(Beyond Pesticides, June 13, 2024) A study published in Conservation Letters, a journal of the Society for Conservation Biology, exposes critical shortcomings in the U.S. Environmental Protection Agency’s (EPA) ecological risk assessment (ERA) process for modeling the risks that pesticides pose to bees and other pollinators. For the study, “Risk assessments underestimate threat of pesticides to wild bees,” researchers conducted a meta-analysis of toxicity data in EPA’s ECOTOX knowledgebase (ECOTOX), an EPA-hosted, publicly available resource with information on adverse effects of single chemical stressors to certain aquatic and terrestrial species. The meta-analysis found that the agency’s approach, which relies heavily on honey bee data from controlled laboratory studies, drastically underestimates the real-world threats from neonicotinoid insecticides (and likely other pesticides) to native bees and other pollinators. The study “challenges the reliability of surrogate species as predictors when extrapolating pesticide toxicity data to wild pollinators and recommends solutions to address the (a)biotic interactions occurring in nature that make such extrapolations unreliable in the ERA process.” Beyond Pesticides executive director Jay Feldman remarked, “EPA’s ecological risk assessment process is fundamentally flawed and puts thousands of bee species at risk of pesticide-caused population declines and extinctions.” Mr. Feldman continued, “This underscores the urgent […]

(Beyond Pesticides, June 10, 2024) Expanding the planting of genetically engineered crops is the major focus of “The Coordinated Framework for the Regulation of Biotechnology – Plan for Regulatory Reform under the Coordinated Framework for the Regulation of Biotechnology” (Framework), released in May by three federal agencies. In its Framework, the U.S. Department of Agriculture (USDA), the Food and Drug Administration (FDA) and the U.S. Environmental Protection Agency (EPA) use the words “exempt” or “exemption” in reference to federal safety regulations 21 times. Then, another 21 times the agencies identify their efforts to “streamline” the process for bringing genetically engineered “plant-incorporated protectants” (PIPs) to market. Without including the word “resistance” even once, the Framework advances the interests of the biotech and allied industries, ignoring the serious scientific issues regarding health and environmental effects and the economic failure for farmers facing crop loss. Meanwhile, the issue of resistance is not new to EPA, which has for years acknowledged the resistance problem despite allowing continued weed resistance to weed killers used with herbicide-tolerant crops and insect resistance to the pesticides incorporated into plants.   >> Tell USDA, FDA, and EPA to replace agricultural provisions in the Framework with policies that discourage GE crops […]

(Beyond Pesticides, June 7, 2024) This week, climate scientist and former mayor of Mexico City Claudia Sheinbaum shattered a proverbial glass ceiling, emerging as the first woman president of Mexico.   The election of a woman with a background in environmental protection— who signed an accord promising Mexican farmers to uphold the ban on transgenic corn and replace glyphosate with safer alternatives this past April—did not happen in a vacuum. According to an article by CBS News, President-elect Sheinbaum shared the following wisdom in the middle of a downtown hotel as her polling lead became definitive:  “I do not make it alone. We’ve all made it, with our heroines who gave us our homeland, with our mothers, our daughters, and our granddaughters.” As the new president-elect steps into the leadership of a country grappling with the ravages of the climate crisis, we reflect on the leadership of women in advancing Beyond Pesticides’ mission to end the use of petrochemical pesticides and fertilizers.  Leading the Fight for Farmworker Justice—Dolores Huerta    Earlier this year, Acting Governor Eleni Kounalakis of California honored the lifelong efforts of 94-year-old social justice activist Dolores Huerta, joining Washington State in recognizing Huerta’s decades of leadership in the […]

(Beyond Pesticides, May 24, 2024) Even allegedly “low-toxicity” pesticides such as flupyradifurone (insecticide), azoxystrobin, and difenoconazole (fungicides) pose adverse health effects to solitary ground-nesting squash bees (Xenoglossa pruinose), according to a study published in Biological Sciences. Fungicide exposure led to less pollen collected per flower, while exposure to flupyradifurone (FPF) produced larger offspring (which make it more challenging for them to fly). Simultaneous exposure to the three pesticides “induced hyperactivity in female squash bees relative to both the control and single pesticide exposure, and reduced the number of emerging offspring per nest compared to individual pesticide treatments.” With United Nations Food and Agriculture Organizations-sponsored World Bee Day earlier this week, now more than ever advocates are calling for the elimination of toxic insecticide classes, such as neonicotinoids and butanolides, and their wholesale replacement with organic land management principles. This study was written by Sabrina Rondeau, PhD, postdoctoral Fellow in the Department of Biology at the University of Ottawa, and Nigel E. Raine, PhD, professor at University of Guelph’s School of Environmental Science. Published on March 20, 2024, the researchers delve into the individual and co-exposure impacts of two fungicides and one insecticide, which is important, given the documented synergistic effects […]

