Science Weekly Is ‘de-extinction’ really possible?
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Apr 22, 2025 In this engaging discussion, Nicola Davis, Science correspondent at The Guardian, dives into the controversial world of de-extinction. She explores the recent claims of reviving the dire wolf and questions whether these wolves are truly extinct or just genetically modified. Nicola highlights the ethical dilemmas surrounding species revival and the challenges faced in dramatically altered environments. She also introduces innovative conservation projects like the 'poo zoo,' showcasing the fusion of genetic tech with traditional methods to save endangered species.
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Dire Wolves Are Gene-Edited Wolves
- Colossal Biosciences created genetically modified grey wolves with dire wolf genes, not true dire wolves.
- They edited 20 gene sites across 14 genes into grey wolf DNA, then implanted embryos into surrogates.
Limits of Recreating Extinct Species
- We lack comprehensive genomes and complete behavioral knowledge of extinct species like dire wolves.
- This limits our ability to recreate full extinct species and understand their ecological roles.
Ecological Risks of Hybrids
- Creating hybrids of extinct species poses risks if their ecological niche no longer exists.
- Ethical concerns arise about animal welfare and fitting these hybrids into current environments.