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15
Jun

USDA Agreement Bans Organic Certifier from Operating in China for One Year

(Beyond Pesticides, June 15, 2010) The U.S. Department of Agriculture’s (USDA) National Organic Program (NOP) announced on June 14, 2010 it has reached a settlement agreement with the organic certifying agent Organic Crop Improvement Agency (OCIA), ceasing its operations in China because of inadequate oversight. An August 2007 audit by the NOP revealed that OCIA used inspectors on state-run farms who were employed by the Chinese government and therefore had a conflict of interest. In July 2008, NOP proposed revocation of OCIA’s accreditation in China, but OCIA appealed. The settlement agreement with OCIA, once a lead certifier of Chinese organic goods, prohibits it from operating in China. OCIA retains its accreditation for its certification activities in other countries, including the U.S., Canada and Mexico. “It is critical that we maintain the integrity of organic products for consumers,” said Rayne Pegg, Administration of USDA’s Agricultural Marketing Service (AMS), which administers the NOP. “All certifiers and operations, domestic or foreign, must be held to the same standards. We will remain vigilant to make sure that products labeled as organic meet the standards prescribed by law.” Environmentalists are pleased that USDA has taken action against OCIA, but are concerned that the process did […]

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14
Jun

Whole Foods Adopts Policy on Mislabeled “Organic” Personal Care Products

(Beyond Pesticides, June 14, 2010) Whole Foods Market is setting a good example for other retailers to follow in protecting consumers from fraudulent “organic” claims on health and beauty products. The national grocery retailer of natural and organic products announced earlier this month that all cosmetic and personal care products sold at their stores with the word “organic” on the product label must comply with the U.S. Department of Agriculture (USDA) National Organic Program (NOP) or NSF 305 standards, meaning that the product must be third-party certified to USDA organic standards or front label “organic” claims must cease, according to the Organic Consumers Association. Thought the term “organic” on all products, whether for food or non-food items, meant that it was certified? That’s the law, but sometimes not the reality. The reality is that the USDA’s NOP requires certification for all “organic” claims on food products, but does not currently have similar certification requirements in place for non-food items. The new Whole Foods Market policy states, “We believe that the ‘organic’ claim used on personal care products should have very similar meaning to the ‘organic’ claim used on food products, which is currently regulated by the USDA’s National Organic Program. […]

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11
Jun

Under Pressure EPA Denies Ohio’s Request to Use Restricted Pesticide

(Beyond Pesticide, June 11, 2010) The Environmental Protection Agency (EPA) has refused the state of Ohio’s request for an emergency exemption to use the restricted pesticide propoxur in residential settings for control of bed bugs, stating that the chemical “presents unreasonable risk.” Propoxur is a highly toxic, broad spectrum insecticide. All indoor residential uses of this known neurotoxic chemical and possible carcinogen were voluntarily canceled in 2007. The Ohio Department of Agriculture, deeming the increases in bed bug infestations an emergency, requested an exemption to use propoxur in residential areas and in May the Ohio Senate’s Environment and Natural Resources Committee adopted a unanimous resolution urging the EPA to grant it. Beyond Pesticides, with coalition of environmental and public health groups, opposed the request and asked EPA to deny the exemption, citing the serious public health threat associated with the chemical, as well as the availability of alternatives. EPA determined “the requested use presents an unacceptable risk,” according to Administrator Lisa Jackson, in a letter to Ohio Governor Ted Strickland dated June 2, 2010. “Although EPA recognizes the severe and urgent challenges that Ohio is facing from bed bugs, the results of the risk assessment do not support the necessary […]

