(Beyond Pesticides, March 8, 2019) Researchers from the U.S. and Switzerland have published their findings, a beginning assessment of how use of a new category of pesticides — dsRNA (double stranded RNA), which is less a traditional pesticide than a genetically based pesticide “technology” — might impact soils and non-target microorganisms in the soil. The co-authors (Kimberly M. Parker, PhD, et al.) note that, “The ecological risk assessment of these emerging pesticides necessitates an understanding of the fate of dsRNA molecules in receiving environments, among which agricultural soils are most important.” Their research appeared in late January 2019 in Environmental Science & Technology. Previously, technical hurdles in measuring dsRNA had stymied scientists’ ability to quantify the genetic material and its degradation products in soil, but these investigators were able to attach a radioactive atom to the molecule, “tagging” it so it could be followed through a series of simulated soil systems representative of those in the “real” world. Researchers were able to measure the presence of the material at concentrations as low as a few nanograms of dsRNA per gram of soil. The work of these researchers represents the beginning of understanding the ecological risks of these emerging dsRNA pesticides. They demonstrated […]

(Beyond Pesticides, March 5, 2019) Wild, edible plants subject to drift from the herbicide glyphosate during forestry operations can be contaminated with the chemical an entire year after an initial application, according to a new study published in the Canadian Journal of Forest Research. Glyphosate is often used in forestry to knock down unwanted trees, shrubs, and other plants after clear-cutting to provide room for the regrowth of trees deemed valuable. However, this new research shows that “non-target” species, such as raspberries and blueberries, eaten by wildlife and sometimes wild foraged by humans can retain significant levels of glyphosate contamination due to drift and overspray. Forester Lisa Wood, PhD, from the University of Northern British Columbia began this research based on input and requests from Canadian indigenous First Nations communities. Back in 2013, shrubs foraged by traditional berry-pickers in northeastern British Columbia were sampled and found to contain glyphosate residues, leading to the need for a broader investigation. Dr. Wood sampled the roots and shoots of 10 plant species from an area that had been aerially sprayed with glyphosate a year prior as part of forestry operations to clear aspen and make room for coniferous re-plantings. The 10 plants, which […]

(Beyond Pesticides, March 4, 2019) Last week, U.S. Representative Earl Blumenauer (D-OR) reintroduced the Saving America’s Pollinators Act (H.R.1337) to cancel specific bee-toxic pesticides and establish a review and cancellation process for all pesticides that are potentially harmful to pollinators. The specific pesticides targeted in the bill include the systemic insecticides imidacloprid, clothianidin, thiamethoxam, dinotefuran, acetamiprid, sulfoxaflor, flupyradifurone, and fipronil. The bill also establishes requirements for review of other potentially bee-toxic chemicals by an independent pollinator protection board, and requires annual reports on the health and population status of pollinators. The bill creates a sustainable model for pollinator protection in the face of ongoing obstruction by an increasingly industry-influenced EPA. There are 29 cosponsors to date. The current bill is the fifth version of Saving America’s Pollinators Act (SAPA), which was first introduced by U.S. Representative Conyers (D-MI) in 2013. The newest version differs from previous bills in its bold definition of who should have responsibility for assessing harm to pollinators. SAPA 2019 calls for the establishment of a Pollinator Protection Board, to be composed of expert scientists, beekeepers, farmers, members of environmental organizations and other key stakeholders, nearly all of whom must not have any conflict of interest or affiliation […]

(Beyond Pesticides, February 28, 2019) Earlier this month, a team of U.S. scientists published a meta-analysis of studies on glyphosate-based herbicides (GBH), concluding that the evidence “suggests a compelling link between exposures to GBH and increased risk of NHL [non-Hodgkin lymphoma],” corroborating findings by the International Agency for Research on Cancer. The analysis, authored by researchers from University of California, Berkeley, University of Washington, Seattle, and the Icahn School of Medicine at Mount Sinai, New York, is the latest to support the conclusions established by the International Agency for Research on Cancer that products containing glyphosate pose a cancer risk to humans. As research continues to accumulate on the risks posed by this chemical, the case for transitioning to less toxic alternatives to safeguard public health is becoming increasingly urgent. Researchers took every available published human study on NHL and glyphosate, including the most recently updated data from the ongoing U.S. Agricultural Health Study (AHS), in conducting their review. Focus was put on individuals within these studies exposed to the highest amounts of glyphosate. The reasoning, researchers indicate, is that if there is a true association between glyphosate and a health outcome like cancer, exposures to higher amounts for a longer […]

