out of Africa | Homo sapiens | Ancient DNA | Comparative genetics | Austronesian expansion | Taiwan | Admixture | Archaeogenetics | Archaeology | Polynesia | Easter Islands | Rapa Nui | Hawai'i | Aotearoa New Zealand | Tonga Fiji | Native American origins | Latino genetics | Latinx genetics | Hispanic genetics | Indegenous genetics |
European thinkers once divided humanity into distinct "races". The idea stuck, even if the science moved on. The shape of humanity, it turned out, is far messier than the old race theorists ever imagined.
This much is well known.
Still , genetics does study different human "populations". Biological differences between these populations are reported every day. So have we simply changed words? Has anything really changed?
Yes, everything has changed.
To explain why, I'm glad to have Diyendo Massilani on the show.
Trained in France and Gabon, Massilani runs a lab at the Yale School of Medicine, where he studies ancient DNA and human adaptations. This fall, his lab has produced one of the most interesting analysis of human biodiversity that I have ever seen. I'm proud to feature it on the podcast before publication.
Our conversation begins from the counter-intuitive implications of the Out of Africa theory, and its significance for ideas about race. We then discuss Massilani's own analysis about how the level of genetic differences between modern-day humans.
As always, we finish with my guest's reflections on humanity.
DECODING OUR STORY
This is episode 2 in the "Decoding Our Story" mini-series, recorded live at the Salk Institute's CARTA symposium on ancient DNA. The other episodes are:
"The Neanderthal Mirror: Latest Findings About the Lines Between Us" ~ David Gokhman (published)
"Restless Humanity: The Epic Migrations Into America, Polynesia, and... Beyond?" ~ Andrés Moreno-Estrada (5th of Dec)
FACT CHECKING
No errors have been found as of now. If you find an error in this or other episodes, get in touch via the form below.
LINKS
Articles and essays: OnHumans.Substack.com
Support: Patreon.com/OnHumans
Contact Form: https://forms.gle/h5wcmefuwvD6asos8
KEYWORDS
Human evolution | Human origins | Anthropogeny | Anthropology | Paleoanthropology | Genetics | Homo sapiens | Ancient DNA | Comparative genetics | Human biodiversity | Admixture | Archaeogenetics | Archaeology | Mbuti | Papuans | Neanderthals
Genetics is rewriting the human story. This week, On Humans takes you behind the scenes of this rapidly evolving frontier via three live-recordings, captured at the Salk Institute's CARTA symposium on ancient DNA.
The first episode explores the differences between us and the Neanderthals.
For centuries, we tried to understand Neanderthals through stones and bones alone. Now genetics is offering a new tool, allowing researchers to see how ancient bodies and brains developed. In this opening episode, David Gokhman explains what these new tools are revealing about us, Neanderthals, and the lines between us.
UP NEXT
"Beyond Race: New Surprises About the Shape of Humanity" ~ Monday Dec 1st with Diyendo Massilani
"Restless Humanity: The Epic Migrations Into America, Polynesia, and... Beyond?" ~ Friday Dec 5th with Andrés Moreno-Estrada
FACT CHECKING
No errors have been found as of now. If you find an error in this or other episodes, get in touch via the form below.
LINKS
Articles and essays: OnHumans.Substack.com
Support: Patreon.com/OnHumans
Contact Form: https://forms.gle/h5wcmefuwvD6asos8
KEYWORDS
Human evolution | Human origins | Anthropogeny | Anthropology | Archaeogenetics | Archaeology | Paleoanthropology | Genus Homo | Neanderthals | Ancient DNA | Comparative genetics | Archaeogenetics | Language evolution | Origins of language | Symbolic culture | Extinction | Species concept
The science of human origins keeps producing new theories. But are we any closer to telling a true story of human origins? Or are we simply drowning in data?
Earlier this November, the chair of UCSD’s Department of Anthropology invited me to explore this question in a campus talk. My optimistic claim was that underneath many of the field’s important debates, a powerful story has been emerging. At its core, this is a story about calories, cooperation, and climate change. And at the centre of it are not men hunting or women gathering.
