
The Man Bringing Extinct Creatures Back To Life - Ben Lamm
Chris Williamson (host), Ben Lamm (guest), Narrator
In this episode of Modern Wisdom, featuring Chris Williamson and Ben Lamm, The Man Bringing Extinct Creatures Back To Life - Ben Lamm explores gene Editing Mammoths: De-Extinction, Ecosystems, And Humanity’s Genetic Future Ben Lamm, founder of Colossal Biosciences, explains how his company uses advanced gene editing and ancient DNA to create ‘proxy’ versions of extinct animals like the woolly mammoth, dodo, and thylacine. Rather than cloning dead animals, they sequence degraded DNA from remains, compare it to living relatives, and edit embryos to express the key traits of the extinct species. Lamm argues these projects are not just spectacle: mammoths could help stabilize Arctic permafrost and slow climate change, thylacines could rebalance Tasmanian ecosystems, and the dodo can drive invasive-species removal and serve as a powerful symbol of human-caused extinction. Throughout, he and Chris Williamson explore the technical, ecological, ethical, and human-health implications of large-scale genome editing and reproductive technologies.
Gene Editing Mammoths: De-Extinction, Ecosystems, And Humanity’s Genetic Future
Ben Lamm, founder of Colossal Biosciences, explains how his company uses advanced gene editing and ancient DNA to create ‘proxy’ versions of extinct animals like the woolly mammoth, dodo, and thylacine. Rather than cloning dead animals, they sequence degraded DNA from remains, compare it to living relatives, and edit embryos to express the key traits of the extinct species. Lamm argues these projects are not just spectacle: mammoths could help stabilize Arctic permafrost and slow climate change, thylacines could rebalance Tasmanian ecosystems, and the dodo can drive invasive-species removal and serve as a powerful symbol of human-caused extinction. Throughout, he and Chris Williamson explore the technical, ecological, ethical, and human-health implications of large-scale genome editing and reproductive technologies.
Key Takeaways
De-extinction focuses on reviving key genes, not perfectly resurrecting lost species.
Colossal builds ‘proxy’ animals by editing the closest living relatives (e. ...
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Ancient DNA is patchy but reconstructable when you have many samples and high coverage.
By sequencing dozens of mammoth genomes at 20–50x coverage, researchers can statistically infer most of the genome despite heavy degradation, focusing on functionally important regions rather than seeking a perfect 100% sequence.
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Different species require tailored reproductive strategies, including radically new tech.
Mammals like mammoths use somatic cell nuclear transfer and long surrogate gestations, while birds like dodos will likely be produced via edited primordial germ cells in chickens; for scale, Colossal is investing heavily in artificial wombs to bypass slow, risky surrogacy.
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Revived species are tools for large-scale ecosystem engineering and climate mitigation.
Mammoth-like elephants could turn dark, low-efficiency Arctic forests back into reflective, carbon-storing grasslands, cooling permafrost by up to ~8°C and helping keep vast stores of methane and carbon locked in the ground.
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Symbolic species can drive real policy and conservation change.
Reintroducing the dodo won’t magically fix Mauritius, but it forces invasive-species removal and habitat restoration, while the thylacine project aims to restore an apex predator whose absence may be dooming Tasmanian devils via unchecked facial tumor disease.
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Genome editing tech being built for animals will likely translate to human medicine.
Tools for multiplex editing, DNA synthesis, and understanding genotype-to-phenotype links (like elephant cancer resistance via p53) could underpin future therapies to reverse plaque buildup, modify disease risk, and even increase radiation tolerance—pending ethical and regulatory decisions.
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Ethical lines between selection and enhancement are blurrier than most people assume.
Embryo selection for lower disease risk and eventual gene-editing-based enhancement sit on the same continuum as selective breeding of crops and dogs; Lamm argues that technology is now outpacing regulation, so societies must proactively decide how far to go.
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Notable Quotes
“Fundamentally, we are de-extincting the core genes that make all of these species those unique species.”
— Ben Lamm
“You can’t clone a dead animal… so you have to look for its closest living relative.”
— Ben Lamm
“If we de‑extincted the core genes that made a mammoth a mammoth, then to me, that’s a mammoth.”
— Ben Lamm
“We have the tools and technologies to make humanity better through gene editing.”
— Ben Lamm
“More is possible today than we as humans are allowed to do.”
— Ben Lamm
Questions Answered in This Episode
Where should society draw the ethical line between medically necessary gene editing and optional human enhancement?