(Beyond Pesticides, February 5, 2019) Linuron, an herbicide registered for use by the U.S. Environmental Protection Agency (EPA), yet recently banned in Europe due to health concerns, appears to trigger inflammatory signals that have been linked to the onset of Multiple Sclerosis (MS). This new evidence, published in the journal Cell by researchers at Brigham and Women’s Hospital in Boston, MA, indicates that exposure to chemicals and pesticides in the environment may be a risk factor in the development of neurodegenerative diseases. “We created a platform to systematically investigate the understudied effects of environmental exposures,” said study coauthor Francisco Quintana, PhD. “The goal of our work is to return results that can guide future epidemiological studies and identify actionable targets.” Researchers began their investigation with 976 chemicals identified by EPA’s ToxCast program, an inventory of compounds that have undergone screening for a battery of laboratory tests. Within that inventory, 75 chemicals, including linuron, were found to interfere with the signaling pathways linked to MS. To confirm the adverse impacts, scientists used the embryos of zebrafish, animals often used as models in laboratory research. The zebrafish embryos were altered to contain low levels of myelin, a protein that protects nerve cells, as […]

(Beyond Pesticides, January, 30, 2019) Bug bombs are completely ineffective at reducing German cockroach infestations, according to new research published in the journal BMC Public Health.  Not only are they ineffective, research indicates that these products are putting people at unnecessary risk. “In a cost-benefit analysis, you’re getting all costs and no benefits,” said Zachary DeVries, PhD, co-author of the study. “Bug bombs are not killing cockroaches; they’re putting pesticides in places where the cockroaches aren’t; they’re not putting pesticides in places where cockroaches are and they’re increasing pesticide levels in the home.” Scientists enrolled residents in 30 low-income apartments that had ongoing German cockroach infestations. Of the 30 homes, 20 were treated with a name-brand total release fogger (TRF), or bug bomb, and and 10 were treated only with gel baits. Baseline pesticide residue levels were recorded in all residences, and new data was collected after use of the bug bombs. Bug bombs were set off in each infested apartment’s kitchen, according to EPA label precautions. Residents waited 4-6 hours before ventilating and returning to their homes. In apartments receiving baiting gel treatments, the products were applied three times on an as-needed basis during the course of a month. […]

(Beyond Pesticides, January 28, 2019) A  September 2018 report from the Office Inspector General (OIG) of the U.S. Environmental Protection Agency (EPA) identified issues important to protecting health and the environment. The EPA’s response to the report left many of these problems unresolved. Measures and Management Controls Needed to Improve EPA’s Pesticide Emergency Exemption Process (Report No. 18-P-0281, September 25, 2018), finds that the agency’s practice of routinely granting “emergency” approval for pesticides through its Section 18 program does not effectively measure risks to human health or the environment. Tell Congress to Ask the EPA Administrator to Close the “Emergency” Pesticide Use Loophole, and Adopt All the Recommendations of the Office of the Inspector General. Under Section 18 of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), EPA has the authority to approve the temporary emergency use of unapproved pesticides if the agency determines the pesticide is needed to prevent the spread of an unexpected outbreak of crop-damaging insects, for example. But this provision has been widely abused. The inspector general recommends EPA “develop and implement applicable outcome-based performance measures to demonstrate the human health and environmental effects of the EPA’s emergency exemption decisions.” EPA disagreed and said, [T]he development […]

(Beyond Pesticides, January 25, 2019) The partial government shutdown–now in its second month–is disrupting federal oversight of food safety for various pathogens and pesticides. Labs are shuttered, many government agency employees are furloughed, and those still working are doing so without pay. The ongoing obstruction to government assessment of the food supply puts U.S. consumers at risk. Workers from the Association of Public Health Laboratories (APHL) have expressed concerns about the U.S. Department of Agriculture’s (USDA) AMS Pesticide Data Program. This program samples, tests, and reports about pesticide residues in U.S. agricultural commodities, with a focus on chemicals that could cause problems for infants and children. Peter Kyriacopoulos, senior director of public policy at APHL, stated that only one of the ten public health laboratories is planning on continuing testing samples during the shutdown without compensation. Additionally, APHA has reported issues regarding DNA analysis of food samples involved in foodborne outbreaks. DNA samples from sick patients are used to trace back the source of outbreaks and lead to assessment of food production facilities. While outbreak investigations are headed by the currently fully-operational Centers for Disease Control and Prevention (CDC), interdepartmental research involving the USDA and Food and Drug Administration (FDA) is […]

