About this episode
The episode explores the concept of microbes holding grudges and their interactions in the gut.
What the if microbes held a grudge? We're thrilled to welcome Ethan Rappaport, theoretical ecologist at the University of Maryland, to take us inside the tiny turf wars happening in your gut. We imagine bacteria sharing grudges like social media reposts, passing weaponized DNA to their neighbors through tiny genetic pamphlets called plasmids. Before you know it, whole microbial nations could be declaring war on your intestinal lining until you hand over the cotton candy. So maybe skip the diet and keep those gut buddies happy! —— When she's not studying zombie fungus at Harvard or helping us break the universe every week, our very own Gaby Paniccia writes science fiction. Her short story "The Automatic Grocery Store" is now featured on the popular podcast Escape Pod! Listen here: https://escapepod.org/2026/02/19/escape-pod-1033-the-automatic-grocery-store/ —— Check out our membership rewards! Visit us at Patreon.com/Whattheif —— Got an IF of your own? Want to have us consider your idea for a show topic? Send YOUR IF to us! Visit https://whattheif.com/contact and let us know what's in your imagination. No idea is too small, or too big! Keep On IFFin', Philip, Matt & Gaby
People in this episode
Hosts: Philip Shane, Matt
Guest: Ethan Rappaport
Topics covered
- microbes
- ecology
- gut health
- bacteria
- genetics
- science fiction
Keywords
- microbes
- gut bacteria
- plasmids
- ecology
- genetic warfare
- diet
- science fiction
Mentioned in this episode
Organizations: University of Maryland, Harvard, Escape Pod
Books & works: The Automatic Grocery Store
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