At the centre of it are children playing and learning.
Here is the recording from the talk .
Check out also my Substack essay inspired by this talk, with many of the pictures and graphs from the slides!
PS. I was in San Diego to attend a CARTA symposium on the role of genetics in the study of human origins. I managed to record three episodes behind the scenes.
Live recordings coming soon!
FACT CHECKING
No major errors have been found yet. As a small correction, the mention about macaques vs giraffe's should have been about neurons in the cortex, not total neurons in the brain. The main idea doesn't change.
If you find an error in this or other episodes, get in touch via the form below.
LINKS
Articles and essays: OnHumans.Substack.com
Support: Patreon.com/OnHumans
Contact Form: https://forms.gle/h5wcmefuwvD6asos8
KEYWORDS
Human evolution | Human origins | Anthropogeny | Anthropology | Paleoanthropology | Genus Homo | Australopithecins | Human brain | Comparative neuroanatomy | Human tool cultures | Alloparenting | Cooking hypothesis | Expensive tissue hypothesis | Life history | r vs K strategies |
You decided to start reading this text. The choice was yours. But could we have chosen otherwise?
In this short epilogue to this fall's brain science -series, Oxford biologist Tim Coulson gives his defense of free will.
(The episode is an unheard clip from the conversation with Tim Coulson, originally recorded as part of the Origins of Humankind -series in March 2025. )
LINKS
Tim Coulson's book is called The Universal History of Us (in the UK) and The Science of Why We Exist (in the US).
For more episodes on the human brain, check OnHumans.Substack.com/Brain
Want to support the show? Join the club at Patreon.com/OnHumans
MENTIONS
Names: Albert Einstein | Niels Bohr
Terms and concepts: free will | many worlds -interpretation vs the Copenhaguen interpretation of quantum mechanics | Brownian motion | Quantum biology | stochasticity vs determinism | neural integration vs complexity | chance & necessity | philosophy | physics | biology | neuroscience
Science has learned much about the brain. But how well do we understand this organ of the mind? Are we even close to cracking the neural code? Is a groundbreaking theory of consciousness just around the corner?
In this final episode of the brain science -series, Matthew Cobb takes us on a tour of the story of neuroscience. We meet many colourful characters, but this is not just a history for history’s sake. More importantly, this is a reflection on the increasingly clear limits that brain science is coming up against — limits often left invisible behind the thirst for stories about new discoveries.
Enjoy!
FACT CHECKING
No mistakes have been found in this episode. If you spot an error in this or other episodes, please reach out on Substack or via email.
LINKS
Matthew Cobb’s book is The Idea of the Brain: The Past and Future of Neuroscience
For more episodes on the human brain, check OnHumans.Substack.com/Brain
Want to support the show? Join the club at Patreon.com/OnHumans
MENTIONS
Names: Matthew Cobb | Galen | Aristotle | Andreas Vesalius | William Harvey | William Shakespeare | Queen Victoria | Karl Marx | Pierre Paul Broca | René Descartes | Eve Marder | David Marr | Francis Crick | Geoffrey Hinton | John Hopfield | Warren McCulloch | Walter Pitts | John von Neumann | Alan Turing | Kenneth Craik | Sir John Eccles | Elon Musk | Nicolaus Copernicus | Galileo Galilei
Terms and concepts: recurrent laryngeal nerve | phrenology | localization of function | strokes/aphasia | Broca’s area | plasticity | hemispheric lateralization | corpus callosum | split-brain | consciousness | anesthesia (halothane, etc.) | drugs & neuromodulators | SSRIs | serotonin | dopamine | psychedelics | obster stomatogastric ganglion | three-body-problem | EEG “brainwaves” (gamma, theta, etc.) | David Marr’s levels | neural code | PDP / connectionism | backpropagation | LLMs (e.g. ChatGPT, DeepSeek) | biological plausibility vs engineering | von Neumann architecture | McCulloch–Pitts logical neurons | neural correlates of consciousness (NCC) | “Jennifer Aniston” cells | single-unit recording | connectomics | Human Brain Project | cochlear implants | BCI / robotic arm control | tetraplegia | problem of consciousness | enactive cognition
Dopamine. Serotonin. Endorphins. We have all heard these terms. And these are not just scientific curiosities. Many of us use brain chemistry to describe our feelings and frustrations. Few are those who have never wondered if their brain chemicals are "just off balance".
