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While it may be creepy to read an industry-funded dossier on you online, it pales in comparison to what other pesticide industry critics have faced.
As I head back from Cali, Colombia after attending the Convention on Biological Diversity this week, I’ve been thinking a lot about the attempts by countless advocates around the world to take on one of the biggest drivers of biodiversity collapse: toxic pesticides. Reducing the use of pesticides is one of the key ways we can help beneficial insect species rebound, protect vital pollinators, ensure thriving aquatic ecosystems, and much more—all while protecting human health.
With all that we know about the benefits to biodiversity of reducing pesticides, why haven’t we made more progress in tackling these toxic substances? The latest clue came to us last month thanks to an investigation by Lighthouse Reports, which revealed that the Trump administration had used taxpayer dollars to fund a pesticide industry PR operation targeting advocates, journalists, scientists, and UN officials around the world calling for pesticide reforms.
The investigation exposed the details of a private online social network, funded by U.S. government dollars, with detailed profiles of more than 500 people—a kind of Wikipedia-meets-doxxing of pesticide opponents. It showed how the network was activated to block a conference on pesticide reform in East Africa, among other actions.
My interest in the leaked private network is also personal: I’m one of those profiled, attacked for working on numerous reports, articles, and education campaigns on pesticides. In my dossier, I’m described among other things as collaborating on a campaign alleging pesticide companies “use ‘tobacco PR’ tactics to hide health and environmental risk.” Guilty as charged. While it may be creepy to read an industry-funded dossier on you online, it pales in comparison to what other pesticide industry critics have faced.
When you don’t have science on your side, you have to rely on slime.
There’s Dr. Tyrone Hayes, the esteemed UC Berkeley professor, who has persevered through a yearslong campaign to destroy his reputation by the pesticide company Syngenta whose herbicide atrazine Hayes’s exacting research has linked to endocrine disruption in frogs. There’s journalist Carey Gillam who faced a Monsanto-funded public relations onslaught for raising substantive questions about the safety of the company’s banner herbicide product, Roundup. There’s Gary Hooser, former Hawaii State Senator and Kauaʻi County Councilmember who weathered a barrage of industry attacks for his advocacy for common sense pesticide reform—a barrage so effective he lost his seat in office. The list goes on.
Why develop elaborate attacks on journalists and scientists raising serious concerns about your products? It’s simple: When you don’t have science on your side, you have to rely on slime.
This latest exposé does not surprise me, of course, nor many colleagues who are also listed in this private online network. I’ve been tracking industry disinformation and its attacks on those working to raise the alarm about the environmental and human health impacts of pesticides for decades: this is what companies do. They try to defame, marginalize, and silence scientists, journalists, and community advocates who raise concerns about the health harms of their products.
Growing up, I saw this up close. My father, the toxicologist and epidemiologist Marc Lappé, was a professor of medical ethics and a frequent expert witness in legal cases where chemicals were a concern. He died at age 62 of brain cancer. By the time he passed away, I had heard countless tales of his legal wranglings in depositions and on the stand. Cases where he served as an expert witness for lawsuits on behalf of people harmed by exposure to dangerous chemicals, lawsuits against some of the biggest chemical companies in the world.
Thanks to this investigation, we now have another example of how the pesticide industry tries to shift attention away from these very real concerns, even using taxpayer dollars to do it.
The defense attorney’s strategy with my father was always the same: undermine his expertise, rattle his equanimity so juries would trust well-paid lawyers, not my dad. There was the time they quoted an excerpt of one of his journal articles to make it sound like he was contradicting himself, which backfired when he asked the lawyer to read for the jury the rest of the paragraph, putting the words in context and solidifying his point. The worst story was from a trial not long after my stepmother died in a tragic accident, leaving behind my three younger half-siblings. As my dad walked to the stand, one of the defense lawyers said under his breath, “Marc, how was Mother’s Day at your house this year?” Slime indeed.
But while they have the slime, we have the science: We know that many of the pesticides now ubiquitous in industrial agriculture are linked to serious health concerns, from ADHD to infertility, Parkinson’s, depression, a swath of cancers, and more. The insecticide chlorpyrifos is so toxic there are no determined safe levels for children or infants. Paraquat, linked to Parkinson’s, is so acutely deadly a teaspoon of the stuff can kill you—something its largest producer, Syngenta, has known for decades. And, 2,4-D, the defoliant used in the Vietnam War to wipe out forest cover in that country has been linked to birth defects among children there—and in the United States—even decades after the war.
