This episode explores the revolutionary potential of gene editing and de-extinction, focusing on Colossal Biosciences' work in bringing back extinct species and the broader implications for conservation and human health. The conversation begins with an overview of CRISPR technology, DNA synthesis, and multiplex editing, highlighting the breakthrough of making multiple edits to the genome simultaneously, as demonstrated by Colossal's woolly mouse project. Against the backdrop of these technological advancements, the discussion pivots to the company's ambitious projects, including the creation of genetically engineered dire wolves and the synthesis of large DNA blocks for the thylacine project. More significantly, the episode delves into the challenges and possibilities of creating a universal egg and artificial wombs, which could revolutionize conservation efforts by enabling the scalable reproduction of endangered species. As the discussion progresses, ethical considerations are raised, particularly regarding the application of gene editing technologies to humans, with the guest emphasizing Colossal's focus on animal conservation and the potential for licensing technologies for human healthcare applications. The episode concludes with a reflection on the inevitability of genetic selection and editing, and the importance of ethical standards and informed decision-making in navigating this rapidly evolving field, underscoring the potential for data-driven approaches to improve human health and conservation efforts.