Bringing Extinct Species Back to Life | Dr. Beth Shapiro
Summary
Dr. Beth Shapiro discusses the science and ethics of de-extinction, explaining how ancient DNA and gene editing can recreate species like the dire wolf and woolly mammoth. She clarifies that these efforts are not just about nostalgia but serve as a technological foundation for conserving living endangered species. The conversation also explores evolutionary biology, including the definition of species, Neanderthal admixture in modern humans, and the ecological roles of large herbivores in stabilizing ecosystems.
Topics discussed
Introduction to de-extinction and ancient DNA
Taxonomy, species concepts, and bison vs buffalo
Neanderthal-human hybridization and ancestry
Sponsor break and genetic similarity discussion
Hybridization in bears and reproductive isolation
Dog breeding history and the bulldog example
Neanderthal genes in modern humans and health
Ancient DNA, plague, and eye color evolution
Ethics of de-extinction and DNA preservation limits
Ecological drivers for mammoth and dire wolf return
Sponsor break and synthetic biology for birds
Dodo bird, parthenogenesis, and sex determination
Mammoth genome, elephant relatives, and species definition
Creating the dire wolf from gray wolf genome
Current dire wolf status and evolutionary biology mysteries
Regulation, invasive species, and ecosystem redundancy
Reintroduction impacts and technology for conservation
Sponsor break and gene drives for invasive species
Public perception, ethics, and the He Jiankui case
Human genetic selection, height, and AI parallels
Black-footed ferrets, inbreeding, and cloning
Media attention, modeling risks, and delivery methods
Future applications, education, and specialist focus
Red wolves, team structure, and science communication
Guest's origin story and transition to ancient DNA
Dinosaurs, mammoths, and closing remarks
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