Colossal Biosciences, a company at the forefront of de-extinction efforts, has announced a significant development in its quest to bring back the moa, a gigantic flightless bird that roamed New Zealand until its extinction centuries ago. The company claims to have successfully developed artificial eggshells, a technology it believes is essential for incubating the large eggs required for moa replication.
This latest announcement follows Colossal Biosciences' previous claims regarding the potential resurrection of other extinct species, including the dire wolf. The development of artificial eggshells is presented by the company as a critical hurdle overcome, addressing the logistical challenge of housing and protecting a developing moa embryo, given the immense size of the original moa eggs.
However, independent scientific experts have expressed considerable scepticism regarding the implications of this development. While acknowledging the technical achievement of creating artificial eggshells, many in the scientific community argue that this is a relatively minor component in the vast and intricate challenge of de-extinction. The process of bringing back an extinct species involves not only creating a viable embryo but also ensuring its successful development, hatching, and subsequent survival, along with establishing a sustainable population.
The moa, which included several species, some standing up to 3.6 metres tall and weighing over 230 kilograms, became extinct around the 15th century, primarily due to hunting by early Māori settlers. Its reintroduction, even if scientifically possible, would present immense ecological and ethical considerations, including habitat availability and potential impacts on existing ecosystems.
Critics highlight that the genetic material required for a complete moa genome, the complexities of embryonic development, and the environmental conditions necessary for raising such a large bird are far more significant obstacles than merely producing an artificial shell. The announcement, while generating headlines, underscores the vast gap between laboratory achievements and the practical reality of de-extinction.