On Friday, July 29, Dr. Charles Benbrook took the stand, the last witness to testify on behalf of the plaintiff in the trial of Dewayne Johnson vs. Monsanto Co.

Benbrook is an agricultural and toxicology scientist, a Harvard graduate and former executive director of the National Academy of Sciences. Since 2000, he has studied the link between glyphosate, the key active ingredient in Monsanto’s Roundup herbicide, and non-Hodgkin’s lymphoma, the type of cancer Dewayne “Lee” Johnson, a former school groundskeeper who was required to use Roundup, now has.

Robert F. Kennedy, Jr., who has been providing OCA with first-hand accounts of the trial, reported that Benbrook told the jury that Monsanto had repeatedly killed internal company studies suggesting that Roundup is carcinogenic. And when a study mandated by the U.S. Environmental Protection Agency (EPA) showed clear evidence of glyphosate’s carcinogenicity, the company bullied and bamboozled the EPA to withdraw it.

Benbrook also testified that our Monsanto-friendly EPA’s focus on glyphosate alone is a sham, intended to gloss over the more important question of “whether the Roundup formulation itself, not just a single ingredient, is toxic and carcinogenic.” He told the court that Monsanto uses a potent surfactant that dramatically amplifies Roundup’s toxicity.

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