(Beyond Pesticides, September 19, 2024) An article published in the journal Science of the Total Environment finds that the European Union’s (EU) risk assessment process, required for registration, fails to accurately or reliably predict pesticide exposure rates, sometimes by several orders of magnitude. Pesticide registration in the EU leverages the Agricultural Operator Exposure Model (AOEM)—a predictive model developed in 2014 to estimate expected non-dietary pesticide exposure levels for operators [pest control operators in the U.S.] based on a very limited set of data generated by the pesticide industry. Models that predict real-world exposure and underestimate field data raise critical questions about the efficacy of risk assessment reviews that determine product labels and allowed level of harm. By comparing the dermal exposure measured during a field study conducted in a nonagricultural area with the corresponding values estimated by AOEM, researchers in France add to the body of scientific literature indicating that the fossil fuel and petrochemical pesticide industry data cannot be relied upon as a benchmark to ensure public health and safety. The study describes the difficulty and complexity of calculating the ability of protective equipment to provide protection. According to the authors, “[AOEM] underestimated hand exposure by 42 times and […]

(Beyond Pesticides, September 17, 2024) Today, International Microorganism Day, is a prime moment to focus on the complexity of billions of living beings that establish the foundation of land management and food production. Organic advocates, community members, and farmers identify the protection and enhancement of biological diversity in the soil as a key goal, especially in light of mounting concerns over rising microbial resistance to chemical-intensive practices. A recent article in British Journal of Environmental Sciences points to several microbial populations adversely affected by pesticide-contaminated soil on various farmland plots in Nigeria. There are significant variations in bacteria presence between pesticide-treated and control plots, with a lab analysis finding “[s]eventy-five percent (75%) of pesticide residue was detected in the soil samples,” which includes paraquat dichloride, endosulfan, diazinon, and N-(phosponomethyl)glycine [glyphosate]. This report builds on years of research from higher education institutions worldwide, including participatory research centering applied experiments on farmland, demonstrating the consequences of relying on pesticide-intensive agriculture and land management. The main goal of this report is to “determine the influence of pesticide contamination on the microbial population, physiochemical parameters and pesticide residue of soil of selected farmlands in Otuoke, Bayelsa State, Nigeria.” Researchers document the presence of eleven […]

(Beyond Pesticides, September 16, 2024) After the release of a hard-hitting study last week published in Science that pinpoints the cycle of increasing pesticide use with ecosystem and bat decline, resulting in higher infant mortality, Beyond Pesticides is calling for state and local action to transition public land to organic practices. Without a healthy ecosystem, the study documents increased pesticide use with dramatic adverse health effects. To take corrective action, Beyond Pesticides’ action asks governors and mayors to do the following: Eliminate the use of pesticides that imperil bats by adopting biodiversity conservation goals including— (1) ecological mosquito management with measures that recognize the benefit of preventive strategies, establish source reduction programs to manage breeding sites on public lands, educate on the management of private lands, employ programs for larval management with biological controls, and eliminate the use of toxic pesticides; (2) prohibition of systemic insecticides and treated seeds, including neonicotinoids; and (3) land management on public lands—including hospitals, higher education institutions, schools, and parks—using regenerative organic principles and organic certified practices and products, to transition to a viable organic system that prioritizes long-term health of the public, ecology, and economy. The new research connects declines in bat populations with increased […]

(Beyond Pesticides, September 13, 2024) While chemical companies persist in pushing simplistic solutions to complex problems, there is a large amount of evidence that organic farming presents effective solutions to many of those problems. Now there is new evidence that organic agriculture prevents the untold harms of pesticide-driven monoculture. In a new study, German researchers compared 16 agricultural landscapes in Lower Saxony and northern Hesse that had different combinations of semi-natural habitat, organic practices, and annual and perennial flower strips. Overall, the researchers find that organic farming provides the highest benefit to the bees, along with the presence of diverse flowering plants in and near monoculture fields. The study compares the effects of three honey bee conservation methods on the prevalence of the parasitic mite Varroa destructor and the 11 parasites Varroa transfers to bees, and the impact of these destructive organisms on bee colony growth. The findings were reported in the June issue of the Journal of Applied Ecology. Organic practices lead directly to lower parasite load and higher colony growth—essentially, the more organic crops, the more bees, and the more parasites, the fewer bees. Pesticides plus monoculture doubles the damage: Pesticides increase mortality, damage bees’ immune systems, and […]

