The De-Extinction Debate: Can Science Resurrect Lost Species?
In an unassuming brick building within a Dallas business park, a company valued at $10.2 billion is tackling one of humanity's most profound questions: can and should we resurrect animal species that have been extinct for thousands of years? Colossal Biosciences, backed by investors including celebrities like Tiger Woods and Paris Hilton, has ignited both acclaim and denunciation with its ambitious de-extinction projects.
Technological Ambitions and Moral Obligations
Colossal Biosciences made headlines last year by declaring it had made the dire wolf, extinct for over 10,000 years, "de-extinct" through the birth of three hybrid pups. The company plans to revive the woolly mammoth within two years, followed by the iconic dodo. Using ancient DNA from fossils and Crispr gene-editing technology, Colossal draws easy comparisons to Jurassic Park, a reference CEO Ben Lamm embraces.
"I don't mind the Jurassic Park comparison because we get it a lot," said Lamm, 44, whose office features statues of a mammoth and brontosaurus. He noted that the film introduced many to DNA science, despite its dystopian themes. Lamm argues that the current extinction crisis, driven by human actions, creates a "moral obligation" to act, and Colossal's work helps engage the public in conservation and science.
The Science Behind the Scenes
At Colossal's 55,000-square-foot lab in Dallas, scientists in white coats isolate ancient DNA and edit genomes of closely related living species. For the dire wolf project, 14 out of 19,000 gray wolf genes were modified to produce snow-colored, larger, and cold-resistant hybrids. However, challenges vary by species: resurrecting the thylacine, extinct since 1936, may require over a million gene edits due to its distant relative, the fat-tailed dunnart.
Birds pose even greater difficulties, as they cannot be cloned like mammals. Colossal is attempting to revive the dodo and the moa by cultivating primordial germ cells from pigeons and emus, respectively, with scientists carefully working on eggs in specialized incubators.
Criticism and Controversy
Despite praise, some scientists dismiss Colossal's efforts as hype. Vincent Lynch, an evolutionary developmental biologist at the University at Buffalo, argues that creating genetically modified gray wolves does not equate to resurrecting dire wolves. "You can't put a mutation into a related species and call that thing the extinct thing," he said, labeling Lamm a "tech bro" with unrealistic solutions.
Critics also worry about ecological impacts. Introducing species like mammoths, extinct for 10,000 years, could disrupt modern ecosystems. Julie Meachen, a paleontologist, warns that mammoths near human settlements might cause conflicts, while Victoria Herridge of the University of Sheffield expresses shock at using elephants as surrogates.
Ethical and Conservation Concerns
There are fears that de-extinction could undermine existing conservation efforts. Doug Burgum, Trump's interior secretary, suggested that species revival might reduce urgency to protect habitats, creating a "moral hazard." Lynch compares this to geoengineering risks in climate policy. Lamm counters that Colossal emphasizes habitat preservation and sees technology as a supplement, not a replacement, for traditional conservation.
Beth Shapiro, Colossal's chief scientist, acknowledges pushback but focuses on the technology's potential to aid endangered species, such as boosting genetic diversity in red wolves or developing vaccines for Asian elephants. She states, "If you're not controversial, you're not pushing hard enough," highlighting the need for innovative approaches amid biodiversity loss.
Broader Implications and Future Directions
Beyond de-extinction, Colossal aims to apply its gene-editing tools to conservation challenges, like making quolls resistant to invasive cane toad toxins. The company has spawned spin-offs targeting plastic pollution and national security, indicating a wider financial strategy. Meachen notes that while de-extinction captures public imagination, the real value lies in preserving genetic diversity for struggling species.
For now, Colossal's dire wolf pups, named Romulus, Remus, and Khaleesi, symbolize the wonder of its mission, even as debates over species definition and ecological ethics continue to rage. As Lamm puts it, "In every aspect of life, you got A teams and B teams," reflecting the polarized reactions to this groundbreaking work.
