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Zika Virus, Environmental Justice, and Unforced Errors

By Kaley Beins

Over the past few months the mosquito-borne Zika virus has been dominating global health headlines, especially as researchers began linking it to microcephaly, a birth defect where babies are born with abnormally small heads and potential brain damage. Though Zika virus itself has fairly mild symptoms and is sometimes even asymptomatic, its connection to microcephaly created pandemonium. As the Center for Disease Control and Prevention (CDC) began issuing travel warnings and El Salvador recommended that women not get pregnant until the virus is controlled (estimated to take 2+ years), panic began to set in. The World Health Organization (WHO) declared a “Public Health Emergency of International Concern” scientists began developing a Zika vaccine and the world prepared for the next Ebola crisis.

Yet this past week some news outlets summarized a new Argentine report claiming that an insecticide, not Zika virus, is to blame for the increase in cases of microcephaly in Brazil. This report, written by doctors from the Argentine group Physicians in the Crop-Sprayed Villages, claims widespread exposure to the insecticide pyriproxyfen is the cause of these birth defects. Beginning in 2014, Brazil added pyriproxyfen to its water supply to prevent mosquito development. The report states that this insecticide is dangerous and is distributed by “a subsidiary of Monsanto.” (Note: the company that produces pyriproxyfen is Sumitomo Chemical, a Japanese company that is actually not a subsidiary of Monsanto, but has partnered with them in the past.)

The story told by Physicians in the Crop-Sprayed Villages has the makings of the next Erin Brockovich case, fueling the ongoing fights against Monsanto and validating the outrage leveled at chemical companies. There’s just one problem: it doesn’t appear to be true.

Unlike WHO and that majority of the scientific community that are continuing to do research on the potential link between Zika virus and microcephaly before saying anything definitive, Physicians in the Crop-Sprayed Villages published their report based on a correlation and only 12 sources (many of which were articles about dengue).

Although a definitive link between Zika virus and microcephaly still has not been found, a growing body of research appears to support the connection. Most significantly, a Brazilian study released this week found Zika virus in the amniotic fluid of babies with microcephaly, while previous studies have detected the virus in newborn saliva and urine. The CDC reported on a study that found the presence of Zika virus in the brains and placenta of babies that had died of microcephaly. Even when Zika virus was first explained in 1952 by G.W.A. Dick, he described how it affected the brain and the nervous system. The research has provided a mechanism, or process of causation, for Zika inducing microcephaly.

Conversely, the only mechanism the Argentine report provides is claiming that the insecticide pyriproxyfen is an endocrine disruptor (affects hormones and development) and therefore would affect pregnancy. However, pyriproxyfen affects the development from hatching to pupation, stages humans (and all animals with backbones) do not go through. Therefore, pyriproxyfen is highly unlikely to affect people.

Furthermore, even if we disregard the lack of science in the Argentine report, we can address their allegations. The main claim in the report is that the increased instance of microcephaly is found only in Brazil, where pyriproxyfen was used. While it is strange that Colombia does not yet appear to have increased rates of microcephaly, George Dimech, director of Disease Control and Diseases of the Health Department in Pernambuco, Brazil, stated that Recife, Brazil has had many cases of microcephaly, despite the fact that pyriproxyfen is not used there. Additionally, the 2013-2014 outbreak of Zika virus in French Polynesia has also been associated with central nervous system problems including Guillain-Barré Syndrome and microcephaly.

Various prominent scientists worldwide have disputed the allegations raised by Physicians in the Crop-Sprayed Villages. Dr. Ian Musgrave, a toxicologist at Australia’s University of Adelaide called their argument “not plausible,” while NIH Director, Dr. Francis Collins, referred to the report as “sketchy.” Environmental activist Mark Lynas called it a “conspiracy theory.”

Science is difficult and public health risks add to the confusion that further compounds the difficulty of scientific testing. There are still unknowns regarding Zika virus and its connection to microcephaly, and looking for alternative explanations and environmental factors is necessary in order to address the risks. However, publishing claims with little scientific support does nothing for environmental health. Unsubstantiated research is not only academically unethical; it allows the crucial field of environmental health to descend into pseudo science and conspiracy theory.

