What are the key takeaways from this Radiolab episode?

Key insights include: **Fear exposure limits:** Spending time with professional exterminators Lakeisha Fulcher and Cedric Simmons reduced fear enough to observe roaches calmly in public spaces like Grand Central Station, but the effect collapsed entirely when a roach appeared in a familiar home environment — suggesting exposure therapy requires confronting the specific context triggering the fear response, not just the stimulus itself.; **Disgust as a category, not a fact:** Science writer Bethany Brookshire argues the label "pest" strips animals of inherent value and pre-authorizes any elimination method. Reframing animals as creatures that succeed near humans — rather than as objects to destroy — can interrupt the automatic disgust-to-action pipeline and create space for more considered responses to unwanted wildlife encounters.; **American cockroach origin:** The species Periplaneta americana is native to Africa, not the Americas. It arrived in North America aboard transatlantic slave ships, exploiting low sanitation conditions and wooden hull crevices. Understanding that the roach had no agency in its relocation reframes it as a displaced organism rather than an inherent urban invader, which can shift emotional responses.

What did Lou Sorkin and Lakeisha Fulcher discuss on Radiolab?

RadioLab reporter Alex Neeson documents her multi-month attempt to overcome a severe cockroach phobia through three escalating strategies: shadowing New York City exterminators, attempting to eat American cockroaches prepared by edible insect chef Joseph Yoon, and researching the species' history with entomologist Sammy Ramsey and science writer Bethany Brookshire. Key topics include: **Fear exposure limits:** Spending time with professional exterminators Lakeisha Fulcher and Cedric Simmons reduced fear enough to observe roaches calmly in public spaces like Grand Central Station, but the effect collapsed entirely when a roach appeared in a familiar home environment — suggesting exposure therapy requires confronting the specific context triggering the fear response, not just the stimulus itself.; **Disgust as a category, not a fact:** Science writer Bethany Brookshire argues the label "pest" strips animals of inherent value and pre-authorizes any elimination method. Reframing animals as creatures that succeed near humans — rather than as objects to destroy — can interrupt the automatic disgust-to-action pipeline and create space for more considered responses to unwanted wildlife encounters..

How long is this episode of Radiolab?

This episode is 36 minutes long. SignalCast provides an AI-generated summary so you can get the key insights in about 3 minutes.

Radiolab

This American Roach

May 29, 2026

36 min episode · 2 min read

Lou Sorkin,Lakeisha Fulcher,Cedric Simmons

Episode

36 min

Read time

2 min

Topics

Product & Tech Trends, Psychology & Behavior, Science & Discovery

AI-Generated Summary

Published Jun 25, 2026

Key Takeaways

✓Fear exposure limits: Spending time with professional exterminators Lakeisha Fulcher and Cedric Simmons reduced fear enough to observe roaches calmly in public spaces like Grand Central Station, but the effect collapsed entirely when a roach appeared in a familiar home environment — suggesting exposure therapy requires confronting the specific context triggering the fear response, not just the stimulus itself.
✓Disgust as a category, not a fact: Science writer Bethany Brookshire argues the label "pest" strips animals of inherent value and pre-authorizes any elimination method. Reframing animals as creatures that succeed near humans — rather than as objects to destroy — can interrupt the automatic disgust-to-action pipeline and create space for more considered responses to unwanted wildlife encounters.
✓American cockroach origin: The species Periplaneta americana is native to Africa, not the Americas. It arrived in North America aboard transatlantic slave ships, exploiting low sanitation conditions and wooden hull crevices. Understanding that the roach had no agency in its relocation reframes it as a displaced organism rather than an inherent urban invader, which can shift emotional responses.
✓Cockroach biology reframe: American cockroaches are naturally forest decomposers that eat leaf litter, decaying wood, and dead organic matter in tropical environments like the Congo Basin. They are compulsive self-cleaners, grooming antennae similarly to cats. Their association with filth is entirely a product of human infrastructure — sewer systems and street-level garbage — not the animal's inherent nature.
✓Inedibility as a defense mechanism: Chef Joseph Yoon, who regularly prepares crickets, ants, mealworms, and cicadas, found American cockroaches genuinely inedible even after sautéing with garlic and aromatics. Entomologist Sammy Ramsey explains the distinctive medicinal-sour odor functions as an active chemical deterrent — a biological warning signal evolved to discourage predation, making the roach's repulsiveness a measurable survival adaptation.

What It Covers

RadioLab reporter Alex Neeson documents her multi-month attempt to overcome a severe cockroach phobia through three escalating strategies: shadowing New York City exterminators, attempting to eat American cockroaches prepared by edible insect chef Joseph Yoon, and researching the species' history with entomologist Sammy Ramsey and science writer Bethany Brookshire.