Ben Lamm, founder of Colossal Biosciences, explains how his company uses advanced gene editing and ancient DNA to create ‘proxy’ versions of extinct animals like the woolly mammoth, dodo, and thylacine. ...
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How do we weigh the ecological benefits of de-extinction against potential unforeseen risks of introducing engineered animals into modern ecosystems?
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Who should have authority over releasing de-extinct species—governments, scientists, Indigenous communities, or international bodies?
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If embryo selection and gene editing can drastically reduce disease risk, is it ethical for parents to decline these technologies for their children?
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How might large-scale de-extinction and artificial womb technology change traditional conservation strategies and the very definition of ‘wild’ nature?
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Transcript Preview
Just as a headline here, you're trying to fix global warming by bringing woolly mammoths back to life amongst a number of other extinct creatures, right?
(laughs) Well, I, I don't think that one company can fix global warming. I, I think that we are at the, you know, brink of a major biodiversity crisis, which will lead to ecosystem collapse, and, uh, restoring ecosystems like the Arctic tundra is something that, you know, we're very focused on. So, I hope that we are one of many people working on, uh, biodiversity loss and combating climate change, but, uh, I think it's maybe a little bold, uh, to say that we're, we are solving it ourselves.
I understand. Okay. So, somebody comes up to you at a cocktail party and says, "What do you do?" What is your answer for your day-to-day work?
So my, my general answer is, I say, "I'm in technology." If they dive deeper, I'm like, "Well, I'm in biotechnology." If they dive deeper, I, I tell 'em that we're working to bring back extinct species and preserve all life on Earth, and then it, and then it kind of unravels from there.
Right. Okay. Talk, talk to me about de-extinction, then. Like, what, what even is that?
Yeah, so de-extinction is, uh, not necess- not necessarily a new concept. Other, everything from books and movies and, and, and some other movements, uh, through, in the world have talked about the concept of de-extinction, and the way we view de-extinction is the de-extinction of core genes to build proxy species for, uh, genetics that have been lost, uh, to time, whether that was, you know, uh, due to solely, you know, climate change events, or towards, uh, or, or due to the fact of man's, uh, implications, right? And so, uh, fundamentally, we are de-extincting the core genes that make all of these species those unique species. And so recently, I was on a podcast where someone wanted to, uh, debate semantics over the dodo, and they, and they were like, "But sure, dodo is just gonna be a silly-looking pigeon," and I hated to inform them that a dodo was a silly-loo- looking pigeon. Dodos were pigeons, and so, uh, the things that made it a different flightless pigeon were the genes that were de-extincting. And so it, it definitely brings out, you know, different, uh, groups have different perspectives on, on the work that we're doing, but, but fundamentally, we're bringing back these lost species, uh, to, to increase biodiversity, and then we're using all those technologies for conservation, which is pretty cool.
Okay. Nuts and bolts, how the fuck do you bring a dead animal back to life? (laughs)
So you can't, you can't clone a, a, a, a, a dead animal. Uh, you, you don't have living cells. So what you have to do is you have to look for its closest living relative. So in the case of the mammoth, that's the Asian elephant. Mammoths are actually closer related to Asian elephants than Asian elephants are to African elephants, which is like, like that blew my mind when, when I learned that, 'cause I, I, uh, I was also the first to de-extinction when I was working on this. And what was interesting is you actually have to then go look at the DNA sequences, and so we actually had to s- assemble 54 mammoth genomes to build out kind of a reference genome that we could do all the comparative genomics to that of the Asian elephant, and they're about 99.6% the same genetically. And so then, and then in that difference of 0.4%, so a lot of genes, we then started to isolate, what are the genes that really made a mammoth a mammoth? You know, the domed cranium, the curved tusk, the shaggy coat, this extra fat layer, how they produce oxygen in subfreezing temperatures. And so we, we then had to spend a lot of time doing computational analysis to really understand that, and then we take and engineer those genes into that of an Asian elephant cell, then we go through the cloning process, kind of like what they did with Dolly the sheep back in the '90s, only it's way more efficient now and it uses, like, lasers and stuff like that, versus back in the '90s, they were kind of just jamming stuff together, which is weird, uh, but it kind of worked then. Now it actually really works 'cause it's, it's way more precise. Uh, and then you, and then you actually implant that embryo into the closest living relative, being the Asian elephant, uh, from a surrogacy perspective.
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