The Physicians in the Crop-Sprayed Villages report does make an important point that mosquito-borne viruses are much more prevalent in low-income communities because of fewer sanitation initiatives and less readily available potable water (a claim further substantiated by the Zika case in Texas). They connect the Zika outbreak to environmental justice. Environmental justice issues are significant and must be addressed, but jumping to conclusions without solid scientific backing hurts the movement. Without science to support our positions, industry and government can easily brush off our (very valid) concerns from pesticide use to landfill leaching. The Physicians in the Crop-Sprayed Villages report is an unforced error; it makes us look like we have an agenda other than protecting human health.

Science is our strongest weapon. Why are we shooting ourselves in the foot with it?

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Backyard Talk

Snowmageddon 2016 Brought to You by Climate Change

By: Katie O’Brien

Mega winter storm Jonas, also referred to as Snowzilla or Snowmageddon, is just starting to hit the Eastern U.S. The D.C. metro area (where CHEJ is located!) is the bull’s-eye of the storm, expecting up to a whopping 30 inches. It is expected to snow for about 36 hours and will affect over 60 million people. Many of these people are under a blizzard warning, meaning the storm will have long hours of strong wind gusts and extreme reduced visibility. In some areas it will snow at a rate of 2-3 inches per hour. The DC area has not seen this much snow in the forecast since 1922.


But why have storms such as Jonas, and others like Superstorm Sandy become so severe? Many scientists believe that human induced climate change is to blame.  The Director of Penn State’s Earth Systems Science Center, Michael Mann, says that “unusually warm Atlantic ocean surface temperatures” can cause high amounts of moisture in the air and are contributing to these severe storms.

“When you mix extra moisture with “a cold Arctic outbreak (something we’ll continue to get even as global warming proceeds) you get huge amounts of energy and moisture, and monster snowfalls, like we’re about to see here”, says Mann.

Scientists are in the process of completing additional studies showing that climate change is causing the increased length and severity of these life-threatening storms. Many of them believe that climate change is altering the patterns of weather by affecting the jet streams in which they travel. This slows down storms immensely, causing heavy precipitation to essentially “dump” on certain areas at increased rates. Climate change is changing our world in big ways.

While some may use huge snowstorms like Jonas to deny climate change, this storm actually supports climate change science.

It’s time to fight back against the affects of climate change. Click here to learn more about how you can personally reduce your carbon footprint.

Click here to learn more about climate change and Blizzard Jonas.

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Backyard Talk

New Study Highlights Reproductive Risks from Fracking Chemicals

Could pollution from unconventional oil and gas drilling cause reproductive problems? Scientists at the University of Missouri are trying to answer this question. A study published yesterday in the journal Environmental Health Perspectives assessed the research so far on endocrine disrupting compounds (EDCs) in chemicals used for hydraulic fracturing. The study presented research linking fracking to EDCs, and the authors recommended an increased focus on these compounds in assessing health risks from fracking pollution.

Endocrine disrupting compounds are a class of chemicals that can alter the delicately balanced endocrine system of the human body, interfering with processes involved in development and reproduction. Some EDCs prevent the endocrine system from carrying out normal functions, while others can mimic hormones naturally found in the body and cause increased endocrine activity. As the study authors note, EDCs are of particular concern because they can have effects at very low concentrations, especially during the early stages of development. Small doses of EDCs can cause drastic health changes, some of which can persist across generations.

One section of the study looked at the endocrine disrupting properties of individual chemicals in fracking fluid. Unfortunately, the identities of many of the approximately 1000 chemicals used in the fracking process are kept under wraps by industry, limiting the extent to which scientists can test any of the health effects they present. Of the chemicals the researchers were able to test, many had endocrine-disrupting properties. When the scientists assessed water samples from areas where drilling-related spills had occurred, they also found elevated endocrine disrupting activity. Chemicals involved in fracking processes are associated with reproductive effects, adverse pregnancy outcomes, and cancer, and several epidemiological studies cited in the paper found elevated risks for these problems in drilling-dense areas.