The threat for biodiversity is severe, too. A 2019 comprehensive review of more than 70 studies around the world powerfully tied widespread pesticide use to insect declines worldwide. And, as reported in the Pesticide Atlas (I edited the U.S. edition), despite these known risks, pesticide use is increasing in many regions in the world. In South America, pesticide use went up 484 percent from 1990 to 2017. In Brazil, alone, pesticide sales have shot up nearly 1000% between 1998 and 2008
Thanks to this investigation, we now have another example of how the pesticide industry tries to shift attention away from these very real concerns, even using taxpayer dollars to do it. As I land in Colombia, where tens of thousands are gathered to envision a world conducive to thriving biodiversity, I hope this reporting will remind policymakers to rely on science, not spin.
"With the new formulations of Roundup, Bayer had the opportunity to make us safer, but it did the opposite," one expert said.
Facing tens of thousands of lawsuits after it acquired Monsanto, Bayer promised to remove cancer-linked glyphosate from its commercial Roundup weed killers by 2023. But an analysis published by Friends of the Earth on Tuesday reveals that the replacement is even more dangerous.
The environmental group found that many residential Roundup products still do contain glyphosate, and those that don't have replaced it with a chemical cocktail that is 45 times more toxic to human health following long-term exposure.
"With the new formulations of Roundup, Bayer had the opportunity to make us safer, but it did the opposite," Kendra Klein, deputy director of science for Friends of the Earth, said in a statement. "Bayer's willingness to deceive the public and disregard our health as it continues to cash in on the Roundup brand name is outrageous."
"In short, the new Roundup is not the old Roundup—it's worse."
Roundup weed killer was first commercially released by Monsanto 50 years ago. Since then, tens of thousands of people say they have come down with Non-Hodgkin lymphoma after repeated use of the product and its active ingredient glyphosate, which the World Health Organization's International Agency for Research on Cancer says is "probably carcinogenic to humans." Despite the risk, it is so widely used that it has been found in 80% of a test of U.S. urine samples.
"The human toll of Roundup is enormous—tens of thousands of people have lost their lives and their health because of this toxic weed killer," Klein said.
In response to both legal challenges and popular pressure, Bayer announced in 2021 that it would remove glyphosate from residential Roundup sold in the U.S. within two years.
To track how well Bayer kept that promise, Friends of the Earth assessed the Roundup products for sale at Lowe's and Home Depot—the largest home and garden stores in the U.S.—between June and October of 2024.
It found that seven of the Roundup products for sale still contained glyphosate, while the eight that did not used chemicals "of dramatically greater concern."
Bayer has replaced glyphosate with a combination of four chemicals—fluazifop-P-butyl, triclopyr, diquat dibromide, and imazapic—the latter two of which are banned in the European Union. All four chemicals are even more dangerous to health than glyphosate on average following chronic exposure, according to the Environmental Protection Agency's (EPA) analysis of safety studies. The new ingredients have been linked to kidney and liver damage; reproductive, birth, and development problems; and allergic reactions or irritation that impact the eyes, skin, and respiratory system.
While all four are toxic, one stands out: Diquat dibromide is 200 times more toxic than glyphosate and is considered a "highly hazardous pesticide."
The new ingredients also pose a greater risk to the environment. They are, on average, more likely to threaten bees, birds, worms, and fish and other aquatic life. They are also less likely to break down in the environment, and therefore more likely to infiltrate groundwater and pollute rivers and drinking water.
"In short, the new Roundup is not the old Roundup—it's worse," Friends of the Earth concluded in the report.
The environmental group also criticized Bayer for not providing a warning to consumers about the altered ingredients, as well as lax federal law that does not require pesticide makers to alert shoppers when they change the ingredients of a known brand. While pesticide makers do have to list the active ingredients of a pesticide on the container, the average consumer may not be aware of the relative toxicity of these chemicals. A frequent Roundup user is also likely to assume that anything sold under that brand is similarly toxic to products they have used before.
"Drug companies are not allowed to replace the aspirin in a brand-name pain reliever with oxycontin or fentanyl, and for good reason," Friends of the Earth senior campaigner Sarah Starman said. "It is unconscionable that the Environmental Protection Agency allows this toxic sleight of hand and unethical that Bayer is exposing consumers to dramatically greater risks with no warning."