(Beyond Pesticides, September 12, 2024) In a year with 74 national elections on the calendar, legislators and executive branches alike are in contention on the future of business-as-usual pesticide use and manufacturing. Be it Kenya or Brazil, the European Union and Mercosur (South American Trade Bloc), there is a growing contingency of farmers, advocates, researchers, and public leaders who desire a pathway forward in strengthening pesticide restrictions and supporting alternatives to chemical-intensive agriculture and land management, including organic. As leadership shifts and domestic conversations mount ahead of the 2024 United Nations Climate Change Conference (COP29) in Azerbaijan and the 2024 National Organic Standards Board meeting this fall, environmental and health advocates say it is vital that world leaders acknowledge the decades of grassroots advocacy and market development that led to the growth of organic systems in service of building capacity for nutrition, public health, biodiversity, and climate resilience while advancing food security. Kenya Earlier this month, the Kenyan parliament introduced a resolution to ban hazardous pesticides including glyphosate-based herbicide products such as RoundUp sold by Bayer/Monsanto, leading to a fiery debate on the state of agricultural uses. Hon. Gladys Boss, Deputy Speaker for the National Assembly, speaks to the rationale […]

(Beyond Pesticides, September 9, 2024)  Comments are due by 11:59 PM EDT on September 30, 2024. With the opening of the public comment period on organic standards that determine the integrity, strength, and growth of the organic agricultural sector, a study was released last week that shows degradation of the ecosystem linked to increased infant mortality associated with higher pesticide use by chemical-intensive farmers compensating for losses in bat populations. It is well known that bats, among other wildlife including birds and bees, provide important ecosystem services to farmers by helping to manage pest populations and increase plant resilience and productivity. While degradation of ecosystems is attributable to many factors, pesticide use accounts for an important element in harm to bats and biodiversity. The study, “The economic impacts of ecosystem disruptions: Costs from substituting biological pest control,” published in Science, concludes with a finding  that “insect-eating bat population levels induce farmers to substitute with insecticides, consequently resulting in a negative health shock to infant mortality.” Daily News will cover this study in depth in an upcoming edition. According to research published in the Journal of the Association of Environmental and Resource Economists (2022), bat population declines cost American farmers as much as […]

(Beyond Pesticides, September 6, 2024) A literature review in the Internal Journal of Molecular Sciences provides promising insights into biofungicides as a “sustainable and economically viable alternative” to synthetic fungicides in expanding organic agriculture. The authors note that organic “… is the most sustainable response to current crises of all kinds, as it can better anticipate and prepare for crises and create long-term equity and resilience in food systems.” The authors point out that fungal infections in crops are estimated to account for 20-40% of failures annually, and understanding how to control such agricultural diseases will be crucial to meeting the needs of a growing global population. Organic farmers and land managers note that biological tools can be integrated into practices that work with the ecosystem, rather than be utilized as “substitute” products or controls with practices that ignore soil health and beneficial organisms that enhance biodiversity and provide ecosystem services (see here and here). Conducted by researchers in Mexico, the review examines data on biosynthesis (how plants create their own fungicide, known as secondary metabolites or SMs); the mechanisms of action of secondary metabolites against phytopathogenic (plant-killing) fungi; extraction techniques and biofungicide formulations; the biological activity of plant extracts on phytopathogenic fungi; and […]

(Beyond Pesticides, September 5, 2024) As insect-borne diseases like EEE (eastern equine encephalitis) become a focus of mosquito managers, there is a continuing pattern of mosquito resistance to synthetic pyrethroid insecticides, which are the primary tools in conventional mosquito control programs—a strategy more focused on attempting to kill adult mosquitoes than the management of breeding sites. A study published in PLOS One documents Aedes aegypti mosquito resistance to synthetic pyrethroids permethrin, lambda-cyhalothrin, and deltamethrin in study sites in Córdoba, Colombia. Aedes aegypti is a common mosquito species that can carry the EEE virus and others. There is significant scientific literature highlighting the prevalence of pesticide resistance in mosquito, fly, and other insect populations. Pesticide resistance is an inherent problem with pesticide dependency generally, creating a complex fabric of threats from insect resistance to plant incorporated protectants (PIPs), weed resistance in genetically engineered crop production dependent on chemical-intensive weed control, to antibiotic resistance to medically important drugs, exacerbated by agricultural use and horizontal gene transfer. As the frequency of deadly mosquito vector diseases is expected to increase with rising temperatures and greater precipitation—which raises the number of breeding sites—advocates, physicians, beekeepers, and community leaders are calling on elected officials to prioritize ecological […]