(Beyond Pesticides, May 23, 2024)  A study recently published in the journal Nature compared the impact of organic and conventional food production using eight environmental health indicators and found that organic food has a significantly lower environmental impact than conventional food production for six of the eight indicators, including a lower potential for contributing to acidification of the environment, energy use, and biodiversity loss. For the analysis, scientists reviewed 100 different “life cycle assessments” (LCA) of organic and conventionally grown food products from cradle-to-farm gate.    LCA is a commonly used methodology to estimate food production system impacts on the environment through resource depletion and pollutant emissions. The results—that organic food production is less impactful on the environment—add to the robust body of research that underscores the importance of organic farming to the development of a sustainable global food system while addressing climate change. Beyond Pesticides has long argued that one of the most powerful tools in fighting global warming is organic agriculture, as it sequesters atmospheric carbon, eliminates the use of fossil fuel-based synthetic fertilizers and synthetic pesticides, and provides environmental and human health benefits. This study and most of the 100 studies it evaluates, do not recognize that conventional […]

(Beyond Pesticides, May 16, 2024) In a recent study at the Institute of Biochemistry and Molecular Biology at Ulm University in Germany, published in Current Research in Toxicology, scientists exposed embryos of South African clawed frogs (Xenopus laevis) to three neonicotinoids (NEOs), which led to developmental effects down to a molecular level. These frogs are a well-established model species often used in ecotoxicology studies as bioindicators for overall environmental and ecosystem health. When amphibian species like Xenopus laevis are exposed to contaminants in the water, it leads to negative impacts in the food chain and harms biodiversity. The study concludes that exposure to NEOs directly or through contaminated water leaves entire ecosystems vulnerable.    The NEOs that the embryos were subjected to include imidacloprid (IMD), thiamethoxam (TMX), and its metabolite clothianidin (CLO). NEOs are a class of insecticides that target the central nervous system of insects and lead to death. These insecticides pose a potential hazard to nontarget organisms, such as animals and humans, since they are persistent in the environment and “are found in natural waters as well as in tap water and human urine in regions where NEOs are widely used,” this study states. The authors continue by […]

(Beyond Pesticides, April 26, 2024) Researchers build on existing research when assessing the relationship between long-term exposure to organophosphorus pesticides—widely used in food production and homes and gardens—and the human gut microbiome. In a new study published in Environmental Health, an interdisciplinary research team from University of California, Los Angeles determined, “that exposure to [organophosphorus pesticides] is associated with changes in the abundance of several bacterial groups and differential functional capacity in metabolic pathways supported by the human gut microbiome.” The study draws upon data from a “Parkinson’s, Environment and Gene study (PEG)” in which 190 participants were asked to submit fecal samples and answer interview questions. “[The study] was initially designed to investigate the etiology of Parkinson’s disease (PD) and participants were recruited in two study waves [‘over the full 10-year exposure window’]: 2001–2007 and 2012–2017. At baseline, [Parkinson’s disease] patients were diagnosed within the past 5 years and randomly selected community controls were also recruited,” the research team shares in their Methodology section. “Since 2017, we invited previous study participants who could be contacted to enroll in a pilot study of the gut microbiome. In addition, we invited a household or community member of [Parkinson’s] patients to participate.” […]

(Beyond Pesticides, April 25, 2024) In a study from earlier this year, “Pesticides: An alarming detrimental to health and environment,” scientists compiled research from 154 articles regarding pesticide use and the adverse effects they have on the environment and human health. Among the effects of the harmful pesticides described is genotoxicity—the alteration of genetic material that results in the mutations in DNA that cause cancer.  The authors state that “genotoxins are mutagenic chemicals, and exposure to them increases the risk of developing tumors, hormonal changes, DNA damage, and changes in the ovaries and eggs, all of which leading to cancers… The risk of DNA damage surges with increased genotoxicity in people exposed to pesticides.” In addition, the National Institute of Health states that all “pesticides are highly biologically active chemicals. They may interact with DNA and damage its structure.” Despite these documented risks, pesticide use continues to surge.  While phased out to a considerable extent after being widely used in agriculture and residential areas, organochlorine pesticides (OCPs) like dichlorodiphenyltrichloroethane (DDT) or its breakdown compound dichlorodiphenyldichloroethylene (DDE) continue to show up as residues in the environment and food supply. Symptoms in humans that have been exposed to these chemicals include: seizures, […]