So how accurate are the popular theories about these mythic molecules?
To guide us through the topic, I'm joined by Judy Grisel—an ex-addict and a world-leading neuroscientist of addiction.
We will discuss all the main elements of brain chemistry by using drugs and addictions as a window into the topic.. Towards the end, we also search for ways to better help those who struggle with addiction.
As always, we finish with my guest's reflection on humanity.
DIG DEEPER
This episode is part 4 of this autumn's brain science series. See more
at OnHumans.Substack.com/Brain
Judy Grisel’s book is Never Enough: The Neuroscience and Experience of Addiction
Want to support the show? Join the club at Patreon.com/OnHumans.
FACT-CHECKING
No major mistakes have been found so far.
As a minor note, the SSRI study we mention in healthy volunteers primarily assessed cognitive processing (reinforcement learning/sensitivity) rather than self-reported “emotional flattening”; however, general blunting of emotional responses in healthy participants has been reported by earlier researchers.
If you spot an error in this or other episodes, please reach out on Substack or via email.
KEYWORDS
Names mentioned: Kent Berridge | Mark Lewis | Barbara Sahakian | Trevor Robbins
Technical concepts: dopamine | wanting vs liking | serotonin (5/HT) | serotonin receptor 2A | selective serotonin uptake inhibitors SSRIs | GABA vs glutamate | endorphins | endocannabinoids | alcohol | cocaine | MDMA | psychedelics | behavioral addictions (e.g. porn) | runner's high | cannabis / THC | neurogenesis & pruning | brain plasticity | SSRIs | MDMA (SERT reversal) | emotional blunting | opponent-process theory (A→B) | addiction as disease vs learned state | meaning, motivation, recovery
Our brains can feel remote and abstract. Hidden behind Latin names and textbook diagrams, they rarely feel as personal to us as our hearts and stomachs.
In this episode, neurologist and author Pria Anand helps us get a little more intimate with that grey, wrinkly seat of our consciousness.
Together we explore both the structural architecture and the musical synchronies of the brain. We travel across the left and the right brain, "listen" to the meaning of different brain waves, and discuss some of the most perplexing examples from the annals of neuroscience. What emerges is not just an intimate journey through the organ that makes us who we are, but also an exploration on the meaning of pain, identity, and storytelling.
As always, we finish with my guest's reflection on humanity.
📖 Dr Anand's new book is The Mind Electric: A Neurologist on the Strangeness and Wonder of Our Brains
Want to support the show? Join the club at Patreon.com/OnHumans
FACT CHECKING
No major mistakes have been found so far.
As a small correction, the patient with conflicting career goals did not, when asked, want to be an "architect", but a "draftsman". See "A Divided Mind" by Joseph LeDoux and colleagues (free PDF).
If you find a mistake in this or other episodes, you reach out directly to at Substack.com/OnHumans or via email.