(Beyond Pesticides, September 3, 2024) A piercing investigative article in the August 14 New York Times by journalist Greg Donahue reveals the abandonment of a group of brain disease patients in an area of Canada with forestry management for paper products, agriculture, and large amounts of pesticide use, including glyphosate. It illustrates the tension in the relationship between government authorities, regulated industries, and neurologist (physician) on the front lines. The article details the manner in which health officials appeared to manipulate their own investigation of a disease cluster to make it less disruptive to the economy of the Canadian province of New Brunswick. (This Beyond Pesticides analysis, where not otherwise indicated, draws on Mr. Donahue’s article.) New Brunswick has one major town, Moncton, and a large rural area characterized by agriculture and forestry. The province’s agriculture industry is dominated by blueberry production, which occupies the fourth largest amount of agricultural land in New Brunswick. About half the province is forested, with increasing amounts of land devoted to tree plantations intended for paper production. Glyphosate is hands-down the most heavily used pesticide in New Brunswick forestry, and New Brunswick is second only to Ontario in Canada’s total area of glyphosate-treated forest. […]

(Beyond Pesticides, August 30, 2024) There is no more compelling reason to embrace a precautionary pesticide poisoning standard this Labor Day than the need to protect workers. In fact, the Occupational Safety and Health Administration (OSHA) says on its website, Transitioning to Safer Chemicals, that the best way to protect workers is to  “eliminate or reduce hazardous chemicals at the source.” While some try to employ product substitution with “safer” chemicals, Beyond Pesticides urges decision makers to embrace alternative systems, such as organic management systems, that embrace management techniques to meet disease and infestation management goals and use only organic compatible substances. According to OSHA: “In chemical management, [the industrial hygiene principle, known as the hierarchy of controls] guides employers and workers to eliminate or reduce hazardous chemicals at the source by substituting them with safer alternatives. Unlike traditional engineering controls, administrative controls, work practice controls, or personal protective equipment, these strategies can completely eliminate exposure to hazardous chemicals, reduce the potential for chemical accidents, reduce disposal costs, and remove concerns regarding worker compliance and equipment maintenance.” A look through the state and federal databases that track occupational pesticide poisoning for both acute (immediate short-term) and chronic (long-term) pesticide effects […]

(Beyond Pesticides, August 29, 2024) The Center for Agriculture and Bioscience International (CABI) earned the 2024 Innovators Award from The Better Cotton Initiative (Better Cotton) for its leadership in developing capacity and expansion of organic standards and practices in the Pakistani cotton sector, according to a press release by Better Cotton. Given the millions of pounds of some of the most toxic chemicals used to produce cotton, and Pakistan being an exporter of $3.5 billion worth of cotton (2021), including $240 million to the U.S. (2022), cotton production is a worldwide contamination problem. The U.S. is currently the fourth largest cotton producer (domestic and export) and the largest cotton exporter in the world, accounting for 30% of all cotton produced, valued at $5.7 billion (2021). The farm value of U.S. organic cotton is $35.55 million (2021). According to the Organic Trade Association, organic cotton comprises approximately 0.95% of global cotton production. “CABI, for its multifaceted work in Pakistan which has included the creation of a national organic agriculture policy for Pakistan that is currently being assessed by the country’s Ministry of Food Security and Research,” the release goes on to discuss the implications of the years-long initiative. “If approved, the policy […]

(Beyond Pesticides, August 28, 2024) The U.S. Environmental Protection Agency’s (EPA) pesticide labeling requirements fail to adequately communicate acute toxicity levels to the public, as evidenced in a recent study of consumers published last month in the journal Nature. After evaluating whether the current three “signal” words (CAUTION, WARNING, DANGER) on pesticide products adequately convey pesticide toxicity, the authors conclude that current labeling may result in “unintended adverse effects” because it does not “effectively communicate toxicity risks to consumers.” The signal words on pesticide labels, based on laboratory animal testing for determining lethal doses, are intended to protect users of the product from exposure that can kill through inhalation, skin absorption, and ingestion of the pesticide. However, the signal words do not warn about long-effects like cancer, neurological diseases, reproductive harm, as well as other adverse effects associated with pesticide exposure. (See Pesticide-Induced Diseases Database.)   The study tests two prototype labels to evaluate the effectiveness of visual elements in communicating toxicity information, citing research in cognitive psychology that indicates visual elements, like images and graphics, are more effective for conveying information than text alone. This is particularly crucial for pesticide labels, where complex toxicity details need to be communicated quickly […]