(Beyond Pesticides, January 22, 2019) Earlier this month, U.S. Representative Nydia Velásquez (D-NY) introduced The Ban Toxic Pesticides Act, H.R.230 which bans the insecticide chlorpyrifos from commerce. Chlorpyrifos is a toxic chemical that has been linked to damaging and often irreversible health outcomes in workers, pregnant women, and children. As a result of a revised human health risk assessment, the Environmental Protection Agency (EPA) developed a regulation to ban chlorpyrifos in 2016. Under the Trump Administration, the EPA has taken steps to reverse the regulation. “It’s unconscionable for EPA to turn a blind eye as children and workers are exposed to this poison,” Velázquez said.  “If the EPA won’t do its job when it comes to chlorpyrifos, then Congress needs to act – and do so quickly.” Ask your U.S. Representative to Co-Sponsor H.R. 230 to Stop the Use of the Toxic Insecticide Chlorpyrifos, which Is Damaging Children’s Brains.  Chlorypyrifos is a widely used pesticide. Agriculture companies annually spray 6 million pounds of the substance on crops like citrus, apples, and cherries.  In the same family as Sarin gas, the substance was initially developed prior to World War II as a chemical weapon. It can overstimulate the nervous system to cause […]

(Beyond Pesticides, January 18, 2019) A new analysis by Charles Benbrook, PhD, published in the journal Environmental Sciences Europe, adds to the chronicle of the failures of the U.S. Environmental Protection Agency (EPA) to protect human health from toxic pesticides, and in this subject instance, from glyphosate. Meanwhile, a French Court has pulled the license for a Roundup product, citing the French government’s failure to protect public health. In his paper, Dr. Benbrook examines the divergent positions on the carcinogenicity of glyphosate — the active ingredient in a number of herbicides, most notably Monsanto’s (now Bayer’s) Roundup — taken by the International Agency for Research on Cancer (IARC) and by EPA. The paper calls out EPA’s handling of science related to the safety of glyphosate, suggesting that the agency has discounted evidence of the compound’s association with genotoxicity — destructive effects on cellular genetic material that can cause mutations — which can result in cancer. Dr. Benbrook is an American agricultural economist, former executive director of the National Academy of Sciences board on agriculture, and former research professor at the Center for Sustaining Agriculture and Natural Resources at Washington State University. He has long studied pesticide use related to genetically engineered […]

(Beyond Pesticides, January 14, 2019)  A petition submitted on January 7 by the Center for Biological Diversity calls on the National Marine Fisheries Service (NMFS) and the U.S. Fish and Wildlife Service (FWS) to initiate rulemaking to proscribe nearly all pesticide use in areas that are deemed critical habitat for endangered species. It asks these federal agencies to use the authority they have under the 1973 Endangered Species Act (ESA) to protect wildlife from the threats represented by pesticides — which threats both agencies have long recognized. The language of the ESA says its purpose is “to provide a means whereby the ecosystems upon which endangered species and threatened species depend may be conserved.” In its press release on the petition, the Center for Biological Diversity (CBD) notes that it comes “after decades of intransigence by the Environmental Protection Agency, which has refused to comply with the legal mandates of the Endangered Species Act to protect the nation’s most imperiled species from highly toxic pesticides like chlorpyrifos and atrazine that are known to harm wildlife.” CBD environmental health director Lori Ann Burd said, “Pesticides pose a devastating danger to endangered wildlife, from coast to coast. If the EPA isn’t going to […]

(Beyond Pesticides, January 11, 2019) Plans to weaken farmworker protections from toxic pesticides were dropped by Acting U.S. Environmental Protection Agency (EPA) Administrator Andrew Wheeler, according to an undated letter sent to Senator Tom Carper (D-DE) late last year. Reports indicate the action was part of a deal cut by both parties that permitted confirmation of Alexandra Dunn to the EPA Office of Chemical Safety and Pollution Prevention in exchange for EPA concessions that would improve pesticide and chemical safety measures. While advocates are generally pleased with the outcome of the apparent deal, the irony that deals needed to be made for an agency with protection in its name to do its job is not lost. Under former EPA Administrator Scott Pruitt, the agency backtracked on provisions put in place during the Obama administration that would update farmworker protections following decades of inaction. Pruitt determined to revisit rules put in place that would require farmworkers be 18 to spray highly toxic pesticides, implement 25 to 100 ft application exclusion zones (AEZ) after pesticide applications, and permit farmworkers to have a designated representative obtain health and safety information on their behalf. These simple, commonsense protections were strongly opposed by the agrichemical […]