KEYWORDS
Names mentioned: Michael Gazzaniga | Joseph LeDoux | Patient P.S. | Henry Molaison (H.M.) | William Halsted | Julius Caesar | Fyodor Dostoevsky | Dr. Strangelove | Matthew Cobb | Suzana Herculano-Houzel
Terms and concepts discussed: neurology | neuropsychology | brain damage | lesions | REM sleep (rapid eye movement) | paradoxical sleep | REM atonia | narcolepsy | sleep apnea | Parkinson’s disease | dementia | slow-wave sleep | EEG (electroencephalography) | brain oscillations | alpha waves | theta waves | seizure | epilepsy | focal seizure | generalized tonic-clonic seizure | aura | déjà vu | phantom smell (olfactory hallucination) | corpus callosum | callosotomy | anterior cerebral artery | cerebral aneurysm | hemispatial neglect | apraxia | alien hand (anarchic hand) | visual cortex | language dominance (left hemisphere) | thalamus | somatosensory cortex | limbic system | hippocampus | mesial temporal lobe | anterior temporal lobectomy | anterograde amnesia | retrograde amnesia | Korsakoff dementia (Wernicke–Korsakoff) | transient global amnesia | posterior cortical atrophy | aphasia | confabulation | nociception | lidocaine | dissociative anesthetic | epidural anesthesia | spinal anesthesia | paralytic (neuromuscular blocker) | neocortex | cortex | brainstem | cerebellum | cerebellar lesion | ataxic dysarthria | folia (cerebellar) | trunk (elephant, motor control) | Buddha’s “two arrows” parable
Here is a simple story about the origins of the human brain: All primate brains are good at packing neurons into a small space—they are neural supercomputers. The human brain is just what you’d expect from a monkey of our size: big, packed with neurons, but no more special than that. It's the chimps and gorillas who are special: without cooked food, their brains stay oddly small.
Or so argues Suzana Herculano-Houzel, my guest in last week's episode.
In today's episode, paleo-neurologist Dean Falk argues that the story is stranger still.
I'll let her tell you why.
Enjoy!
DIG DEEPER
See also last spring's episode with Dean Falk on toolmaking and childhoods, as part of the Origins of Humankind -series.
SUPPORT THE SHOW
MENTIONS AND KEYWORDS
Scholars
Charles Darwin | Dietrich Stout | Robin Dunbar | Katarina Semenderfi | Weiwei Men | Joseph Ledoux | Jane Goodall
Technical terms
Endocasts | Sulci and gyri | Broca's area | Brodmann Area 10, also known as BA10 and the frontal pole | Acheulean hand axe technology
Keywords
Brain science | Neuroscience | Neurology | Paleoneurology | Evolutionary Anthropology | Comparative Anatomy | Cognitive Archaeology | Origins of Consciousness
This is exciting!
On Humans is launching a new series to explore the wonders of the human brain. The new episodes will drop throughout September and early October.
To set the stage, we will revisit a conversation with neuroscientist Suzana Herculano-Houzel, newly re-edited and remastered. It’s the simplest and most elegant story I’ve heard about how our brains came to be — and it sets the stage for the debates to follow.
Enjoy!
DIG DEEPER
Herculano-Houzel's book is called The Human Advantage.
You can read a free episode breakdown at OnHumans.Substack.com
For more on human evolution, see the full series on the Origins of Humankind.
SUPPORT THE SHOW
You can pledge your support at Patreon.com/OnHumans
KEYWORDS
Human evolution | Brain evolution | Neuroscience | Biology | Anthropology | Cerebral Cortex | Neuron counting | Comparative neurology | Comparative biology | Comparative anatomy | Harry Jerrison | Paleoanthropology | Human origins |
Why did the great powers of Asia stagnate whilst Europe was rising? This question—often called the Great Divergence—is one of the most defining questions of modern history.
In this talk, I use the case of Britain and India to probe that divide. Did colonialism make Britain rich and India poor? Or was Britain’s rise already underway before conquest? And what does all this tell us about the everyday experiences of the people of on two sides of the divide?
This recording comes from the British Academy, where I was invited to speak at the launch of Bishnupriya Gupta’s An Economic History of India. I was honoured to give this talk on this exceptionally rich topic, speaking after some of the leading experts of India's history.
How did I do?
Share your thoughts in the comments or at OnHumans.Substack.com.
Enjoy!
DIG DEEPER
Read: See my article on the "Origins of Modern India". Complement with my "Origins of Modern China" from last fall.
Listen: Check out the two-part "What About India?" series from this February. Complement with the episode with Professor Tirthankar Roy this July.