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10
Jun

EPA Moves to End All Uses of Toxic Pesticide Endosulfan

(Beyond Pesticides, June 10, 2010) After years of pressure from environmental and international groups concerned about the chemical’s health effects, the U.S. Environmental Protection Agencey (EPA) announced that it is taking action to end all uses of the insecticide endosulfan in the United States. EPA has decided that new data presented to the agency in response to its 2002 reregistration eligibility decision (RED) have shown that risks faced by workers are greater than previously known. EPA also has found that there are risks above the agency’s level of concern to aquatic and terrestrial wildlife, as well as to birds and mammals that consume aquatic prey which have ingested endosulfan. Farmworkers can be exposed to endosulfan through inhalation and contact with the skin. An organochlorine insecticide first registered in the 1950s, endosulfan is used on a variety of vegetables, fruits, cotton, and on ornatmental shrubs, trees and vines. It poses unacceptable neurological and reproductive risks to farmworkers and wildlife and can persist in the environment. According to the EPA, crops with the highest use in 2006 — 2008 included tomato, cucurbit, potato, apple, and cotton. The use of endosulfan decreased overall from 2001 to 2008. A restricted use pesticide, endosulfan may […]

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09
Jun

NY State Launches ‘Be Green Organic Yards’ Program

(Beyond Pesticides, June 9, 2010) Residents of New York now have new assistance in maintaining beautiful, green lawns, plants and trees without the use of toxic chemicals. The New York Department of Environmental Conservation (DEC) has initiated the ”˜Be Green Organic Yard NY” program, where participating ”˜Be Green’ businesses agree to avoid synthetic pesticides and other materials prohibited by the organic ”˜Be Green’ standard. ”˜Be Green’ landscape services utilize an organic approach focusing on preventing problems before they occur, and building a sustainable landscape that is healthy for all -plants, wildlife, pets, and people. Services can range from a simple regimen of weeding, mulching and pruning, to all aspects of yard care, including plant selection and tree and lawn installation and maintenance. DEC expects that, by the fall of 2010, yard care businesses will be able to begin taking the training required to participate in ”˜Be Green’. ”˜Be Green’ businesses sign an agreement with DEC for the right to use the ”˜Be Green’ service mark (logo). In return, businesses agree that, when they provide ”˜Be Green’ services, they will avoid the synthetic pesticides and other materials prohibited by the organic standards in the agreement. “Demand for all types of organic […]

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08
Jun

Indian Court Finds Eight Guilty for 1984 Union Carbide Gas Disaster

(Beyond Pesticides, June 8, 2010) An Indian court in Bhopal, India, capital of Madhya Pradesh, found chemical company Union Carbide guilty of negligence and convicted eight former senior employees for their role in the world’s worst industrial disaster that killed thousands. The verdict came 25 years after the Union Carbide gas-leak and included a sentence that many victims of the accident protested was too light. According to Reuters, the defendants were charged with “death by negligence” and sentenced for two years in prison and a fine of 100,000 rupees ($2,175). The court also fined the former Indian unit of Union Carbide 500,000 rupees ($10,600). The Central Board of Investigation initially charged 12 defendants with culpable homicide, which would have carried a sentence of up to 10 years, but the Indian Supreme Court reduced these charges in 1996. Many victims and activists found the light sentence, “an insult”, and Sandhna Kamik of the Bhopal Gas Victims Struggle group protested, “Even with the guilty judgment, what does two years punishment mean? They will be able to appeal against the judgment in higher courts.” Survivors, relatives and activists gathered in protest with signs saying “hang the guilty” and “traitors of the nation” and […]

