Swords, cannibalism, poison: inside the world of killer microbes episode artwork

EPISODE · Jun 18, 2026 · 21 MIN

Swords, cannibalism, poison: inside the world of killer microbes

from Science Friday · host Flora Lichtman, Rasha Aridi, Glen D’Souza

There is a murderous crime spree happening right under—and perhaps inside—our noses. Killer microbes armed with weapons are eviscerating, assassinating, and detonating their fellow microbes. And the newest culprit? A protist that morphs into a cannibilastic supergiant when times get tough.  Host Flora Lichtman talks with Glen D’Souza and Ben Larson, two detectives who study these micro-murders. They chat about why microbes kill, how they choose their victims, and whether we can harness those weapons for good.  Guests: Dr. Glen D’Souza is a microbiologist and assistant professor at Arizona State University in Tempe.  Dr. Ben Larson is an assistant professor and cell biologist at Rensselaer Polytechnic Institute in New York.  Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Episode metadata supplied by the publisher feed · Published Jun 18, 2026

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Some microbe species have evolved to stab, bomb, cannibalize, or poison each other. Can we harness their weapons for good?

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Swords, cannibalism, poison: inside the world of killer microbes

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