13 Mar 2026
42m

Return of the Flesh-Eaters

Podcast cover

Radiolab

The episode explores the history and potential future of screwworm eradication, focusing on the ethical implications of species extinction. It traces the development of the sterile insect technique by Edward Knipling, which successfully eliminated screwworms from North and Central America, and the current resurgence of the parasite. The discussion covers the economic impact on the cattle industry and the potential threat to human health, prompting a debate on whether to use gene drive technology to permanently eradicate the species. An ethicist, Greg Kaepnick, shares insights from a panel of experts who considered the ecological and intrinsic value of screwworms, ultimately leaning towards eradication due to the horrific nature of the infestation and limited ecological role. The potential for de-extinction is also considered.

Outlines

Part 1: The Parasite and the Pioneer

Part 2: Innovation and Eradication Success

Part 3: Resurgence and Modern Threats

Part 4: Ethics and Future Outlook

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