SUPPORT THE SHOW
You can pledge your support at Patreon.com/OnHumans
KEYWORDS
Colonialism | Imperialism | British East India Company | European colonialism | History of Colonialism | Geographical Determinism | Environmental Determinism | Political History | Fiscal History | Great Divergence | Western Dominance | Early Modern History | Kenneth Pomerantz | Steven Broadberry
Climate. Weathers. History.
Here's an encore episode to wrap up the mini-series on these themes!
This episode on the puzzling origins of farming is one of my all-time favourites on the show. I thought it was a good time to put it out again.
You can also read my essay on the topic here.
Enjoy!
~
ORIGINAL SHOW NOTES
Agriculture changed everything. Traditionally, this “Neolithic Revolution” was celebrated for opening the gates of civilisation. Recently, it has been compared to the original sin. But whatever our take on agriculture, we should be puzzled by one thing: Why did our ancestors start to farm in the first place?
It's not like early farmers had improved lives. Quite the opposite, they worked harder and suffered from worse health. So why did so early farmers stick to it? And why did farming spread so far and wide?
Andrea Matranga thinks he has the answer.
An economic historian at the University of Torino, Matranga links agriculture to climate change. This is not a new idea — not as such. After all, agriculture developed in lockstep with the end of Ice Ages. For years, this vague link has formed my own pet-theory on the matter.
But I never paused to reflect on the obvious problem with it. There was never an “Ice Age” in Sudan. Why didn’t humans just farm there?
Matranga has the answer to this and many other puzzles. And surprisingly, his answer is linked to the movements of Jupiter. I will let him tell you why.
We begin this episode covering some previous theories on the origins of agriculture. Next, we dissect Matranga's theory and the evidence for it. Towards the end, we talk about the spread of farming — peaceful and violent — and note a neglected downside to the hunter-gatherer lifestyle. As always, we finish with my guest’s reflection on humanity.
LINKS
You can find my summary of Matranga's theory with links to academic articles at OnHumans.Substack.com.
Do you like On Humans? Join the group of patrons at Patreon.com/OnHumans!
MENTIONS
Names
V. Gordon Childe | Jared Diamond | Mo Yan | Alain Testart | Robert J. Braidwood | Milutin Milanković | Feng He | James Scott | Richard B. Lee | Irven Devore
Terms
Neolithic | Holocene | Pleistocene | Consumption smoothing | Malthusian limit | Milankovitch cycles
Ethnic groups
Natuffians | Pacific Northwestern hunter-gatherers
Keywords
Anthropology | Archaeology | Big History | Economic History | Agricultural Revolution | Neolithic Revolution | Homo Sapiens | Sapiens | Climate change | Paleoclimatology | Seasonality | Origins of Agriculture | Neolithic Revolution | Climate Change | Hunter-Gatherers | Human Civilization | Population Growth | Sedentary Lifestyle | Subsistence Farming | Evolutionary Adaptation | State Violence | Agricultural Coercion | Ancient DNA
Before they built empires, the Europeans built ports.
Across Africa and Asia, European sailors arrived as merchants. They traded and negotiated. They defended their interests—sometimes with cannon fire. But they were not trying to govern a foreign land.
Yet things changed.
Why?
Historian Tirthankar Roy has a bold new answer.
Roy is a professor at the London School of Economics, where he teaches a renowned course on the economic history of colonialism.
His most recent book isThe Origins of Colonialism. And in it, Roy explains that we cannot understand the origins of European Empires in Asia and Africa by simply zooming into the actions of Europeans. We must understand what happened to the elites of the lands being conquered. And more often than not, that had to do with the rains, rivers, and access to water.
In this episode, Roy explains how his theory sheds light on the rise of the British Empire in India. Along the way, we also sketch many broader ideas about the story of global colonialism, from Chinese ports to the conquest of Burma and from the water problems of Mumbai to the rubber plantations of Congo.
Enjoy!
This is part two of this summer’s mini-series on the way climate has shaped the human story. Curious to hear more? Head to last week’s episode on how an ancient climate change paved the way for the very origins of humanity!
