Common Herbicide Linked to Cancer and Hormone Disruption
As the U.S. Environmental Protection Agency (EPA) reconsiders the science on atrazine, new findings highlight the link between low-level exposure to the nation’s most widely used herbicide and adverse human health effects, including cancer and altered hormones. At the same time, the chemical’s manufacturer, Syngenta, continues to influence scientific analysis of the chemical, downplaying evidence showing that atrazine is harmful.
“Syngenta has misrepresented and obscured the science, leading federal officials and the scientific community astray as we look to understand the full scope of the atrazine problem,” said Dr. Margaret Reeves, Ph.D., senior scientist at Pesticide Action Network. “EPA’s decision-making on atrazine should follow the science. That’s the best way to ensure farmers, farmworkers and rural communities are protected.”
Atrazine is found more often than any other pesticide in groundwater—almost 95 percent of U.S. groundwater contains the chemical. The weed killer is one of the most widely used pesticides in the U.S.—and the world. More than 76 million pounds are used in the U.S. each year, mostly on Midwestern corn fields.
The EPA closes another public comment period on atrazine Nov. 14, even as increasing evidence comes to light about the dangers the chemical poses to human health. Earlier findings already document birth defects, delayed puberty and infertility. These new findings suggest a greater relationship between atrazine exposure, increased rates of cancer and hormonal disruption in women.
In one new study published in Environmental Science, researchers suggest that women in agricultural communities in Illinios, the epicenter of nation’s corn belt where atrazine is used extensively, tend to have more irregular menstrual cycles than women living in rural communities where atrazine is sparingly used. The women in the study consumed atrazine in their water at levels well below the federal legal limit. In fact, the maximum level of atrazine observed in the study was less than one-third the legal maximum.
EPA also just released minutes from the July meeting of its independent scientific advisory panel, which is concluding an 18-month review of atrazine’s health and environmental effects. The panel forcefully called into question EPA’s conclusion that atrazine is “not likely to be a human carcinogen.” The scientists criticized the agency for grouping all types of cancers together, and called on EPA “to make conclusions for individual cancers." They point to "suggestive evidence of carcinogenic potential" for ovarian cancer, non-Hodgkin's lymphoma, hairy-cell leukemia and thyroid cancer.
Earlier Nov. 14, Pesticide Action Network submitted more than 5,000 petition signatures to EPA urging the agency to “discount and disclose the corporate backing of atrazine.” The petition calls for greater transparency in EPA evaluation of the chemical, as the agency held 50 closed-door meetings with Syngenta prior to the last review of the chemical. But the company’s influence doesn’t stop at meetings.
Dr. Jason Rohr, a scientist from University of South Florida, took a look at industry-funded reviews of the effects of atrazine on fish and frogs, indicators of impacts on human health, and he found:
[The] industry-funded review misrepresented more than 50 studies and included 122 inaccurate and 22 misleading statements. Of these inaccurate and misleading statements, 96.5 percent seem to benefit the makers of atrazine in that they support the safety of the chemical.
Dr. Rohr’s analysis underscores what members of the Midwest agricultural community have been saying all along. “As farmers on the front line of chemical exposure we need EPA to make science-based decisions in the interest of our health, our family’s health and the health of our community,” said Paul Sobocinski, a southwest Minnesota crop and livestock farmer and Land Stewardship Project member. “Unfortunately, EPA has a track record of allowing agrichemical companies like Syngenta to hijack the process with bad science. I discontinued use of atrazine on my corn crop a number of years ago because of health and environmental concerns.”
Syngenta’s tactics to protect atrazine are nothing new. The company has intimidated scientists, pressured regulators and paid economists to manufacturer faulty studies in efforts to keep their flagship product on the market.
Find a copy of the report The Syngenta Corporation & Atrazine: The Cost to the Land, People & Democracy by Land Stewardship Project and Pesticide Action Network by clicking here.
For more information, click here.
By Kimberly Nicole Pope
During this year's Davos Agenda Week, leaders from the private and public sectors highlighted the urgent need to halt and reverse nature loss. Deliberate action on the interlinked climate and ecological crises to achieve a net-zero, nature-positive economy is paramount. At the same time, these leaders also presented a message of hope: that investing in nature holds the key to ensuring economic and social prosperity and resilience.
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EcoWatch Daily Newsletter
By Brett Wilkins
While some mainstream environmental organizations welcomed Tuesday's introduction of the CLEAN Future Act in the House of Representatives, progressive green groups warned that the bill falls far short of what's needed to meaningfully tackle the climate crisis—an existential threat they say calls for bolder action like the Green New Deal.