(Beyond Pesticides, April 24, 2024) On April 16, 2024, the U.S. Environmental Protection Agency (EPA) posted an “update” to the Draft Herbicide Strategy Framework (Draft Herbicide Strategy Framework to Reduce Exposure of Federally Listed Endangered and Threatened Species and Designated Critical Habitats from the Use of Conventional Agricultural Herbicides) that was released last summer, weakening aspects of the agency’s efforts to “protect” endangered species from herbicide use. The update outlines three types of modifications to the Draft Strategy, including “simplifying” its approach, increasing growers’ “flexibility” when applying mitigation measures, and reducing the mitigation measures required in certain situations. By reducing the stringency of the Strategy, advocates are again questioning EPA’s commitment to fulfilling legal requirements under the Endangered Species Act (ESA) or protecting endangered species and their habitats in the midst of an unprecedented rate of global extinction. ESA is celebrated as one of the most far-reaching conservation laws globally, credited with preventing the extinction of 99 percent of those species the government targets for protection, according to the U.S. Fish and Wildlife Service (USFWS). ESA establishes a framework to categorize species as “endangered” or “threatened,” granting them specific protections. Under ESA, EPA is required to consult with relevant agencies […]

(Beyond Pesticides, April 12, 2024) In honor of Earth Month, Natural Grocers® is partnering with Beyond Pesticides for its seventh annual Ladybug LoveSM campaign. Natural Grocers, a longtime leader of the organic movement through national advocacy efforts and rigorous product standards, encourages its communities to pledge to protect beneficial insects and further Beyond Pesticides’ critical mission of converting local parks and playing fields to organic landscape management practices.   Natural Grocers’ annual Earth Month fundraising efforts benefit the nonprofit organization, Beyond Pesticides and its Parks for a Sustainable Future program. Cleaner air, water, and land make for a healthier food supply – a principle Natural Grocers has championed since 1955. Click here to see the campaign from last year. April shoppers at Natural Grocers’ 168 stores are also invited to donate to Beyond Pesticides at checkout. Ladybug Love also features in-store promotions! LADYBUG LOVE & BEYOND PESTICIDES Natural Grocers’ Ladybug Love campaign aims to bring awareness to the precious insects that play a crucial role in the stability of our food supply and regenerative farming. The annual Earth Month fundraising efforts benefit Beyond Pesticides and its Parks for a Sustainable Future program, designed to assist communities in transitioning away from pesticide use at local parks […]

(Beyond Pesticides, April 10, 2024) Researchers in a 2024 Chemosphere study find synergistic relationships in certain chemical mixtures, particularly heptachlor and triallate and trifluralin and lindane at lower concentrations, respectively. “Investigators should consider additional binary data for acute toxicity and potential chronic health impacts on these mixture…which showed synergism at low levels,” the researchers conclude. “According to a Centers for Disease Control (CDC) assessment, more than 50 pesticides are detected in blood or urine samples from the US population,” Researchers point to a cause for concern. The findings come as no surprise to advocates who have urged an assessment of the potential synergistic impacts of pesticide mixtures in the regulation of pesticides. Researchers “used the exposure data from a complex operating site with legacy pesticide pollution to evaluate if Inhalation of pesticide mixtures released from such contaminated sites could pose a risk to human health, The component-based risk assessment approaches that rely on additivity can predict the actual risk of pesticides in a mixture, and The legacy organochlorine pesticides banned many years ago interact with registered and supposedly safe herbicides in a mixture.” The study site is “a pesticide packaging and handling facility” contaminated with the following pesticides (“historical and […]