Thoughts about Roy’s points? Or mine? Voice them at OnHumans.Substack.com! (Episode page uploaded within an hour of the episode drop.)
SUPPORT THE SHOW
You can pledge your support at Patreon.com/OnHumans
DIG DEEPER
Check out also the two-part "What About India?" series from this February!
KEYWORDS
Colonialism | Imperialism | British East India Company | European colonialism | Africa | Asia | India | China | History of Colonialism | Geographical Determinism | Environmental Determinism | Political History | Military History | Fiscal History | Great Divergence | Western Dominance | Early Modern History
On Humans is back from the break!
To mark the summer heat, here is a two-part series on how climate has shaped the human story. In next week's episodes, we will explore the role of water and weather in the origins of European colonialism. But today, we start by crawling deeper into the past: to the origins of humanity itself.
In this episode, Yale professor Jessica Thompson helps us navigate one of the most influential ideas in human evolution: that an ancient climate change pushed our ancestors out of the jungle, onto the savanna, and eventually toward big brains, meat-eating, and tool use.
This is a captivating story. It has been mentioned many times on the show. But do the details hold up?
What follows is a sweeping account of human origins, which nuances — but does not reject — the grand arc explored in The Origins of Humankind series. This is a story about a climate that has never remained steady. It serves as a poignant reminder of the weather's power to shape human destiny. But it’s also a story about human resilience and our capacity, from the very beginning, to defy the iron laws of ecology. Enjoy!
Thoughts about the episode? Share them at OnHumans.Substack.com. You'll also find a bunch of links to dig deeper.
SUPPORT THE SHOW
You can pledge your support at Patreon.com/OnHumans
MENTIONED SCHOLARS
Richard Wrangham (guest in summer 2023)
Sarah Blaffer Hrdy (guest in Spring 2024)
KEYWORDS
Human evolution | Human origins | Paleoanthropology | Human biology | Climate change | Miocene | Pleistocene | Brain evolution | Brain energetics | Deep history | Anthropology | Archaeology | Austrolopithecins | Genus homo | Bipedalism | Evolution of apes | Missing link | Tsetse flies |
Binary thinking is out of fashion. But what about biological sex?
Whatever we might say about diversity and fluidity, the ideas of “male” and “female” seem essential in biology. I’ve taught the subject. I’ve drawn bees and flowers, with arrows from anthers to ovaries. I’ve used the terms “dad cell” and “mother cell” while doing so. I don’t know how I could have done it any differently.
And maybe that’s just fine. Human sex cells are binary: sperm and egg. But here’s the twist: humans aren’t sex cells. Humans are animals. And animals aren’t so easily grouped. XY chromosomes don’t always produce a penis. And when we turn to hormones, brains, and behaviours, the picture gets even messier.
Or so argues Princeton Professor Agustín Fuentes, a leading expert on human biology. His new book, Sex Is a Spectrum, came out this week. It makes the case that biology no longer supports a sharp separation between male and female. Whether you agree with Fuentes or not, it’s an argument worth taking seriously.
We had a great conversation, ranging from hermaphroditic worms to sex-changing fish, and from gender stereotypes to intersex humans. At times, I pushed back. But I learned a lot throughout the conversation. I hope you do too.
Thoughts about Fuentes’s argument? Or my takes? Share them at onhumans.substack.com. You'll also find more links to dig deeper.
Support the show: patreon.com/onhumans
MENTIONS
Agustín Fuentes: Sex is a Spectrum; Creative Spark; Race, Monogamy, and Other Lies They Told You
Yuval Noah Harari: Sapiens, A Brief History of Humankind
Jared Diamond: Guns, Germs, and Steel
Steven Pinker: How the Mind Works
Sara Blaffer Hrdy: Father Time (see episode in April 2023)
KEYWORDS
Biological sex | gametes | chromosomes | intersex | hermaphrodite | sex determination | sexual dimorphism | sex-changing fish | clownfish biology | evolutionary biology | human evolution | Agustín Fuentes | anthropology of sex | reproductive biology | nonbinary biology | developmental biology | sex differences | male and female | sex in animals | sex in humans | genetics of sex | human biology | science of sex | sex vs gender | c. elegans sex | 5-alpha-reductase type 2 deficiency (5α-R2D) | PCOS (Polycystic Ovary Syndrome) |
And so it ends! In the final episode of The Origins of Humankind, we explore the aftermath of the story so far—the story of how one peculiar species, Homo sapiens, evolved, spread, and outlived its relatives.