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07
Jun

Violations Filed Against Utah Pest Control Company After Children’s Death

(Beyond Pesticides, June 7, 2010) With thousands of violations cited, the pest control company and applicator responsible for the deaths of two young children are only fined several tens of thousands of dollars, a mere slap on the hand. The Utah Department of Agriculture and Food’s (UDAF) Division of Plant Industry has finally filed multiple charges of violations against Bugman Pest and Lawn, Inc. of Bountiful, Utah, and employee Cole Nocks associated with the February 5, 2010 application of the pesticide Fumitoxin (active ingredient: aluminum phosphide) at the residence of Nathan and Brenda Toone of Layton, Utah that lead to the death of their two daughters ages 15-months and 4 years. In addition to the Layton incident, investigators discovered additional violations of the Utah Pesticide Control Act by the company and other employees. The UDAF seeks to revoke Mr. Nocks’s applicator license and has issued him a $27,000 fine, while Bugman Pest and Lawn, Inc. is fined $32,000. Under law, the UDAF is only allowed to file civil penalties. Investigators determined that on February 5, 2010 applicator Cole Nocks operated in a faulty, careless or negligent manner by misapplying the highly toxic and restricted use pesticide, Fumitoxin. Mr. Nocks’s improper […]

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04
Jun

EPA Proposes New Pesticide Discharge Permits

(Beyond Pesticides, June 4, 2010) The U.S. Environmental Protection Agency (EPA) proposed new permit requirements for the discharge of pesticides into US waterways. EPA announced the public availability of a draft National Pollutant Discharge Elimination System (NPDES) General Permit for certain pesticide use patterns, also known as the Pesticides General Permit (PGP). The agency is accepting public comments until July 19, 2010. This action stems from a 2009 court decision in the case of the National Cotton Council et al. v. EPA, in which the 6th circuit court of appeals ruled that pesticide discharges into water are pollutants and require permitting under the Clean Water Act (CWA). This ruling overturned the Bush administration policy that exempted pesticides from regulation under the CWA, and instead applied the less stringent standards of the Federal Insecticide Fungicide and Rodenticide Act (FIFRA). CWA uses a kind of health-based standard known as maximum contamination levels to protect waterways and requires permits when chemicals are directly deposited into rivers, lakes and streams, while FIFRA uses a highly subjective risk assessment that does not consider safer alternatives. EPA will issue permits in territories, Indian Country Lands, 6 states and the District of Columbia where the Agency is […]

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03
Jun

City Lawmakers to Strengthen Pesticide Ban, Oversight and Enforcement

(Beyond Pesticides, June 3, 2010) City lawmakers in Albany, New York want to strengthen an 11-year-old ban on the use of some pesticides on city land after the revelation last week that one such banned chemical was sprayed near a local playground earlier this month. Albany’s Parks and Recreation Commissioner John D’Antonio said last Friday he was unaware of the ban, passed by the council in 1998, until he began researching a recent citizen complaint. The city is now rethinking its use of pesticides and exploring why the ban on city use of pesticides dubbed most toxic by the federal government was not more widely known. The law also required departments using less toxic pesticides to annually report plans to phase them out to the Common Council. TruGreen, a city contractor, used Trupower 3 Selective Herbicide, which is a mixture of 2,4-D, mecoprop-p and dicamba, and is listed in Toxicity Category 1 (most toxic) by the Environmental Protection Agency (EPA) — causing potentially irreversible eye damage, but is also toxic if ingested and can be irritating to the skin. The herbicide has been banned from city land, except in rare circumstances, since 1999. Under the same ordinance, all city agencies […]

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02
Jun

Dole Proposes New Settlements for Sterile Plantation Workers

(Beyond Pesticides, June 2, 2010) After decades-long litigation over the use of the toxic pesticide dibromochloropropane, or DBCP, in the 1970’s which has been linked to sterility and has since been banned, Dole Food Co. is proposing new settlements for farm workers claiming they were injured by exposure to the pesticide. A request has been filed by lawyers for Dole in the Los Angeles Superior Court asking that nearly 1,500 Honduran farm workers who are suing Dole be allowed to drop out of those suits and settle their claims out of court under an existing program arranged by the company and Honduran government officials. This could potentially end years of legal action inexpensively for Dole while providing compensation to workers quickly, however some people view this plan as a way for the company to back out of its responsibilities to former plantation workers. The pesticide DBCP was used by workers from Nicaragua, Costa Rica, Guatemala, Honduras, and Panama to kill worm infestations in the trees’ roots. In the U.S., DBCP was used as a soil fumigant and nematocide on over 40 different crops until 1977. According to the U.S. Environmental Protection Agency (EPA), DBCP causes male reproductive problems, including low […]