(Beyond Pesticides, April 8, 2024) When Mexico in 2020 decided to protect its traditional varieties of corn for reasons of health, safety, environmental protection, and food sovereignty with the banning of the importation of genetically engineered (GE or GM-genetically modified) corn by 2024, the powerful biotech industry and the U.S. government began a concerted campaign to stop the country’s efforts. With the opposition spearheaded by BIO, “the world’s largest trade association representing biotechnology companies, academic institutions, state biotechnology centers and related organizations across the United States and in more than 30 other nations” (as described in its March 15 press release), including companies like Bayer/Monsanto, the U.S government is calling Mexico’s action a trade barrier. The U.S. is invoking the U.S.-Mexico-Canada Agreement (USMCA), the trade agreement that replaced the North America Free Trade Agreement (NAFTA) in 2020. This is just one of the latest examples of corporate power reigning over U.S. environmental and economic policies. Mexico has already announced a delay in the planned April 1 ban on the importation, production, distribution, and use of glyphosate. Interestingly, this is all happening despite reports that the Biden administration is seeking to “tackle corporate abuses,” which is apparently limited  to tax reform and […]

(Beyond Pesticides, March 20, 2024) A report by CBAN unpacks the ecosystem and wildlife health impacts of genetically engineered (GE) corn in the context of Mexico’s 2023 decision to stop its importation into the country. The phase out of genetically modified (GM) corn imports into Mexico was immediately challenged by the U.S. and Canadian governments as a trade violation under the 2020 U.S.-Mexico-Canada Agreement (USMCA), which replaced the North American Free Trade Agreement (NAFTA) as the primary vehicle for North American trade policy. In August 2023, the U.S. Trade Representative set up a dispute settlement panel under USMCA to stop Mexico from going forward with its ban. There has been no public update from the Office of the U.S. Trade Representative as of this writing. The CBAN report highlights the scientific rationale underpinning Mexico’s decision to “safeguard the integrity of native corn from GM contamination and to protect human health” with this ban. In 2020, Mexico announced a four-year phase-out of the weed killer glyphosate, which along with other petrochemical herbicides is integral to GM corn production. When Mexico’s Minister of the Environment announced the phase-out, he said it is part of an effort to transform the country’s food system […]

(Beyond Pesticides, March 11, 2024) Inside a recent disagreement between the Office of the Inspector (OIG) and the U.S. Environmental Protection Agency’s (EPA) Office of Pesticide Programs (OPP) on the agency’s review of pet flea and tick collars—leading to thousands of deaths and poisonings—is a basic question of the adequacy of pesticide regulation. The disagreement is over the cause of 105,354 incident reports, including 3,000 pet deaths and nearly 900 reports of human injury, and the February 2025 OIG report’s conclusion that “[EPA] has not provided assurance that they can be used without posing unreasonable adverse effects to the environment, including pets.” While the disagreement focuses on a number of EPA process failures, Beyond Pesticides urges that the findings advance the need for the agency to address a key element of chemical mixtures in pesticide products not currently evaluated, potential synergistic effects—the increased toxic potency created by pesticide and chemical combinations not captured by assessing product ingredients individually.  Key to the dispute is what many see as a foundational failure of EPA to evaluate the effect of pesticide mixtures and full formulations of pesticide end products, a longstanding criticism of the agency’s pesticide registration process, which focuses on pesticide products’ active […]

(Beyond Pesticides, March 6, 2024) With over 2,500 pet deaths and 900 reports of adverse effects to people, an Office of Inspector General (OIG) report, published on February 29, 2024, reveals multiple systemic failures by the U.S. Environmental Protection Agency’s (EPA) Office of Pesticide Programs (OPP), citing inadequate safety reviews of Seresto pet collars. The report, The EPA Needs to Determine Whether Seresto Pet Collars Pose an Unreasonable Risk to Pet Health, concludes, “The EPA’s response to reported pesticide incidents involving Seresto pet collars has not provided assurance that they can be used without posing unreasonable adverse effects to the environment, including pets.” At the time the animal effects made headlines in 2021, the agency defended the product’s registration, telling the media that, despite these incidents, EPA deemed Seresto collars “‘eligible for continued registration’ based on best available science, including incident data… No pesticide is completely without harm, but EPA ensures that there are measures on the product label that reduce risk.” Despite the scathing criticism, EPA maintains the position that it conducted an adequate review of the two active insecticide ingredients in the pet collars—the neurotoxic insecticide flumethrin, and the notorious neonicotinoid imidacloprid—proven to have adverse effects on the endocrine system as […]