(Beyond Pesticides, January 10, 2019) The Trump administration is opening the floodgates to allow widespread use of antibiotics in citrus (grapefruits, oranges and tangerines) production, expanding on an emergency use decision it made in 2017. The public has an opportunity to comment on the widespread use of streptomycin by January 19, 2019. You can comment on the federal government’s public comment page (regulations.gov) by leaving a comment opposing any additional use of antibiotics in food production during a national and international crisis of deadly disease resistance to antibiotics. You can copy Beyond Pesticides’ prepared comment below and add your own concerns. Strikingly, the decision allows for up to 480,000 acres of citrus trees in Florida to be treated with more than 650,000 pounds of streptomycin per year, and 23,000 citrus acres in California will likely be treated annually. The two approved antibacterial chemicals to be used as a pesticide in citrus production are streptomycin and oxytetracycline. These uses were permitted by the U.S. Environmental Protection Agency (EPA) under an emergency exemption in May, 2017, allowing residues of antibiotics in Florida orange juice, for the antibiotics streptomycin and oxytetracycline –allowing their use for a bacterial disease, citrus greening (Candidatus Liberibacter asiaticus (CLas) bacterium that causes Huanglongbing), […]

(Beyond Pesticides, January 4, 2019) First, the good news: plaintiffs in a 2013 lawsuit against the Environmental Protection Agency (EPA) can allow themselves a small victory dance. In that suit, plaintiffs made a number of claims related to EPA’s failure to protect pollinators from dangerous pesticides, its poor oversight of the bee-killing pesticides clothianidin and thiamethoxam, and its practice of “conditional registration,” as well as labeling deficiencies. The parties in the suit negotiated a settlement, as directed by a federal judge (see below), that was signed in October 2018 and portends some positive movement in curtailing the use of some toxic pesticides [12 products, each of which contains chlothianidin or thiamathoxam as an active ingredient] that harm pollinators in particular, as well as other organisms and the environment. It also establishes a public process for EPA to consider requiring whole formulations of pesticide products during registration, and redefining EPA’s interpretation of law that allows seeds treated with bee-toxic pesticides to escape regulation as a pesticide. The suit was brought by a number of individual beekeepers and several organizations, including Beyond Pesticides, Center for Food Safety (CFS), Sierra Club, and Center for Environmental Health, and named as defendants Steven Bradbury, then-director of the […]

(Beyond Pesticides, January 2, 2019) The “indoor microbiome” of yoga studios and other athletic facilities often contain significant levels of antibacterial chemicals like triclosan, which show up in dust and breed antibiotic resistance, according to research published last month in the journal mSystems. Triclosan may be banned from hand soaps, but its continued use in a myriad of other products, from disinfectant sprays to impregnated clothing, yoga mats, and other work-out equipment makes it difficult to avoid this now-ubiquitous chemical. This is a public health concern because these antibacterial or antimicrobial chemicals are link to antibiotic-resistant bacteria. Antibiotic resistance kills over 23,000 people each year, according to the Centers for Disease Control and Prevention (CDC). In addition to the CDC, the World Health Organization has cited this escalating problem as become one of the biggest public health challenges of our time. Many people may suspect their gym or yoga study is not a germ-free location, but attempts to address these germs through antibacterial sprays or impregnated yoga mats and other surfaces, may be exacerbating the issue—doing much more harm than good. The continued detection of triclosan and its impacts at new and unexpected locations are feeding renewed calls for a complete ban on […]