The study also focused on identifying gaps in our knowledge of EDCs in fracking chemicals. While our understanding of the impacts of individual chemicals is growing, we need to develop better methods for predicting and assessing how these chemicals might interact as part of a complex mixture, where the presence of multiple compounds could result in a more potent disruptive effect than that of one chemical alone. By studying concentrations of EDCs and their byproducts in people’s systems, we can determine what chemicals people are actually exposed to, and gather better information on whether these exposures are related to long-term health issues.

Overall, the study concluded that fracking health studies should include a significant focus on endocrine disrupting compounds. Among the many risks presented by fracking, exposure to complex mixtures of EDCs in the environment may prove to have extraordinary longterm effects.

Learn more:  http://ehp.niehs.nih.gov/wp-content/uploads/advpub/2015/8/ehp.1409535.acco.pdf

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Backyard Talk

Climate Science vs Public Education

By: Carmen Mann

The No Child Left Behind Act, a George W. Bush-era law that had been in place for the last 14 years, is currently being revised by the House and the Senate. This Act is the main law when considering K-12 education in the U.S., and efforts by Congress in the past to revise the Act have repeatedly failed. The House and the Senate recently passed their own perspective bills to revise No Child Left Behind, setting up a showdown between the two chambers of Congress once again and leaving the fate of a final revision in doubt.

During debate over legislation to replace No Child Left Behind, Edward Markey, a Democratic Senator from Massachusetts, proposed a program that would encourage schools to teach more about climate change and climate science. The proposal by Senator Markey would include a competitive grant program for public schools to apply for that would provide federal funds to help teach about climate change. Arguably, this program would help equip the next generation to deal with the effects of climate change, through improved scientific education.

However, many concerns were voiced over the idea that the federal government would have power over what schools would be required to teach concerning climate change. The most prominent concern was that the curricula would be vulnerable to the shifting politics of the federal government. Senator Lamar Alexander (R-Tenn.), the co-author of the main bill to replace No Child Left Behind, articulated this when he said “Just image what the curriculum on climate change would be if we shifted from President Obama to President Cruz and then back to President Sanders and then to President Trump.”

Imagine having to re-write or change textbooks every time there was a presidential election. It would be a waste of paper and, ironically, bad for the environment. The proposal was ultimately defeated by the Senate in a 53-44 vote this past Wednesday.

The failure of this program to pass the Senate does not mean that schools are not allowed to teach the science of climate change, it means that the federal government will not provide incentives or extra financial support for those that do. What public schools can and cannot teach is usually decided upon by the states themselves.

So far, 13 states have adopted the Next Generation Science Standards (NGSS), meant to develop greater interest and provide students with an internationally benchmarked science education. These standards recommend climate change education beginning in middle school. However, other states have resisted efforts to include climate science in public school curricula. For example, Wyoming rejected the NGSS after the Board of Education chairman for the state said he did not accept that climate change was a fact.

Including climate science in public education can help a younger upcoming generation better understand and address the impact of climate change. Education could be an avenue to encourage and change attitudes to help the next generation become more environmentally aware and involved in climate-change related trends. The inclusion of climate change in public education will continue to be a hot spot of debate when considering American education in the future.

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Health Studies: What you can expect and what you can do

Whether your group is new or has been organized for years, one of the most pressing questions you’ll face is about health problems in your community. Typically, if you raise enough public attention and pressure, the state will ask the Agency for Toxic Substances and Disease Registry (ATSDR) to do a health study. While you may initially be excited, be careful what you ask for. ATSDR has a poor track record at investigating health problems in communities. You are more likely to get a result that is “inconclusive by design” than you are to get an honest answer to your questions. At least that’s what history tells us.