Image: Art Page submission from Max Sano, “Maryland Farmland“ (Beyond Pesticides, August 27, 2024) A recent entry in the Civil Eats investigative series, “Chemical Capture: The Power and Impact of the Pesticide Industry,” unpacks the troubling coordination between carbon markets, toxic pesticide products, and industrial agriculture to mutually reframe their business models under the guise of climate-smart agriculture. In recent years, powerful agribusiness corporations—including Corteva (chlorpyrifos) and Bayer/Monsanto (glyphosate)—have made significant progress in becoming leading providers of carbon markets based in the United States. Advocates, farmers, and communities view the misrepresentation of carbon offsets and trading as a climate solution in a strategy that undermines proven alternative systems of agriculture and land management (aka organic). The underlying concept of carbon markets began with the emissions trading program as a result of the Kyoto Protocol back in the 1990s. “Emissions trading, as set out in Article 17 of the Kyoto Protocol, allows countries that have emission units to spare—emissions permitted them but not “used”—to sell this excess capacity to countries that are over their targets,” according to the United Nations. Based on Civil Eats’ reporting, Bayer/Monsanto with Climate FieldView and Corteva with its Carbon Solutions program, cite their pesticide products as […]

(Beyond Pesticides, August 26, 2024) In July, the U.S. Environmental Protection Agency (EPA) announced it was raising the allowable levels of the highly toxic weed killer atrazine in the nation’s waterways from the 2016 level of 3.4 to 9.7 micrograms per liter (µg/L), which scientists and environmental advocates say is a serious threat to aquatic plants, fish, invertebrates, and amphibians, in addition to people who recreate in waterways or eat food from them. With EPA’s August 7 decision to ban the weed killer Dacthal (or DCPA–dimethyl tetrachloroterephthalate), Beyond Pesticides is rallying public support for the removal of atrazine from the market under the same standards of harm, inability to mitigate hazards, and the availability of alternatives. As Beyond Pesticides points out in its 2022 atrazine comments (2020 and 2016 comments included) to EPA, the agency in November 2021 released the final Biological Evaluation (BE) assessing risks to listed species from labeled uses of atrazine (in the triazine chemical family). The agency made “likely to adversely affect (LAA) determinations” for 1,013 species and 328 critical habitats, which it is now rejecting, while using a “community-equivalent level of concern (CE-LOC)” measure that is filled with uncertainty and lacks any sense of precaution with […]

(Beyond Pesticides, August 22, 2024) A screening and analysis of 36 pesticides finds traces of these chemicals in patients with “unexplained chronic kidney disease” from agricultural communities in the Indian province of Uttar Pradesh. Researchers conducting this study, published in the Journal of Toxicology and Environmental Health Sciences, identify organophosphates, organochlorines, and pyrethroids as the main culprits, building on years of existing research pointing to adverse health impacts originating from bioaccumulation of pesticides after acute and chronic exposure. Chronic kidney disease (CKD) is a condition that afflicts one in ten adults internationally, based on a peer-reviewed analysis from The Lancet. The Centers for Disease Control and Prevention (CDC) estimate that one in seven U.S. adults (or roughly 35.5 million people) have CKD, with as many as nine in ten adults with the disease undiagnosed, based on 2023 data. The correlation between high rates of CKD and multigenerational use of and reliance on pesticides for food production, lawn care, and general land management reinforces the calls of advocates, farmers, and health professionals to adopt a new approach rooted in organic principles. Methodology This study was conducted by a group of researchers from the Department of Chemistry at Babu Banarasi Das University […]