Friends of the Earth called on Bayer to develop safer chemicals and retire toxic brands like Roundup. At the very least, it urged the company to sell the new formulations under a different brand and warn buyers of the new products' health and environmental risks.
Home and garden retailers, the group argued, should also step up by removing all Roundup products from their stores and online catalogs, or at least selling them with clear warnings of the new risks; phase out toxic pesticides; and offer safer and more organic options.
Finally, the group called on the EPA to toughen its regulations by requiring ingredient-specific safety warnings on commercial pesticides, mandating that new formulations be sold under a new brand, and banning chemicals that harm human health and the environment from consumer products.
"Bayer, like other chemical companies, cannot be trusted to protect our health," Starman said. "We need serious reform at the EPA to ensure that the agency does its duty to protect people and the environment from dangerous pesticides."
"EPA lacks a legal human health assessment of glyphosate to support its current use," said a lawyer for the Center for Food Safety.
Citing research from the U.S. government's own National Institutes of Health, a coalition of environmental and farmworkers groups said Wednesday that the U.S. Environmental Protection Agency is out of excuses for continuing to allow the use of the herbicide glyphosate, which has been linked to cancer in people who are exposed to it.
The Center for Food Safety (CFS) filed a petition with the EPA on behalf of Beyond Pesticides and four farmworkers groups, including Alianza Nacional de Campesinas, saying glyphosate's registration in the U.S. is illegal.
The petition was filed a week after cancer scientists at the NIH published a study in Environmental Health Perspectives, which found that male farmers had "markers of genotoxicity" when they reported high levels of glyphosate use.
The study is only the latest to link glyphosate, the active ingredient in the widely used weedkiller Roundup, with cancer and other health issues. The World Health Organization's International Agency for Research on Cancer warned in 2015 that glyphosate is "probably carcinogenic to humans," and Roundup manufacturer Monsanto—now owned by Bayer—was ordered to pay more than $2.3 billion by juries in 2018 and 2019 for failing to warn the public about the product's risks.
"Farmworker women and their families have experienced the damaging health effects of pesticides for far too long," said Mily Treviño-Sauceda, executive director of Alianza Nacional de Campesinas. "EPA must protect the nation's farmworkers and our environment by immediately suspending and canceling all glyphosate registrations."
Last year, the U.S. Court of Appeals for the 9th Circuit struck down the EPA's claim that glyphosate is safe.
Despite the mounting evidence of the harmful effects of glyphosate, said CFS on Wednesday, "EPA has declined to act."
"EPA lacks a legal human health assessment of glyphosate to support its current use," the group said.
Pegga Mosavi, an attorney at CFS, said the petition provides the Biden administration with "a blueprint... to do what the law and science require and finally cancel glyphosate's registration."
"There is a wealth of scientific evidence demonstrating that glyphosate endangers public health, and poses cancer risks to farmers and other Roundup users," said Mosavi. "Glyphosate formulations are also an environmental hazard and have driven an epidemic of resistant weeds that plague farmers. After last year's court decision, EPA has no legal legs to stand on. EPA must take action now."
Environmental Health Perspectives also published an opinion article by health researchers who found the NIH study should be considered in glyphosate safety evaluations.
"There is really compelling new science out there," Bill Freese, science director at CFS, toldThe Guardian. "It's becoming increasingly untenable for the agency to deny the cancer hazard."
The group said the EPA should suspend the use of glyphosate—which is already banned for household use in France, the Netherlands, and Belgium, and for public use in Germany—until its registration can be canceled or the agency can prove the herbicide meets required safety standards under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA).
"In accordance with FIFRA, EPA can register a pesticide only upon determining that it will cause no unreasonable adverse effects on the environment when used in accordance with widespread and commonly recognized practice," reads the executive summary of the petition. "Glyphosate remains registered despite no demonstration by EPA that it can meet the required FIFRA safety standard for this herbicide's currently approved uses. In other words, glyphosate as it's currently used has no legal safety assessment on record."
Freese noted that in the past, the EPA acknowledged glyphosate's adverse effects on the liver, kidneys, reproductive system, and its link to cancer.
"But as Monsanto sought ever wider uses for its blockbuster herbicide," said Freese, EPA consigned those incriminating studies to regulatory oblivion, thus facilitating greater use, even as independent scientists confirmed the harms EPA now denies."