Sources detail the scientific, ethical, and logistical dimensions of de-extinction, with a primary focus on the biotechnology firm Colossal Biosciences. By leveraging CRISPR gene-editing and advanced reproductive technologies, researchers aim to revive functional proxies of lost species like the woolly mammoth and dodo. They highlight recent technical milestones, including the successful cultivation of pigeon primordial germ cells, while documenting over half a billion dollars in private investment. Beyond the laboratory, the articles examine the ecological rationale for these projects, such as using megaherbivores to combat Arctic permafrost melt. However, there are ethical controversies surroun ...