(Beyond Pesticides, December 5, 2018)  The Environmental Protection Agency (EPA) has denied a petition seeking to ban M-44s — cyanide-spraying apparatuses used to kill coyotes, foxes, and wild dogs that may prey on livestock. Submitted to the EPA in August 2017 by the Center for Biological Diversity, WildEarth Guardians, the Humane Society of the U.S., Natural Resources Defense Council, Predator Defense, the Sierra Club, and a number of other conservation, wildlife, and environmental organizations, the petition sought cancellation of the registration of cyanide capsules used in M-44s and a functional ban on their use in the “lower 48” states because of their danger to non-target wildlife, domestic pets, and people. In its letter of denial, EPA noted that it “is currently reviewing these products using the Registration Review process and sees no reason, and the Petition provides none, to start a parallel process using Special Review proceedings to look at the same issues.” Although the word “pesticide” generally conjures thoughts of a chemical meant to kill insect “pests,” whether sprayed on crops, coated onto seeds, or in the kit bag of an “exterminator” whose business it is to rout out some infestation in a home or building, these two compounds […]

(Beyond Pesticides, December 4, 2018) In mid-November, the state whose agricultural operations used more than 900,000 pounds of chlorpyrifos in 2016 (down from two million pounds in 2005) moved to establish some temporary restrictions on its use. Regulators at the California Department of Pesticide Regulation (CDPR) issued interim restrictions on the compound while the agency works on a formal regulatory process to list chlorpyrifos as a “toxic air contaminant” and develop permanent restrictions on its use. A neurological toxicant, chlorpyrifos damages the brains of young children: impacts of exposure, even at very low levels, include decreased cognitive function, lowered IQ, attention deficit disorder, and developmental and learning delays. It was slated to be banned for food uses by the U.S. Environmental Protection Agency (EPA) last year, but the decision was reversed by the Trump administration. The interim measures in California include: banning aerial application of chlorpyrifos; ending its use on many crops — except for those determined to be “critical” by virtue of there being few, if any, alternatives (as determined by the University of California Cooperative Extension and listed on DPR’s website); establishing a quarter-mile buffer zone for 24 hours after any application of the pesticide; and requiring a 24/7/365, 150-foot […]

(Beyond Pesticides, November 27, 2018) The U.S. Environmental Protection Agency (EPA) ignored the input of an expert weed scientist on the controversial herbicide dicamba, bending to Bayer’s Monsanto and the pesticide industry, according to emails obtained by the Arkansas Democrat and Chronicle (ADC) through a Freedom of Information Act request. The scandal centers on the recent re-approval of the pesticide, a highly volatile and drift-prone herbicide that has become a serious problem for many farmers and state regulators. As top-level EPA officials continue to work with industry to subvert their own agency’s scientific findings, more and more consumers are moving to organic products in order avoid the pesticide risks government regulators ask consumers to accept. Emails ADC received indicate that Jason Norsworthy, PhD, a weed scientist with the University of Arkansas, worked closely with Bayer’s Monsanto in conducting field trials this past summer, but found high volatility and drift of the company’s new dicamba-based herbicide XtendiMax. The product was developed in the face of widespread resistance to glyphosate-based herbicides in genetically engineered (GE) farm fields. However, recent accounts from farmers in the south and midwest indicate that, not only is the switch to dicamba unhelpful  in eliminating drift and reversing escalating weed resistance, its […]

(Beyond Pesticides, November 20, 2018) Scientific conclusions used to support the registration of the insecticide chlorpyrifos were flawed and omitted key health impacts, according to a fresh analysis of the original data by a team of independent scientists from northern Europe and the U.S. This re-review not only casts further doubt on the safety of the neurotoxic chlorpyrifos, it highlights a major flaw within federal pesticide regulation that allows pesticide producers to submit their own safety evaluations to the U.S. Environmental Protection Agency without public oversight. “One conclusion we draw is that there is a risk that the results of industry-funded toxicity tests are not reported correctly,” says co-author Axel Mie, PhD. “This makes it difficult for the authorities to evaluate the pesticides in a safe and valid way.” In both the U.S. and European Union, pesticide producers contract with laboratories to perform required safety tests of active ingredients they hope to register for use. While these studies are generally considered ‘confidential business information’ and not available to the public, using Swedish freedom of information laws, researchers were able to obtain two key studies relating to the developmental neurotoxicity of chlorpyrifos. Although not disclosed within the study, it is well […]