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01
Jun

USGS Finds Atrazine Herbicide Adversely Affects Fish Reproduction

(Beyond Pesticides, June 1, 2010) Atrazine, one of the most commonly used herbicides in the world, has been shown to affect reproduction of fish at concentrations below U.S. Environmental Protection Agency’s (EPA) water-quality guideline, according to a new U.S. Geological Survey (USGS) study. “Concentrations of atrazine commonly found in agricultural streams and rivers caused reduced reproduction and spawning, as well as tissue abnormalities in laboratory studies with fish,” said USGS scientist Donald Tillitt, Ph.D., the lead author of the study, “Atrazine Reduces Reproduction in Fathead Minnow (Pimephales promelas)” published in Aquatic Toxicology. Fathead minnows were exposed to atrazine at the USGS Columbia Environmental Research Center in Columbia, Missouri, and observed for effects on egg production, tissue abnormalities and hormone levels. Fish were exposed to concentrations ranging from zero to 50 micrograms per liter of atrazine for up to 30 days. All tested levels of exposure are less than the EPA Office of Pesticides Aquatic Life Benchmark of 65 micrograms per liter for chronic exposure of fish. Study results show that normal reproductive cycling was disrupted by atrazine and fish did not spawn as much or as well when exposed to atrazine. Researchers found that total egg production was lower in […]

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28
May

New Study Links Occupational Pesticide Exposure to Alzheimer’s Disease, Dementia

(Beyond Pesticides, May 28, 2010) The repeated exposure to organophosphate and organochlorine insecticides can increase the risk of developing Alzheimer’s Disease (AD) or dementia later in life according to a new study published in the May issue of Neurology. The observational study entitled “Occupational exposure to pesticides increases the risk of incident AD” is one of very few studies to examine a link between pesticides and AD. Researchers lead by Kathleen M. Hayden, PhD of Duke University Medical Center examined residents 65 years and older from an agricultural community in Cache County Utah. Participants were assessed for cognitive ability at the inception of the study and again after 3, 7, and 10 years. Data showed that those repeatedly exposed to any pesticides were more likely to develop AD or dementia. Researchers found a higher incidence of AD among those exposed to organophosphates and organochlorines. The risk of AD associated with organophosphate exposure was slightly higher than the risk associated with organochlorines. Researchers also found an increase in dementia among those exposed to organophosphates or organochlorines; however this increase was not statistically significant. Dr. Hayden said that more research was necessary to determine a causal link. Organophosphates are known to reduce […]

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27
May

LEED-Certified Green Buildings Fail to Protect Human Health

(Beyond Pesticides, May 27, 2010) A new report showcases the pitfalls of the U.S. Green Building Council’s LEED certification program in regards to protecting human health from environmental hazards. The report, “LEED Certification: Where Energy Efficiency Collides With Human Health,” put out by Environment and Human Health, Inc. (EHHI), warns that the LEED certification gives a false impression of a healthy and safe building environment and offers recommendations for the program to become more protective of human health. EHHI found that LEED standards have been incorporated into many federal, state and local laws, and many other corporations and other institutions have adopted LEED standards as well. Although this has encouraged energy efficiency in buildings, according John Wargo, Ph.D., lead author of the study and professor of Risk Analysis and Environmental Policy at Yale University, it has been implemented without fully understanding that energy conservation efforts often reduce the exchange of indoor and outdoor air, which can cause synthetic chemicals to concentrate within buildings. “Tighter buildings often concentrate chemicals released from building materials, cleaning supplies, fuel combustion, pesticides and other hazardous substances,” he said. Energy efficiency is given a high priority over health. The report found that about four times as […]