You can expect at least two things from ATSDR: First, the agency is going to treat your community like every other community that they have gone into. Second, ATSDR is going to use the standard methods they use to evaluate and investigate the health problems in your community.  Unfortunately, these scientific methods cannot answer with any accuracy or assurance the questions that people have about health problems in their community. The best state-of-the-art scientific methods that ATSDR will use cannot determine what’s causing an increase in cancer, birth defects or any other adverse effect in a population of people.

In 99 out of 100 instances, health studies conducted by ATSDR or other government agencies are inconclusive or at best incapable of determining what might be causing an observed increase in a disease found in a community. Given this likely outcome, it’s critical to have a plan for how to get the most from a health study done in your community.

One important step is to define as a community what you want. Do you want a typical epidemiological study where a questionnaire is distributed throughout the community asking about health problems and the results are then compared to a matched unexposed community? Do you want a clinic set up in the community where people could be tested to evaluate their health? Maybe some portion of the community wants to be relocated or evacuated and you want ATSDR to recommend such action.

Once you’re clear on what you want, then you need to figure out how to achieve these goals. This will take some strategic planning and a strong organized community effort. Ask these three questions about the health study, the answers to which will give you a good sense of the intent of the investigators and the limits of the study:

  • What are the goals of the investigation?
  • How will the investigators get the information they need?
  • How are they going to release the results?

Based on what you find out, you may decide that you don’t want to participate in this study. Or you may decide you want to change the agency’s plan to something that will be useful to your group. Changing their plan will require a strong organized community effort and a plan to get your points across to the agency. CHEJ can help you develop a plan to address a health study. Contact us at chej@chej.org

Also, tune in tomorrow at 12 noon EST to participate in a training session on Health Studies: What can they tell you about health problems in your community?


(RSVP Online Now
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Backyard Talk

Grassroots Activism Makes the Difference in New York

Right before Christmas, the Washington Post ran an interesting article you may have missed. It laid out the conundrum of two states coming to very different conclusions about fracking within its boundaries. Both states, New York and Maryland, had moratoriums in place and were evaluating pretty much the same technical and scientific information, yet they came to very different conclusions.

In New York, Governor Andrew Cuomo chose to ban the practice of hydraulic fracturing or “fracking” in New York State. Fracking is the process of injecting a chemical/water mixture under extreme pressure deep into the earth in order to “fracture” rock and release natural gas (or oil). Cuomo’s decision followed a report from the New York Department of Health that found “significant public health risks” associated with fracking including concerns about water contamination and air pollution. In a press statement, the state health commissioner stated that there was “insufficient scientific evidence to affirm the safety of fracking.”

On the other hand, Maryland Governor Martin O’Malley decided to allow fracking go forward in the western part of the state. This decision was based on a joint report from  the Maryland Departments of the Environment and Natural Resources, which concluded that with adequate regulation, “the risks of Marcellus Shale development can be managed to an acceptable level.” Both reports acknowledged that there are risks from fracking, due primarily to groundwater and air contamination, but also that there is a great deal that is not known about the extent of these risks, or the long term effects.

The articles concludes “that these two decisions on fracking, while draped in scientific language, were — in fact — probably not really scientific decisions at all.” Thank you Washington Post for pointing out what grassroots activists have known for years – that most decisions about environmental risks are based on political, economic and other factors, and not on available science, no matter what anyone tells you.

The article goes on to attribute the different decisions to four factors – politics, who did the studies for each state, the amount of land affected and the use of the precautionary principle by one state (NY) and not the other. All these factors liked came into play, but there‘s another factor not mentioned that likely played an even larger role, and that is the role of grassroots activism. In New York, grassroots activists were overwhelmingly opposed to fracking and this position was repeatedly made known to Cuomo and other state decision-makers. Since being elected in 2010 Cuomo could not go anywhere in the state without seeing signs asking him to ban fracking. This message was delivered time after time by numerous groups in New York as well as by celebrities, scientists and others.

The lesson here isn’t that reasonable agencies and state governors came to different decisions based on different evidence and information. It’s that the grassroots activism in New York made a huge difference and helped convince Cuomo and other decision makers in the state that there was enough known about the risks posed by fracking not to move forward and that the unknown risks were too serious to ignore.