(Beyond Pesticides, November 8, 2018) Two months after publishing its first series of tests, part two of an Environmental Working Group (EWG) study finds residues of Roundup’s active ingredient, glyphosate, in all General Mills’ Cheerios and PepsiCo’s Quaker Oats products sampled. Health advocates are expressing concern about the consequences of chronic glyphosate exposure, and say U.S. federal agencies must limit the herbicide’s use on oat-based breakfast foods regularly marketed to children. In addition, organic itself is under threat, as chemical-intensive management practices undermine the future of the growing organic movement. In this second round of testing, EWG scientists purchased products around San Francisco and Washington DC. 28 samples of conventional and 16 samples of organic oat products were collected. Approximately 300 grams of each General Mills and PepsiCo product were packaged and shipped to Anresco Laboratories, in San Francisco. Detected glyphosate residues were compared to EWG’s own health benchmark of 160 parts per billion (ppb). This benchmark is based on risks of lifetime exposure and what EWG scientists consider allowable and protective of children’s health with an adequate margin of safety.  EWG’s results detected glyphosate residues in all 28 samples of conventionally grown oat products. The vast majority (all but two) […]

(Beyond Pesticides, November 2, 2018) A group of leading toxics experts, who published a paper in the journal PLOS Medicine on their research on organophosphate exposure during pregnancy and impacts on child development, are calling for a ban on organophosphate pesticides. The study evaluates current science on the risks of this class of compounds, produced by Corteva Agriscience (formerly Dow AgroSciences); its conclusions warn of the multitude of dangers of organophosphates for children, and makes recommendations for addressing these risks. The experts conclude that: (1) widespread use of organophosphate (OP) pesticides to control insects has resulted in ubiquitous human exposures; (2) acute exposures to OPs is responsible for poisonings and deaths, particularly in developing countries; and (3) evidence demonstrates that prenatal exposures, even at low levels, put children at risk for cognitive and behavioral deficits, and for neurodevelopmental disorders. Among the authors’ recommendations are these: Governments and subsidiary agencies, including the Environmental Protection Agency (EPA), should phase out chlorpyrifos and other organophosphate pesticides; ban non-agricultural uses of OP pesticides (including in household products); monitor watersheds and drinking water sources of human exposure; promote the use of integrated pest management (IPM) through incentives and training; and establish pesticide use and illness reporting […]

(Beyond Pesticides, November 1, 2018) A new study offers fresh evidence that wild bumblebee pollinators are particularly vulnerable to the impacts of neonicotinoid (neonic) insecticides, finding that exposure to these compounds interferes with mating success and population stability. Researchers from Worcester Polytechnic Institute in Massachusetts, measuring real-world harms of neonicotinoids, indicate that the impacts they found to bumblebee “reproducers,” namely queen and drone (male) bees, does not bode well for the array of plant species that relies on them. Though advocates warn that destabilizing managed pollinators could threaten U.S. food production and exports, with food prices increasing as cost of bringing pollinators to farms increases, the study’s authors and advocates insist that the impacts of such widespread poisoning of wild bees could be felt well beyond agriculture. Researchers in the lab compare behavioral and psychological responses of virgin queens, workers, and male Bombus impatiens from multiple colonies to field-realistic doses of the neonicotinoid clothianidin. While every bee was given a replenishing supply of pollen based on body weight and energy demands, four distinct concentrations of diluted analytical-grade (pure) clothianidin (including a control with no pesticide added) were mixed into a nectar-like solution and fed to the bumblebees orally for 5 […]

(Beyond Pesticides, October 25, 2018) A study published last month in Scientific Reports finds that eating sunflower pollen significantly reduces protozoan infection in bumblebees. Studying ecosystem services and what she calls “floral rewards,” evolutionary ecologist Lynn Adler, Ph.D. at the University of Massachusetts Amherst says sunflowers may provide a long sought after solution for improving bees’ immune system response to both disease and parasites. The researchers studied the protozoan Crithidia bombi, a common parasitic infection of bumble bees, known to impair learning and foraging, shorten lifespan and destabilize colony hierarchies by impacting queen bee behavior. From the outset of the study, Dr. Adler says, “the more sunflowers were grown at the farm, the lower the Crithidia load for the bees at that farm.” Knowing pollinators eat pollen as a source of protein and healthy fats, Dr. Adler hypothesized that both pollen and nectar might have medicinal effects against disease and parasites. However, her experiment did not show consistent results with nectar. After bees in the lab were starved for 4-6 hours, researchers fed individual worker bees from small colonies a drop of fructose fluid containing 6,000 Crithidia cells, being the approximate concentration bees may encounter in the wild while foraging. After […]