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26
May

Ask Your Local Retailers to Stop Selling Triclosan Products

(Beyond Pesticides, May 26, 2010) Beyond Pesticides has drafted sample text (see below), and we need your help to deliver a letter to your local supermarket, cosmetics store or co-op asking them to stop selling products that contain triclosan. Hundreds of products containing the antibacterial chemical triclosan decorate the shelves of retail stores across the country. From hand soap and toothpastes, to toys and yoga mats, triclosan is everywhere. Product labels will read “triclosan,” “triclocarban” (a related compound found in bar soaps) or “Microban” (a formulation of triclosan used in plastics and fabrics). It is time to take action and demand that this endocrine disrupting chemical is removed from the products we use and love. When consumers demand more for their health and well-being, retailers and manufacturers of triclosan products must listen. Triclosan, which has a similar chemical structure as dioxin, is linked to various health and environmental problems. It is associated with skin irritation, has been shown to interfere with the body’s hormones, and has been linked to an increased risk of developing respiratory illness, or asthma, and cancer, as well as subtle effects on learning ability. Because the chemical goes down the drain, it wreaks havoc with the […]

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25
May

Study Links Heptachlor, PCBs and Form of Vitamin E to Diabetes

(Beyond Pesticides, May 25, 2010) An analysis of 266 potential environmental contributors to type 2 diabetes published May 20, 2010 in the online edition of the journal PLoS ONE, links the disease to individuals who have higher levels of polychlorinated biphenyls (PCBs) and the pesticide heptachlor, as well a form of vitamin E found at high levels in soybean and corn oil, in their bodies compared to the general population. PCB was banned in 1979 and most uses of heptachlor were canceled between 1978 and 1989 (except for limited control of fire ants, which continues), but the compounds persist in the environment, especially near former industrial sites or contaminated soil. Environmentalists point to the fact that chemicals banned decades ago are still increasing people’s risk of disease, as a reason to take a precautionary approach when evaluating and registering chemicals. The analysis, led by Atul Butte, MD, PhD, assistant professor of medical informatics and pediatrics at the Stanford University School of Medicine, drew on data collected by the Centers for Disease Control and Prevention as part of the National Health and Nutrition Examination Survey (NHANES) to examine a wide range of environmental influences on type 2 diabetes. Dr. Butte conceived […]

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24
May

Beyond Pesticides Launches Mosquito Prevention Radio PSA’s

(Beyond Pesticides, May 24, 2010) It’s that time of year again when mosquitoes start breeding and biting, so Beyond Pesticides is releasing a new radio Public Service Announcement (PSA) on how to prevent mosquitoes and toxic pesticides from pestering you. Please send the mosquito prevention PSA below to your local radio station to help spread the word to others and keep your community mosquito- and pesticide-free. Let us know by email or Facebook the radio station’s name, city and state so we can follow-up! Mosquito Prevention PSA (30-seconds) “Want to know how to protect yourself and your family from mosquitoes and toxic chemicals? Start by dumping standing water around your home and using only safe, pesticide-free insect repellants. Be sure to avoid repellents containing DEET as it can react with other commonly used chemicals as well as with certain medicines. For more information and to get your community to adopt safer mosquito management strategies, call 202-543-5450 or go to www.beyondpesticides.org/mosquito. A public service message from Beyond Pesticides.” Background Everyone can take a part in preventing mosquitoes. To start with, the best way to manage mosquitoes is to eliminate standing water as it provides the perfect breeding ground for mosquitoes. Remove […]

