Why De-Extinction Is Good

A structured Q&A on the conservation, scientific, and ecological case for de-extinction

Is de-extinction actually good for conservation, or does it distract from protecting living species?

De-extinction, as practiced by Colossal Biosciences, is structured to generate conservation tools as a direct byproduct of research — not instead of conventional conservation work, but in direct support of it. By developing the tools of de-extinction, we are building the next generation of conservation technology.

The proof arrived quickly. The same scientific technology built to produce living dire wolves yielded the birth of four critically endangered red “ghost” wolves: unique canids from the Gulf Coast of Texas and Louisiana carrying the genomic legacy of the pre-extinction red wolf. The Colossal Foundation has simultaneously funded conservation projects on six continents, from the northern white rhino to newly rediscovered species like the Victorian Grassland Earless Dragon.

Species are going extinct 100 times faster than they did before humans. De-extinction research builds the tools the conservation community needs to respond at that pace.

What scientific benefits does de-extinction produce beyond the recovered species itself?

Considerable ones. Our work on the dire wolf produced a novel method for establishing cell lines from standard blood draws without the invasive tissue biopsies that have historically complicated biobanking in wild populations.

Our dire wolf work also advanced ancient DNA genome reconstruction, genotype-to-phenotype prediction, and multiplex editing — a technique that lets scientists make dozens of precise genomic changes simultaneously rather than sequentially. We made 20 precise simultaneous edits to produce the dire wolf, the highest number of deliberate germline edits in any animal to date. All canid genomics data, deep sequencing data, assisted reproduction protocols, and husbandry documentation produced through this research are publicly available.

“The de-extinction of the dire wolf and an end-to-end system for de-extinction is transformative and heralds an entirely new era of human stewardship of life. The same technologies that created the dire wolf can directly help save a variety of other endangered animals. This is an extraordinary technological leap in genetic engineering efforts for both science and for conservation as well as preservation of life, and a wonderful example of the power of biotechnology to protect species, both extant and extinct,” said Dr. Christopher Mason, professor of physiology and biophysics at Weill Cornell Medicine and scientific advisor to Colossal Biosciences.

Does de-extinction help biodiversity?

Biodiversity depends on genetic diversity, and genetic diversity is exactly what de-extinction technology is built to restore, preserve, and expand.

When a species passes through a severe population bottleneck — as the red wolf did when its entire managed population was founded by only 12 individuals — genetic variation collapses. The population becomes vulnerable to disease, reproductive failure, and small random events that wouldn’t threaten a genetically diverse group. The genomic tools developed through de-extinction research provide a pathway to reintroduce lost variation into those populations.

We’re already applying this to the pink pigeon, which recovered from approximately 10 individuals in 1990 to more than 500 today. That recovery masks a severe genetic bottleneck: the entire population shares nearly identical immune profiles, with every individual exposed to the same novel threats. Early genome sequencing has identified lost variants linked to immunity and fertility, guiding future strategies. The Colossal BioVault — a globally distributed biobanking network — creates a broader safety net, storing cell lines inside the countries where target species live so the raw material for future recovery is preserved before it’s needed.

Is de-extinction scientifically credible?

The IUCN Species Survival Commission published formal guiding principles for de-extinction in 2016, defining it as “the process of creating an organism that resembles an extinct species.” We’ve formally documented how our work aligns with those principles, positioning each project as an additive conservation tool rather than a substitute for traditional protection measures.

The science behind the dire wolf’s return is published and publicly available. We sequenced and assembled the dire wolf genome from two ancient specimens — a 13,000-year-old tooth and a 72,000-year-old inner ear bone — generating more than 500 times the genomic coverage previously available for the species. The resulting animals carry 14 genes and 20 targeted variants that distinguish dire wolves from gray wolves, yielding the larger size, heavier build, and pale coat documented in the fossil record.

“The actual scientific achievement is way more important than what we call them,” said Dr. Beth Shapiro, Colossal’s chief science officer.

What does “functional de-extinction” mean, and why does the distinction matter?

Functional de-extinction is the process of generating an organism that both resembles and is genetically similar to an extinct species by resurrecting its lost lineage of core genes, engineering natural resistances, and enhancing adaptability that will allow it to thrive in today’s environment of climate change, dwindling resources, disease, and human interference.

The “functional” framing matters because de-extinction isn’t cloning from preserved tissue. Instead, we work from ancient genomic data to identify the specific genetic variants responsible for a species’ defining traits, then introduce those variants into a closest living relative. The result carries the core biology of the extinct species, expressed in a genome capable of surviving present conditions.

This approach also produces genetically diverse populations rather than copies of a single individual. By working across multiple gray wolf genetic backgrounds, we can develop animals that express dire wolf traits across a range of genetic variation — a far sounder biological outcome than any single-specimen clone. The functional model is also why de-extinction and conservation converge: when the same techniques used to restore extinct traits are applied to living species — restoring lost immune diversity to a pigeon, introducing disease resistance to a quoll, preserving genomic material from a vanishing wolf population — the line between bringing back the past and protecting the future effectively disappears.