Science Friday and WNYC Studios
20 May 2026
The herbicide paraquat is so toxic it’s banned in over 70 countries. But its use in the U.S. is growing, despite known links to Parkinson’s disease. In southeastern Mississippi, an industrial plant is leaking tens of thousands of pounds of the chemical into the air. Environmental reporter Delaney Nolan and epidemiologist Beate Ritz join Host Flora Lichtman to discuss the implications of this leak, and what we know about how paraquat affects the body. Guests: Delaney Nolan is an environmental reporter based in New Orleans. She reported this story for The Lens and the Mississippi River Basin Ag & Water Desk. Dr. Beate Ritz is a professor of epidemiology at UCLA in Los Angeles. Other episodes you may enjoy: Teasing Apart The Causes And Early Signs Of Parkinson’s Workout Worms May Reveal New Parkinson’s Treatments Want SciFri gear? Check out our new shop! 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: 877-4-SCIFRI Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
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