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21
May

Child Safe Playing Field Act Signed into Law by New York Governor

(Beyond Pesticides, May 21, 2010) Governor Patterson of New York signed the Child Safe Playing Field Act into law on Tuesday, marking a huge victory for grassroots environmental and human health groups. The law helps to protect children by banning the use of pesticides on school playing fields and play grounds. Schools will have one year to comply with the regulations. In New York and across the country, schools routinely apply pesticides and “weed and feed” products (pesticides mixed with chemical fertilizers), which are linked to cancer, endocrine disruption, learning disabilities, asthma and other problems. Strong opposition from the pesticide industry had led to a previous version of the bill being defeated nine times. While the earlier versions of the legislation included all outdoor school grounds, the scope was narrowed to include only playgrounds and playing fields to help ensure passage. In addition, over 8,000 letters were sent to legislators in favor of the bill and over 18,000 people signed a petition, according to Citizens Campaign for the Environment. The Child Safe Playing Field Act requires that all schools, preschools, and day care centers both public and private to stop using pesticides on any playgrounds or playing fields. The law […]

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20
May

Dioxins from Triclosan Increasingly Found in Water

(Beyond Pesticides, May 20, 2010) Dioxins derived from the antibacterial agent triclosan account for an increasing proportion of total dioxins found in water: researchers at the University of Minnesota found that though levels of all other dioxins have dropped by 73-90% over the last thirty years, the levels of four different dioxins derived from triclosan have risen by 200-300%. The study, which was a collaborative effort between researchers at the University of Minnesota, Pace Analytical (Minneapolis), the Science Museum of Minnesota and Virginia Tech appears in the journal Environmental Science and Technology. Leading the research is the recent Ph.D. graduate in chemistry, Jeff Buth and supervisors William Arnold, a civil engineering professor, and his colleague Krostopher McNeill, all from University of Minnesota. Researchers looked at sediment core samples that contained pollution accumulation records from the past 50 years from Lake Pepin, a part of the Mississippi River 120 miles downstream from the Minneapolis-St. Paul metro area. The sediment samples were then analyzed for triclosan, the four dioxins that are derived from triclosan and the entire family of dioxin chemicals. In papers published in 2003 and 2009, Dr. Arnold and Dr. McNeill discovered that triclosan, when exposed to sunlight, generated a […]

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19
May

EPA Imposes Pesticide Limits to Protect Salmon in Spite of Industry Refusal to Comply

(Beyond Pesticides, May 19, 2010) EPA has announced plans to place additional limitations on the use of three N-methyl carbamate pesticides — carbaryl, carbofuran and methomyl — to protect endangered and threatened salmon and steelhead in California, Idaho, Oregon and Washington, in compliance with the Endangered Species Act. The decision comes after manufacturers of the chemicals diazinon, malathion and chlorpyrifos refused to adopt the limits voluntarily. The new protections are based on recommendations by the National Marine Fisheries Service (NMFS) in their April 2009 Biological Opinion relative to use of the three pesticides to ensure no likely jeopardy to 28 threatened or endangered Pacific salmon and steelhead species. In a May 14, 2010 letter to NMFS, EPA explains how the Agency plans to achieve protection goals through the methods outlined by NMFS in the Biological Opinion or by alternative methods that EPA’s scientific analyses determined will achieve the same purpose. For example, EPA will require pesticide drift buffers adjacent to salmon and steelhead habitat but will impose different width buffers, some wider and others narrower than those recommended by NMFS, depending on factors that affect how far the pesticide might drift from the application site. In correspondence to the EPA […]

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18
May

Everyday Exposure to Pesticides Linked to Attention-Deficit Hyperactivity Disorder

(Beyond Pesticides, May 18, 2010) A team of scientists from the University of Montreal and Harvard University have discovered that exposure to organophosphate pesticides is associated with increased risk of Attention-Deficit Hyperactivity Disorder (ADHD) in children. Using data from the National Health and Nutrition Examination Survey, the study focused on 1,139 children from the general U.S. population and measured pesticide breakdown product levels in their urine. The authors conclude that exposure to organophosphate (OP) pesticides, at levels common among U.S. children, may contribute to a diagnosis of ADHD. “Previous studies have shown that exposure to some organophosphate compounds cause hyperactivity and cognitive deficits in animals,” says lead author Maryse F. Bouchard, a professor at the University of Montreal Department of Environmental and Occupational Health and scientist at the Sainte-Justine Hospital Research Center. “Our study found that exposure to organophosphates in developing children might have effects on neural systems and could contribute to ADHD behaviors, such as inattention, hyperactivity, and impulsivity.” Marc Weisskopf, PhD, ScD, another study author told Reuters, “What this paper specifically highlights is that this may be true even at low concentrations.” For children with a 10-fold increase in the concentration of the most common dialkyl phosphate metabolites […]

