Colossal Biosciences, a pioneering biotechnology company based in Dallas, is at the forefront of a controversial movement to resurrect extinct species, including the dodo and woolly mammoth. With a valuation exceeding £8 billion, the organisation has ignited both excitement and scepticism in the scientific community. Critics question the ethical and ecological implications of such ambitious projects, while proponents argue that these efforts are crucial in addressing the current extinction crisis.
A New Era of De-extinction
Colossal Biosciences has gained widespread attention for announcing that it successfully “de-extincted” the dire wolf, a species that vanished over 10,000 years ago, by birthing three genetically altered pups. The company plans to replicate this success with the woolly mammoth within the next two years, followed by the iconic dodo, which disappeared from the earth nearly 400 years ago. Ben Lamm, CEO of Colossal, describes this undertaking as a “moral obligation” in light of the ongoing biodiversity crisis, where species are disappearing at alarming rates due to human activity.
“Our work helps to engage the public in conservation and science,” Lamm explains, acknowledging the mixed reactions to their ambitious projects. The company’s headquarters spans 55,000 square feet and features a blend of advanced laboratories and engaging displays, such as an animatronic dire wolf, which exemplifies their commitment to both education and innovation.
The Science Behind De-extinction
At the core of Colossal’s mission is the use of advanced gene-editing technologies, particularly CRISPR, to isolate ancient DNA from fossils and modify the genomes of living relatives. For instance, the dire wolf pups were created by editing 14 genes in the grey wolf genome to produce traits such as increased size and cold resistance.
The complexities of resurrecting other species, such as the thylacine (Tasmanian tiger), pose significant challenges. The thylacine’s closest living relative, the fat-tailed dunnart, requires extensive genetic modifications—potentially involving over a million edits—to recreate the extinct marsupial’s characteristics. Similarly, the dodo’s revival hinges on cultivating primordial germ cells from its closest relative, the pigeon, while efforts to revive the moa involve incubating eggs from the emu, its nearest living counterpart.
Criticism and Ethical Considerations
Despite the excitement surrounding these projects, Colossal Biosciences faces backlash from some scientists who argue that the company’s approach lacks scientific rigor. Critics contend that creating genetically modified versions of extinct species does not equate to true de-extinction. Vincent Lynch, an evolutionary developmental biologist at the University at Buffalo, articulates the concern: “You can’t just modify a related species and call it the same thing. That’s a misrepresentation of what we understand about species.”
This criticism raises profound questions about the definition of a species itself and highlights the risks of assuming that resurrected animals will behave as their historical counterparts did. There are concerns that the introduction of de-extinct species into current ecosystems could lead to unforeseen consequences, especially given that ecosystems are dynamic and have evolved since these animals roamed the earth.
The Future of Conservation
Colossal’s work has broader implications for conservation. The technologies developed for de-extinction could be leveraged to enhance genetic diversity in endangered species, combat invasive species, and even develop vaccines for diseases threatening wildlife populations. However, Lamm acknowledges that the primary goal should not solely focus on resurrecting iconic animals but also on preserving existing biodiversity.
The potential for Colossal’s technologies to serve as a “gateway” for next-generation conservation tools is significant, yet it is accompanied by the risk of diminishing the urgency to protect habitats and species currently on the brink of extinction. Critics warn that the notion of “bringing species back” could create a moral hazard, undermining conservation efforts for those species still surviving.
Why it Matters
Colossal Biosciences represents a bold and potentially transformative approach to conservation that could reshape our understanding of extinction and biodiversity. While the excitement around resurrecting iconic species captures public imagination, the ethical considerations and ecological implications of such actions require careful scrutiny. As the world grapples with unprecedented rates of extinction, the balance between innovation and responsibility will be crucial in determining the future of our planet’s ecosystems. The outcomes of Colossal’s projects may not only define the potential for de-extinction but could also redefine what it means to conserve and protect our natural world.