Guiding us through this final chapter is Johannes Krause once again. Together, we uncover the emerging picture of the global spread of farming, pastoralism, and other key ingredients of modernity. Along the way, we explore some of the central questions of history—from the origins of inequality to the surprisingly pivotal role played by the peoples of the Eurasian steppe. (Yes, Mongols will make an appearance! But the story of the steppe goes much deeper...)
As always, we end with my guest’s reflections on humanity.
Enjoy!
LINKS
More material: OnHumans.Substack.com/Origins
Support the show: Patreon.com/OnHumans
Free lectures on human origins: CARTA
Krause's books: A Short History of Humanity; Hubris: The Rise and Fall of Humanity
ABOUT THE SERIES
The Origins of Humankind is produced by On Humans and UC San Diego's Centre for Academic Research and Training in Anthropogeny (CARTA). Other guests include Chris Stringer, Dean Falk, and Tim Coulson.
KEYWORDS
Anthropology | Biology | Human evolution | Human origins | Homo sapiens | Agriculture | Ancient DNA | Climate changes | Pleistocene | Holocene | Archaeology | Neolithic | Yamnaya | Bell Beakers | Proto Indo-Europeans | Ötzi Ice Man | Gunpowder Empires | Bantu-expansion | Austranesian expansion | Sami poeple | Y-chromosome bottleneck |
The time has come! This is where our story truly begins.
In Episode 4 of The Origins of Humankind, we finally turn the spotlight on Homo sapiens. Guiding us through this journey is Johannes Krause, director of the Max Planck Institute for Evolutionary Anthropology and a pioneer of one of the greatest scientific revolutions of our time: the science of ancient DNA.This ability to extract DNA from fossils has transformed our understanding of the human past—giving us tools to tell a genuinely global history of our species.
In this episode, we use the magic of ancient DNA to explore the world our species was born into: a weird, wild Ice Age planet teeming with other human species, from Flores Hobbits to Neanderthal Giants. We touch on big questions, such as:
We end at the dawn of the Holocene—the warm, wet period that would give rise to farming, cities, and everything we call “history.” That’s the story we’ll tackle in the final episode of The Origins of Humankind. Stay tuned. And enjoy this episode!
LINKS
More material: OnHumans.Substack.com/Origins
Support the show: Patreon.com/OnHumans
Free lectures on human origins: CARTA
Krause's books: A Short History of Humanity; Hubris: The Rise and Fall of Humanity
ABOUT THE SERIES
The Origins of Humankind is produced by On Humans and UC San Diego's Centre for Academic Research and Training in Anthropogeny (CARTA). Other guests include Chris Stringer, Dean Falk, and Tim Coulson.
KEYWORDS
Anthropology | Biology | Human evolution | Human origins | Homo Erectus | Australopithecines | Brain evolution | Paleoneurology | Hominins | DNA | Homo sapiens | Climate changes | Pleistocene | Cognitive evolution | Cognitive archaeology | Stone tools | Palaeolithic | Neanderthals | Homo floresiensis | Denisovans | Homo longi | Sima de los Huesos | Gravettian | Cannibalism | Aurignacian | Svante Pääbo |
Things are about to get personal... In episode 3 of The Origins of Humankind, we zoom into the birth and spread of humanity itself.