<div id="25965" class="rm-shortcode" data-rm-shortcode-id="6116a1c2b1b913ad51c3ea576f2e196c"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1366827205427425289" data-partner="rebelmouse"><div style="margin:1em 0">BREAKING: Rep @FrankPallone just released his CLEAN Future Act — which he claims to be an ambitious bill to combat… https://t.co/M7nR0es196</div> — Friends of the Earth (Action) (@Friends of the Earth (Action))<a href="https://twitter.com/foe_us/statuses/1366827205427425289">1614711974.0</a></blockquote></div>
<div id="189f0" class="rm-shortcode" data-rm-shortcode-id="aa31bacec80d88b49730e8591de5d26d"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1366863402912657416" data-partner="rebelmouse"><div style="margin:1em 0">The CLEAN Future Act "fails to grasp the fundamental truth of fighting climate change: We must stop extracting and… https://t.co/yREn6Qx9tn</div> — Food & Water Watch (@Food & Water Watch)<a href="https://twitter.com/foodandwater/statuses/1366863402912657416">1614720605.0</a></blockquote></div>
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- Redwoods are the world's tallest trees.
- Now scientists have discovered they are even bigger than we thought.
- Using laser technology they map the 80-meter giants.
- Trees are a key plank in the fight against climate change.
They are among the largest trees in the world, descendants of forests where dinosaurs roamed.
Pixabay / Simi Luft<p><span>Until recently, measuring these trees meant scaling their 80 meter high trunks with a tape measure. Now, a team of scientists from University College London and the University of Maryland uses advanced laser scanning, to create 3D maps and calculate the total mass.</span></p><p>The results are striking: suggesting the trees <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">may be as much as 30% larger than earlier measurements suggested.</a> Part of that could be due to the additional trunks the Redwoods can grow as they age, <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">a process known as reiteration</a>.</p>
New 3D measurements of large redwood trees for biomass and structure. Nature / UCL<p>Measuring the trees more accurately is important because carbon capture will probably play a key role in the battle against climate change. Forest <a href="https://www.wri.org/blog/2020/09/carbon-sequestration-natural-forest-regrowth" target="_blank">growth could absorb billions of tons</a> of carbon dioxide from the atmosphere each year.</p><p>"The importance of big trees is widely-recognised in terms of carbon storage, demographics and impact on their surrounding ecosystems," the authors wrote<a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank"> in the journal Nature</a>. "Unfortunately the importance of big trees is in direct proportion to the difficulty of measuring them."</p><p>Redwoods are so long lived because of their ability to <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">cope with climate change, resist disease and even survive fire damage</a>, the scientists say. Almost a fifth of their volume may be bark, which helps protect them.</p>
Carbon Capture Champions<p><span>Earlier research by scientists at Humboldt University and the University of Washington found that </span><a href="https://www.sciencedirect.com/science/article/pii/S0378112716302584" target="_blank" rel="noopener noreferrer">Redwood forests store almost 2,600 tonnes of carbon per hectare</a><span>, their bark alone containing more carbon than any other neighboring species.</span></p><p>While the importance of trees in fighting climate change is widely accepted, not all species enjoy the same protection as California's coastal Redwoods. In 2019 the world lost the equivalent of <a href="https://www.worldwildlife.org/threats/deforestation-and-forest-degradation" target="_blank" rel="noopener noreferrer">30 soccer fields of forest cover every minute</a>, due to agricultural expansion, logging and fires, according to The Worldwide Fund for Nature (WWF).</p>
Pixabay<p>Although <a href="https://c402277.ssl.cf1.rackcdn.com/publications/1420/files/original/Deforestation_fronts_-_drivers_and_responses_in_a_changing_world_-_full_report_%281%29.pdf?1610810475" target="_blank" rel="noopener noreferrer">the rate of loss is reported to have slowed in recent years</a>, reforesting the world to help stem climate change is a massive task.</p><p><span>That's why the World Economic Forum launched the Trillion Trees Challenge (</span><a href="https://www.1t.org/" target="_blank" rel="noopener noreferrer">1t.org</a><span>) and is engaging organizations and individuals across the globe through its </span><a href="https://uplink.weforum.org/uplink/s/uplink-issue/a002o00000vOf09AAC/trillion-trees" target="_blank" rel="noopener noreferrer">Uplink innovation crowdsourcing platform</a><span> to support the project.</span></p><p>That's backed up by research led by ETH Zurich/Crowther Lab showing there's potential to restore tree coverage across 2.2 billion acres of degraded land.</p><p>"Forests are critical to the health of the planet," according to <a href="https://www.1t.org/" target="_blank" rel="noopener noreferrer">1t.org</a>. "They sequester carbon, regulate global temperatures and freshwater flows, recharge groundwater, anchor fertile soil and act as flood barriers."</p><p><em data-redactor-tag="em" data-verified="redactor">Reposted with permission from the </em><span><em data-redactor-tag="em" data-verified="redactor"><a href="https://www.weforum.org/agenda/2021/03/redwoods-store-more-co2-and-are-more-enormous-than-we-thought/" target="_blank">World Economic Forum</a>.</em></span></p>
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