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17
May

Evanston, IL Passes Pesticide Reduction Policy

(Beyond Pesticides, May 17, 2010) The City of Evanston in Cook County, Illinois has passed a resolution to reduce pesticide use on City-owned and leased property (buildings and grounds) when the City Council unanimously adopted the “Sustainable Pest Control and Pesticide Reduction Policy” on April 26, 2010. The policy requires City employees, agents and contractors to follow natural lawn care and “least-toxic Integrated Pest Management” (IPM) and prohibits high hazards pesticides. It shouldn’t be too difficult for the City, as according to Evanston’s website, the City “has been applying minimal to no pesticides or insecticides in its municipal parks and on City owned properties since the early 1990s.” IPM is described in the policy as, “A pest management technique that gives preference to the safest pest control methods and uses conventional chemical pesticides only when no other feasible alternative exists. It addresses the underlying causes of pest problems, and seeks to find effective long-term solutions that emphasize prevention.” The City will hold a training session at least once every two years for managers and staff responsible for pest management on City property. All contractors engaged in pest management on City property are also required to attend the trainings or must […]

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14
May

Organic Corporate Gardens Is the New Trend in Employee Benefits

(Beyond Pesticides, May 14, 2010) As the current economic climate forces spending cuts on health benefits, salaries, and bonuses, many companies are offering their employees a trendy new perk: an organic corporate garden. The New York Times reports that dozens of companies from various industries have started or plan to start organic gardens for their employees. Employees may spend a few lunch breaks planting, weeding, and watering, in exchange for all the fresh beans, tomatoes, and zucchini they want. Some of these gardens also supply the company cafeteria, or the local food bank. Companies have put container gardens on rooftops, converted former smoking areas, or simply dug into the office park lawns. In some cases employees lobbied for a garden in others it was a manager that decided to create one. It may come as no surprise that famously progressive companies such as Google have created gardens for its employees but more traditional companies have also joined in the trend. PepsiCo, the $60 billion manufacturer of highly processed products, including Mountain Dew, Amp Energy Drink, Doritos, and Cap’n Crunch, has created an organic garden a five minute walk from corporate headquarters in Purchase, New York. The garden at Kohl’s Department […]

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13
May

DEET-Resistant Mosquitoes Can Pass Trait to Offspring

(Beyond Pesticides, May 13, 2010) Recent tests find that mosquitoes that are insensitive to DEET, the pesticide commonly used to repel the pesky flying insect, can pass this characteristic as a genetic trait onto their offspring. The findings are published in the May 3 edition of the journal Proceedings of the National Academy of Sciences. In order to hunt for blood, female mosquitoes use their antenna to locate humans; however, according to researchers, DEET temporarily destroys an insect’s sense of smell by hindering the function of certain odor receptors. The researchers observed which insects bit DEET-treated human arms and discovered that a gene alteration prohibited a sensory cell on the bugs’ antennae from detecting the chemical. “There is something in the antenna they use to smell that reacted differently,” Dr. Nina Stanczyk of Rothhamstead Research, an agricultural research center in the U.K., told the Toronto Star. Scientists studied one species of DEET-insensitive mosquitoes, the Aedes aegypti, a species that carry the diseases yellow fever and dengue fever. When mutated females were bred with males of unknown sensitivity in tests, the quantity of mosquitoes that were insensitive to DEET rose from 13 to 50 percent in one generation. Though scientists are […]

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