(Beyond Pesticides, August 20, 2024) A study published online in the journal Environmental Toxicology and Pharmacology raises continuing concern about residual exposure to organochlorine pesticides (OCPs) and the disruption that they and their metabolites and isomers cause to biological systems. For the most part, OCPs, including dichlorodiphenyltrichloroethane (DDT), are no longer used worldwide, but the legacy of their poisoning and contamination persists. A 2022 article in Environmental Science & Technology cites California condors and marine mammals along California’s coast contaminated with several dozen different halogenated organic compounds (hazardous, often-chlorinated chemicals) related to DDT, chlordane, and other now-banned legacy chemicals. Other research finds DDT in deep ocean sediment and biota. And, more research finds multigeneration effects from DDT exposure with grandmothers’ exposure to DDT increasing granddaughters’ breast cancer and cardiometabolic disorder risk. This study may be the first compilation of research regarding the modes of action for distinct types of organochlorine pesticides (OCPs). The findings raise the significant danger of legacy chemicals that persist for generations and call for a precautionary regulatory standard that is focused on preventing harm and advancing alternative nontoxic practices and products. In tracking the ongoing scientific literature on a broad spectrum of adverse effects daily, Beyond Pesticides […]

(Beyond Pesticides, August 19, 2024) As a local news outlet in Virginia covers a local farm receiving organic certification, Beyond Pesticides launches an action this week to “take back organic” —in response to prominent agricultural forces and industry interests attempting to weaken organic standards and blur the line between certified organic and “regenerative” practices that are not organic-certified. In an article, VMRC’s Farm at Willow Run is certified organic [VMRC is the Virginia Mennonite Retirement Community], Rocktown Now quotes the farm manager in Harrisonburg, VA, Nate Clark, saying, “This milestone demonstrates our dedication to providing high-quality, healthy food to our residents and community while also prioritizing environmental sustainability.” The article reports that as a certified organic farm with detailed records of the farm’s field and harvest activities and materials, subject to annual inspections, “VMRC is committed to regenerative farming practices that promote soil health, energy conservation and fair working conditions.” “Regenerative” agriculture or land management that is not certified organic raises a series of questions about its lack of a standard definition that is enforceable under a compliance system. Beyond Pesticides’ piece on the subject, “Regenerative” Agriculture Still Misses the Mark in Defining a Path to a Livable Future,“ explores […]

(Beyond Pesticides, August 16, 2024) The International Panel of Experts on Sustainable Food Systems (IPES-Food) released a report, Food from Somewhere: Building food security and resilience through territorial markets, in July identifying the importance of moving beyond toxic chemical dependent, industrialized agriculture and toward “sourcing local and organic food” through alternative models, such as farmer and consumer-owned cooperatives, alternative certification schemes, and fostering relationships between organic producers and consumers through territorial markets. “[T]erritorial markets are closely associated with agroecology, and in many cases help to provide market outlets for farmers using natural fertilizers and pesticides that work with nature, rather than the fossil-fuel based synthetic inputs associated with corporate value chains,” the authors state and go on to advocate for transformative action based on various case studies rooted in organic principles and practices. Territorial markets are a nascent concept rooted in agroecology (“an integrated approach that simultaneously applies ecological and social concepts and principles to the design and management of food and agricultural systems”) and political ecology, which depending on the perspective may have differing definitions. However, there are several commonly held principles of territorial markets that include ideas of “closer to home,” “largely or fully outside of corporate chains,” […]

(Beyond Pesticides, August 15, 2024) Adding to research that has linked insecticide disruption of the gut microbial community to the progression of Parkinson’s Disease (PD) in the brain is a recently published study that further examines the gut-brain mechanism at work. A review by neuroscientist Nabanita Ghosh, PhD in Chemical Research in Toxicology—coauthored by Krishnendu Sinha, PhD, molecular toxicologist and applied pharmacologist, and molecular toxicologist Parames C. Sil, PhD—focuses on how pesticide-induced microbial community alterations specifically drive the initiation of PD and the precise mechanism. The study also explores microbiota changes at different stages of PD progression, offering recent findings.     The researchers derive their data from the examination of PD patients, evaluating the “interaction between pesticides and gut bacteria in PD patients, summarizing how pesticides cause imbalances in gut bacteria, the resulting changes, and their overall effects on the PD prognosis.”   The review “looks at how pesticides and gut bacteria separately influence PD development and progression, highlighting the harmful effects of pesticides and changes in gut bacteria.” The team concludes that pesticide exposure is connected to PD onset through “disturbances in gut function and alterations in intestinal microbiota.” However, the “exact role of microbial factors in this connection remains […]

