Huberman LabBringing Extinct Species Back to Life | Dr. Beth Shapiro
At a glance
WHAT IT’S REALLY ABOUT
De-extinction explained: engineering mammoths, dire wolves, and conservation biotech
- Dr. Beth Shapiro explains why “species” is a flexible human label, and how genetics and hybridization (e.g., Neanderthal–human admixture) complicate simplistic taxonomy.
- She outlines the technical reality of de-extinction: dinosaurs are off-limits due to DNA decay, while mammoths and other recently extinct animals are plausible because usable ancient DNA exists and close living relatives provide a genomic starting point.
- Colossal’s strategy focuses on engineering key extinct traits into a living relative (rather than cloning an exact replica), illustrated by the dire wolf project using a limited set of targeted edits guided by fossil genomes and modern safety considerations.
- The conversation ties de-extinction to broader conservation and medicine, arguing that the same genome-engineering toolkit can prevent extinctions, restore genetic diversity, and even inspire breakthroughs like bespoke gene therapies.
- Shapiro and Huberman explore ethical and governance issues—who decides, how to model ecological impact (including AI “digital twins”), and why transparent public education and local advisory panels are essential.
IDEAS WORTH REMEMBERING
5 ideas“Species” is a human-made category, not a rule biology obeys.
Shapiro emphasizes that multiple “species concepts” exist (biological, genetic, geographic, etc.), and which one you choose depends on the question you’re trying to answer. This matters directly for de-extinction because engineered animals won’t fit neatly into a strict genetic-threshold definition.
Hybridization is common in evolution—including in humans—and reshapes how we interpret lineage boundaries.
Ancient DNA has shown that Homo sapiens interbred with Neanderthals (and that Neanderthals and Denisovans interbred), undermining a simplistic “separate species can’t breed” framing. She notes most humans carry ~2–5% Neanderthal DNA, but it’s different segments in different people, enabling reconstruction of much of the Neanderthal genome from living humans.
De-extinction is closer to “trait restoration” than literal resurrection of an identical past animal.
Colossal’s approach is not to rebuild a perfect genetic copy, but to identify mammoth/dire wolf traits that are shared across ancient genomes and differ from the closest living relative, then engineer a limited set of functionally meaningful edits into a modern genome. The end goal is an organism that looks/behaves/operates ecologically like the extinct form, while being viable in today’s world.
Engineering extinct traits requires modern safety constraints, not just copying ancient variants.
Shapiro explains how Colossal sequenced fossil dire wolf genomes, identified changes tied to size/robustness/coat traits, and made ~20 targeted edits in a gray wolf genome. She highlights a safety-first strategy: if an extinct variant risks harmful side effects on a modern genetic background (e.g., albinism-linked pathways), they use alternative edits known to be safe in living canids.
The same synthetic biology stack can both revive lost traits and prevent near-term extinctions.
She argues de-extinction toolchains (multiplex editing, cell engineering, cloning-like approaches, developmental biology, etc.) also enable “genetic rescue” for living species—e.g., editing northern quolls to tolerate cane toad toxin, cloning red wolves to restore lost diversity, or improving black-footed ferret resilience.
WORDS WORTH SAVING
5 quotesBiology doesn't care what species you are. Species is a, a human concept. We have this incredible proclivity to want to put things into boxes so that we can talk about them.
— Dr. Beth Shapiro
Doing nothing is not not deciding. Doing nothing is saying we accept the fact that we are going to have a future that is less bio diverse than the present.
— Dr. Beth Shapiro
So our dire wolves, they have 20 edits that we picked, and we sequenced genomes from fossil dire wolves. We learned from those genomes what genetic changes made those animals bigger, more robust, light-colored in coat, and then we engineered those changes into a gray wolf genome to recreate the dire wolf.
— Dr. Beth Shapiro
I often get the question of, "Why are you thinking about bringing extinct species back to life? Why aren't you thinking about helping living species not become extinct?" And the answer is, we are doing both.
— Dr. Beth Shapiro
We are facing a future that I think is really exciting and spectacular. Maybe a little bit scary, but I think as long as we keep talking about it and having conversations about it way before it's possible, we can get to a place that people are comfortable with and people are excited about.
— Dr. Beth Shapiro
High quality AI-generated summary created from speaker-labeled transcript.