Our guide is the iconic Chris Stringer, one of the most influential paleoanthropologists alive. Together, we trace the origins of our genus and the emergence of Homo sapiens as the last surviving human species. While doing this, we meet many oddities, such as rhino hunting along the River Thames, but we also explore some of the biggest questions in human evolution:
As always, we finish with my guest's reflections on humanity.
MORE LINKS
More material: OnHumans.Substack.com/Origins
Support the show: Patreon.com/OnHumans
Free lectures on human origins: CARTA
Stringer's books: Lone Survivors; Our Human Story
WHAT'S NEXT
#4-5: The Story of Sapiens, in Two Parts
The series finishes with two episodes on the story of Homo sapiens, using the magic of ancient DNA to tell a genuinely global history of our species.
Key question: How did migrations shape the human story? Why are we the only humans left? And how did humans spread worldwide, first as hunters and gatherers, then as farmers and shepherds?
Your guide: Johannes Krause was the first scholar to discover a new species of humans by DNA alone. Co-author of Hubris, and A Short History of Humanity, he is now the Director of the Max Planck Institute of Evolutionary Anthropology.
When: March 16th & 23rd, 2025
KEYWORDS
Anthropology | Biology | Human evolution | Human origins | Homo Erectus | Australopithecines | Brain evolution | Paleoneurology | Hominins | Cave art | Homo sapiens | Climate changes | Pleistocene | Cognitive evolution | Cognitive archaeology | Stone tools | Palaeolithic | Neanderthals | Alloparenting | Expensive tissue -hypothesis | Radiator theory | Brain growth | Palaeoanthropology |
The story continues! In part 2 of the Origins of Humankind, we trace the first steps of our ancestors after they left the chimpanzee lineage.
To get humanity going, our ancestors had to wander through millions of years of what anthropologist Dean Falk has called the Botanic Age. It's a time shrouded in mist, yet it may hold the key to some of humanity’s most defining traits — from language and music to our clumsy toes and our large brains.
Our guide is Falk herself, a Distinguished Professor of Anthropology and the world's leading expert on human brain evolution. Together, we try to make sense of topics such as:
As always, we finish with the guest’s reflections on humanity.
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WHAT'S NEXT
Origins of Humankind #3: What Is a Human?
The stage has been set. It is time for humanity to enter. But what is a human? What makes a skeleton fall into the Genus "Homo"? And why did this puzzling genus evolve?
Key questions: Why did humans evolve? And how do modern humans differ from Neanderthals or other extinct humans?
Our guide: Chris Stringer is an iconic figure in the field, best known for his groundbreaking work towards the widely accepted Out of Africa -theory of human evolution. His career at London’s Natural History Museum stretches across five decades.
When: April 9th, 2025
KEYWORDS
Anthropology | Primatology Human evolution | Human origins | Homo Erectus | Australopithecine | Australopithecus africanus | Brain evolution | Paleoneurology | Apes | Great apes | Chimpanzees | Bonobos | Gorillas | LSA | Cognitive evolution | Cognitive archaeology | Baby slings | Motherse | Parentese | Baby talk | Putting the baby down -hypothesis | Radiator theory
What does war do to the human psyche? It can traumatise. It can cause grief. It can normalise violence and make demons out of the enemy. But difficult times can also elevate our care and compassion. And while much of the new solidarity is focused on those on “our side”, the helping hand does not always stop at the border.
Or so argues anthropologist Greta Uehling, the author of Everyday War (2023). Building on over 150 interviews with Ukrainian civilians and ex-combatants, Uehling’s work brings depth and nuance to the topic - a topic often simplified by naive contrasts between peaceful care and brutal violence. Profoundly optimistic in ways, Uehling is still far from romanticising war. Rather, she paints a humane picture of people finding meaning from the challenges of violent conflict.
Dr Uehling sat down with Ilari to discuss various stories and lessons from Ukraine. As always, the episode finishes with Dr Uehling's own views on humanity.
Mentioned scholars
Yuval Noah Harari / Paul Ricoeur / Hans-Georg Gadamer
Names of the Ukrainian respondents have been altered to protect their identity
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Get in touch: ilari@onhumans.org