(Beyond Pesticides, August 13, 2024) With novel methods to provide a big-picture view of the overlap between high pesticide use and cancer incidence across the U.S, a new study has again linked pesticide exposure to a range of cancers. The study by Jacob Gerkin, D.O. and colleagues, “Comprehensive assessment of pesticide use patterns and increased cancer risk,” published in Frontiers in Cancer Control and Society, examines the association between high-pesticide use and cancer diagnoses along with smoking incidence data and the Social Vulnerability Index, a measure used by the Centers for Disease Control and Prevention (CDC) that includes variables such as poverty, poor housing, and exposures to natural disasters and chemical spills. The researchers consider 69 pesticides used in agriculture that are monitored by the U.S. Department of Agriculture. They use U.S. Geological Survey data to map areas of similar crops and pesticide use patterns and incorporate public health data from the CDC to develop their final picture. In terms of threats to health, cancer remains top of mind for most people. Globally, about ten million people die of cancer each year. And while treatments for cancer and survival times have burgeoned over the years, many cancers—particularly colorectal and breast […]

(Beyond Pesticides, August 12, 2024)  When the U.S. Environmental Protection Agency (EPA) issued an emergency ban of the weed killer Dacthal (DCPA) last week, it said that there are no “practicable mitigation measures” to protect against identified hazards—a clear and honest assessment of the limits of pesticide product label changes and use restrictions. Now, the question is whether the same thinking can be applied across the EPA’s pesticide program, addressing the urgent need to protect biodiversity. In the Dacthal proclamation, EPA said it consulted with the U.S. Department of Agriculture (USDA) on “alternatives to this pesticide,” and presumably determined that there were “alternative chemicals” that could be used in chemical-intensive agriculture—while not considering “alternatives to chemicals.” This is the framework that is understood to be EPA’s process that keeps pest management on a pesticide treadmill except in extremely rare cases (this being the second in nearly 40 years). It is also the framework that has led to catastrophic events or existential crises on biodiversity collapse, health threats, and the climate emergency. On biodiversity, the mix of diverse and intricate relationships of organisms in nature that are essential to the sustaining of life, EPA’s pesticide program, the Office of Pesticide Programs, has […]

(Beyond Pesticides, August 9, 2024)​​ A study in the journal Biology and Fertility of Soils has confirmed once again that organic agriculture contributes significantly to soil health, improving ecological functions that are harmed by conventional, chemical-intensive farming practices. Organic soil amendments (fertilizers) that feed soil organisms increase beneficial protistan predators and support sustainable predator-prey relationships within the soil microbiome. [‘Protist’ is a catch-all term that describes ancient lineages of eukaryotes—organisms with a nucleus—that are neither a true plant, animal, or fungus.] The study shows that organic farming creates a healthy ecosystem able to support a balance of life forms in the soil. Moreover, the study finds that the use of chemical fertilizers for agricultural management disrupt the stable biological relationship between protistan predators and their bacterial prey in soils, adding to the argument for transitioning away from conventional systems that lean on toxic inputs.   Healthy soil contains millions of living species that form the microbiome. Most of the biodiversity in soil consists of bacteria and fungi, and their number and type are regulated partially by predatory protists and nematodes that feed on bacteria. Akin to the impact of predators keeping a herd of prey healthy by hunting the sick, […]

(Beyond Pesticides, August 8, 2024) With the use of its emergency authority—not used in nearly 40 years, the U.S. Environmental Protection Agency (EPA) on August 7 banned a pesticide (the weed killer Dacthal or DCPA—dimethyl tetrachloroterephthalate) under the “imminent hazard” clause of the federal pesticide law. At the same time, the agency is exercising its authority to prohibit the continued use of Dacthal’s existing stocks, a provision that EPA rarely uses. EPA identified serious concerns about fetal hormone disruption and resulting “low birth weight and irreversible and life-long impacts to children [impaired brain development, decreased IQ, and impaired motor skills] exposed in-utero” and finds that there are no “practicable mitigation measures” to protect against these hazards. The last time EPA issued an emergency action like this was in 1979 when the agency acknowledged miscarriages associated with the forestry use of the herbicide 2,4,5-T—one-half of the chemical weed killer Agent Orange, sprayed over people to defoliate the landscape of Vietnam in the war there—with the most potent form of dioxin, TCDD (2,3,7,8-Tetrachlorodibenzo-p-dioxin). While EPA has been congratulated for using its emergency authority, which it is obviously reluctant to use, and health and environmental activists say could be used broadly, the timeline […]