Roundup: The Controversial Weedkiller Sprayed Throughout California Forests episode artwork

EPISODE · Apr 29, 2026 · 54 MIN

Roundup: The Controversial Weedkiller Sprayed Throughout California Forests

from KQED's Forum · host KQED

The Supreme Court this week heard a case about Roundup, a weedkiller widely used in agriculture — and that tens of thousands claim has caused their cancer. Now a new investigation from Mother Jones reveals that Roundup is used across California by the US Forest Service and Cal Fire. While Bayer, Roundup’s parent company, claims the chemical’s safety is backed up by extensive research, the investigation calls into question data behind these claims. We look at what’s known about the health impacts of Roundup, how it’s used for fire recovery and why it’s causing a rift in Trump world. Guests: Nate Halverson, senior reporter and producer, The Center for Investigative Reporting who reported on Roundup for Reveal and Mother Jones Patrick Thomas, reporter, The Wall Street Journal Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode metadata supplied by the publisher feed · Published Apr 29, 2026

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Roundup: The Controversial Weedkiller Sprayed Throughout California Forests

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