(Beyond Pesticides, March 5, 2024) Buried in a court decision in February that determined that the U.S. Environmental Protection Agency (EPA) violated the law in allowing harm associated with the herbicide dicamba’s registration is language that permits the damages to continue through this year’s growing season. The judge’s ruling, deferring to EPA’s interpretation of the existing stock provision in the federal pesticide law, continues a pattern of “existing stock” allowances that permit hazards to continue well after a finding of harm or noncompliance. This process contrasts with the issuance of a product recall, which is typically done when pharmaceuticals are found to violate safety standards. Despite the finding of dicamba’s harm and EPA’s failure to comply with standards, the continued use of the weed killer through the 2024 growing season is effectively authorized in a decision of the U.S. District Court of Arizona, which vacates the EPA’s 2021 authorization of the use of three over-the-top (OTT) uses of dicamba-based herbicide products. In response, EPA issued an existing stocks order. EPA’s pattern of allowing the use of existing stocks has long been a concern for public health and environmental advocates, who have called for the discontinuance of use upon findings of […]

(Beyond Pesticides, February 28, 2024) The U.S. Environmental Protection Agency (EPA) is putting on hold its Vulnerable Species Project (VSP) after vociferous comments from the petrochemical pesticide industry to instead, “create a narrow, tailored policy rather than a sweeping, burdensome one,” according to a recent op-ed in the Wall Street Journal. Upon heavy pushback from the petrochemical pesticide industry and agribusiness, EPA is hosting a variety of workshops and openings for the public to provide feedback not just on VSP, but the Endangered Species Act (ESA) Workplan the Biden Administration originally introduced in 2021 in its entirety. Advocates are calling for the strengthening of pesticide regulation given the impending decisions that may shape the fate of ESA-FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act) compliance for years to come. As EPA continues through its pesticide registration program to advance continued dependency on pesticides through its interpretation of FIFRA, despite the availability of nontoxic alternatives, endangered species extinction and biodiversity collapse has never been a high priority. While EPA has initiated efforts to address a significant backlog of pesticide evaluations, Civil Eats has reported that the agency faces a task so extensive that it may require several additional decades to fully catch up. EPA officials stated, “Even if EPA completed […]

(Beyond Pesticides, February 13, 2024) Last week, the United States District Court for the District of Arizona struck down the U.S. Environmental Protection Agency’s (EPA) 2021 approval of three dicamba-based herbicides. This is the second lawsuit since 2020 to call out EPA’s violation to both the Endangered Species Act (ESA) and the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) to authorize the use of over-the-top (OTT) dicamba-based herbicide products from Bayer and other petrochemical pesticide companies. This rejection of dicamba-based herbicides fuels advocates’ push for stronger regulatory actions by EPA for all petrochemical pesticides and their push for the more widespread adoption of organic practices that do not use these chemicals. The case was filed by Center for Food Safety (CFS), Center for Biological Diversity, National Family Farm Coalition, and Pesticide Action Network North America. Beyond Pesticides has covered the dicamba tragedy for years, including the EPA Office of the Inspector General’s critical 2021 report, EPA Deviated from its Typical Procedures in Its 2018 Dicamba Pesticide Registration Decision. The report identifies EPA’s abandonment of science and assault on agency integrity. In addition to citing adverse impact on nontarget crops and the environment, the Court zeroes in on EPA’s failure to adequately manage […]

(Beyond Pesticides, February 9, 2024) EPA is accepting public comments through today, Friday February 9, on its long-held policy of exempting “treated objects,” including seeds and paint, from pesticide registration. Although EPA does not ask the most important question—“Should pesticide-treated seeds and paint be exempt from the scrutiny given pesticide products?”—this comment period offers an opportunity to respond to EPA’s questions and express concern about hazards associated with chemical use and product ingredients. Despite exposure patterns associated with the use of pesticides in treated objects that are linked to environmental contamination and human poisoning, EPA is focused on labeling and not regulation. Instead of focusing on the exposure and harm associated with the object’s use—whether treated seeds poison pollinators, soil, and water or whether paint treated with fungicides poisons people exposed to the paint—EPA takes the position that unless the manufacturer makes a pesticidal claim, the object is not regulated as a pesticide for its pesticidal effects.  Beyond Pesticides states: At the very least, if EPA deems the hazards associated with the use of the pesticide in the treated article acceptable, then the agency should disclose the chemical used in the treatment (of the seed or the paint) and require […]