Key Questions Answered

•Fear exposure limits: Spending time with professional exterminators Lakeisha Fulcher and Cedric Simmons reduced fear enough to observe roaches calmly in public spaces like Grand Central Station, but the effect collapsed entirely when a roach appeared in a familiar home environment — suggesting exposure therapy requires confronting the specific context triggering the fear response, not just the stimulus itself.
•Disgust as a category, not a fact: Science writer Bethany Brookshire argues the label "pest" strips animals of inherent value and pre-authorizes any elimination method. Reframing animals as creatures that succeed near humans — rather than as objects to destroy — can interrupt the automatic disgust-to-action pipeline and create space for more considered responses to unwanted wildlife encounters.
•American cockroach origin: The species Periplaneta americana is native to Africa, not the Americas. It arrived in North America aboard transatlantic slave ships, exploiting low sanitation conditions and wooden hull crevices. Understanding that the roach had no agency in its relocation reframes it as a displaced organism rather than an inherent urban invader, which can shift emotional responses.
•Cockroach biology reframe: American cockroaches are naturally forest decomposers that eat leaf litter, decaying wood, and dead organic matter in tropical environments like the Congo Basin. They are compulsive self-cleaners, grooming antennae similarly to cats. Their association with filth is entirely a product of human infrastructure — sewer systems and street-level garbage — not the animal's inherent nature.
•Inedibility as a defense mechanism: Chef Joseph Yoon, who regularly prepares crickets, ants, mealworms, and cicadas, found American cockroaches genuinely inedible even after sautéing with garlic and aromatics. Entomologist Sammy Ramsey explains the distinctive medicinal-sour odor functions as an active chemical deterrent — a biological warning signal evolved to discourage predation, making the roach's repulsiveness a measurable survival adaptation.

Notable Moment

When entomologist Sammy Ramsey revealed the American cockroach's slave-ship origin, reporter Alex Neeson confronted an unexpected collision between her personal roach phobia and the history of anti-Black racism — realizing she could not simply hate a bug without encountering the shadow of enslavement.

Know someone who'd find this useful?

Episode Transcript

RadioLab is supported by Alienware. Alienware Days of Deals is happening now with massive savings on the setups you need to win. Buy any Alienware PC and get 50% off on the AW twenty seven twenty five QF gaming monitor. Save big on the Area 51 desktop, Alienware Aurora 16 laptop, and the Alienware 15. These machines feature Intel Core Ultra processors to deliver serious speed and total reliability. Upgrade your game today at alienware.com/deals. WNYC Studios is supported by Wise. Wise, the smart way to manage the currencies you need around the world. With the Wise account, you can send, spend, and receive in up to 40 currencies with only a few simple taps. Be smart. Get wise. Download the Wyze app today. Terms and conditions apply. Hey, friends. Lulu here. I have been working in public radio for over twenty years. I feel so lucky to get to do this job, and this is a moment unlike any other. Nearly a year ago, Congress eliminated our federal funding, and so many of you stepped up to support RadioLab at that time. Thank you. Thank you from the bottom of our hearts. Thank you. But the truth is we just aren't out of the woods yet. There's no sign of federal funding coming back, and New York Public Radio, our home station, is currently facing an ongoing shortfall of nearly $3,000,000. And so I'm coming to you to ask for support. If you are one of those listeners who has never given, we see you, we make this for you, we don't want you to have to support it. But again, this is a moment that is really different. If you appreciate our weekly dollop of wonder, of stories that we hope make you see the world anew, that give you some dinner party fodder or just some quiet escape, please consider supporting us by joining the lab. And in return, we will ship you a fan favorite t shirt with the design of a Pro Tools session on the front, you know, with little sound waves kind of layered on top. It is peak sound nerd, but the audio ain't peaking. Little sound joke for you there. Anyway, for real, I am so proud that Radio Lab is a show on public radio. We are not beholden to any institution. We can report on anyone from Facebook to the government to, you know, the secret underwater sex lives of aquatic animals that they don't necessarily want us to know about. We go there. We are beholden to no one but you. So we're asking you, be the public in public radio, join the lab for the t shirt, the other perks like bonus content and sponsor free episodes, or just do it to keep the show going. To join the lab and see the t shirt and check everything out, just go to radiolab.org/join, or you just text the word lab to the number 83763 to make your …

Get the full transcript (6,613 words) + summary by email — free

One-time email with the complete transcript and AI summary of this episode. No account needed.

One email, no spam. We’ll also show you what SignalCast does.

Browse all Radiolab transcripts →