(Beyond Pesticides, January 25, 2024) Legislative efforts to curtail some life-threatening pesticides associated with birds and bees (and other pollinators) decline were weakened in New York State at the end of December 2023 as the governor negotiated and stripped elements of a bill relating to agriculture that had passed the legislature—again illustrating the grip of the agrichemical industry on public policy intended to begin to address the crisis in ecosystem collapse. (See “Study Cites Insect Extinction and Ecological Collapse.”) In passing the Birds and Bees Protection Act, New York joined New Jersey, Nevada, and Maine in banning most nonagricultural uses of neonicotinoid (neonic) insecticides, but, in last-minute changes to avoid the governor’s veto, failed to phase out corn, soybean, and wheat seeds coated with these chemicals. [Pointing to an exemption in federal law that has been challenged by advocates, the U.S. Environmental Protection Agency (EPA) does not regulate treated or coated seeds as pesticides despite their toxic pesticidal properties.] In New York State, the governor can, in consultation with the leadership of the legislative branch, negotiate language changes (called Chapter Amendments) in legislature-passed legislation (originally enacted) before deciding to sign it into law or can simply choose to veto the legislation. […]

(Beyond Pesticides, January 17, 2024) Science continues to find a link between mental health and occupational (work-related) chemical exposure, with a study published in Toxicology finding an increased risk of depression among farmers exposed to pesticides. Conventional, chemical-intensive farming is a profession notorious for higher-than-average pesticide exposure occurrences, thus explaining why the study concludes that individuals within this occupation can suffer from chemically induced oxidative stress, inflammation, and lower education-based cognition that exacerbate depressive symptoms. However, besides psychological symptoms, the study indicates potential physiological issues from pesticide exposure, such as renal (kidney) and hepatic (liver) issues. Studies like this one can directly pinpoint risks of developing depression, especially among agricultural workers and landscapers who use pesticides. Usually, research on pesticide-induced diseases commonly investigates pesticide exposure concerning the development of various physical illnesses. However, previous studies show that occupational risks of developing depression are high in agriculture, where pesticide use is rampant. Acute exposure to chemicals, including organophosphate, organochlorine, triazine, and carbamate pesticides, tends to put farmers at greater risk of suicide than the general population. There is a lack of information connecting pesticide exposure to the subsequent psychological (psychiatric) effects on the general population. Although the etiology of depression—and many other psychiatric disorders—is often genetic, […]

(Beyond Pesticides, January 16, 2024) The U.S. Environmental Protection Agency (EPA) has long been criticized for its failure to evaluate the effectiveness (or efficacy) of all the pesticides it registers. A petition, for which there is now an open public comment period (submit comments by January 22, 2024), challenges what advocates call a basic failure of the agency to evaluate the claimed benefits of pesticides. Because of this long-standing situation, those who purchase pesticides do not know that the pesticides they buy will meet expectations for control. For farmers, that means that EPA has not evaluated whether the pesticide’s use actually increases productivity of the treated crops and/or whether over time the target pest (weed, insect, fungus) will become resistant. For consumers, it also means that there is not an independent analysis of whether the pesticide products work. As EPA implements the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), not only is there no agency assessment of whether the pesticide’s use will achieve its intended purpose, there is not a determination as to whether there is a less toxic way of achieving the pest management goal. As Beyond Pesticides cited last year, a piece published in the Proceedings of the […]

(Beyond Pesticides, January 9, 2024) A “landscape-level” study finds that typical risk assessment studies used by the U.S. Environmental Protection Agency (EPA) and European regulators fail to “safeguard bees and other pollinators that support agricultural production and wild plant pollination.” The study, published in Nature (November 2023), evaluates the health of bumble bees (Bombus terrestris) as a sentinel species placed in 106 agricultural landscapes across Europe. The authors’ conclusions challenge “the current assumption of pesticide regulation—that chemicals that individually pass laboratory tests and semifield trials are considered environmentally benign”—calling into question EPA’s persistent failure to adequately regulate mixtures of chemicals to which organisms are exposed in the real world. This study adds to the body of science on pesticide mixtures adversely affecting bee and pollinator health. See here, here, and here. The failure to capture real-world exposure to pesticide mixtures in its regulatory assessments extends to EPA’s systemic failure to evaluate a range of serious adverse impacts, as noted by the agency’s Office of Inspector General (OIG) report. And, aquatic environments also have documented mixtures of pesticides, with the U.S. Geological Survey finding 90 percent of water samples containing at least five or more different pesticides. “We can take no comfort […]