Unintentional PFAS in products: A “jungle” of contamination

Toxic PFAS are often added into consumer products to make items stain- or water-resistant. But mounting evidence indicates that many products made without the intentional addition of PFAS are also contaminated.

Researchers say these products may unintentionally become contaminated with PFAS, short for per- and polyfluoroalkyl substances, during the manufacturing or distribution process, raising concerns about entry points of PFAS into the supply chain that are not yet fully understood.

PFAS are linked to negative health outcomes including some cancers, reproductive problems, and birth defects, among others. Some manufacturers, such as cosmetics companies, will disclose the addition of the chemicals so consumers can determine their own exposure.

What’s harder to avoid, however, are those products that contain PFAS even when the manufacturers themselves may not know. Because of the widespread use of PFAS across industries, there are many ways that these “forever chemicals” can contaminate consumer goods—including manufacturing lubricants and coatings, misidentified raw materials, pesticides, personal protective equipment, and plastic packaging.

Marta Venier, an assistant professor at Indiana University who studies the transport of PFAS, told EHN that the high number of uses of PFAS in manufacturing means that products move through a “jungle” of possible contaminations before reaching the consumer.

PFAS contamination during manufacturing

Venier said it’s possible that coatings or lubricants used on manufacturing equipment or in factories can contain PFAS, which then transfer to the products made in such facilities. In such cases, the level of PFAS that is transferred to the product is low, but detectable, said Venier. Venier and Miriam Diamond, an environmental chemist at the University of Toronto, mentioned conveyor belt lubricant as a possible PFAS source.

Rainier Lohmann, an atmospheric chemist at the University of Rhode Island, also pointed to the possibility of contamination from slip agents—substances used in manufacturing to help mass-produced products slide easily out of molds.

In order to manufacture plastic goods, plastic pellets are melted, then extruded through a nozzle into a mold. Justin Boucher, the operations director of the Food Packaging Forum, thinks this could also be an entry point for PFAS. “To keep the plastic from gunking up these nozzles, they’re adding some kind of additives that contain PFAS,” he told EHN.

“You can basically go through almost the entire manufacturing chain and find several instances where you have this possibility that somewhere, PFAS has contaminated a product,” Lohmann told EHN. “It’s very difficult to figure out where that’s from, because they’re so ubiquitous.”

In other instances, said Venier, manufacturers may unknowingly create products with raw material that contains PFAS. “[Some] manufacturers buy their chemical products from intermediaries,” she said. “So they think that they are buying intermediary products that are PFAS free, when, in reality, they are not.”
There can also be PFAS in personal protective equipment or clothing that workers in manufacturing plants or food processing plants wear, particularly in gloves, which Lohmann and Venier said could be a possible area of concern.

To understand how PFAS in worker clothing and on equipment can accidentally contaminate products, Lohmann uses the analogy of a muffin tin with non-stick spray. Before baking, one sprays the muffin tin; after baking, the muffin is removed—with an oily sheen coating the bottom.

That ease of transfer makes it difficult to determine exactly how products get contaminated.

Incidental PFAS in food products

A 2017 study by the Green Science Policy Institute tested about 400 pieces of food packaging and found indications of PFAS in 40% of the items. (Credit: hewy/flickr) Because PFAS bioaccumulates in mammals, unintentional contamination can be a concern in animal products as well. A 2019 study at the U.S. Department of Agriculture examined levels of PFAS in the blood and tissue of cattle in a New Mexico herd that was accidentally exposed to the toxics in contaminated water. Given the widespread nature of PFAS contamination in water, it is likely that similar unintentional exposure is a concern for animal agriculture across the country, said Venier.PFAS are also used in different parts of agriculture and land management. PFAS in pesticides that contaminated water in Pepperell, Massachusetts, last May came from a liquid-repellent coating on the inside of the container used to store the pesticides. There is not always proper communication between companies in the chemical supply chain, said Boucher, which can make it impossible to know whether PFAS exist in certain agricultural inputs. PFAS can also unintentionally contaminate food through packaging, specifically when packaging is made from recycled materials. Because PFAS are such persistent chemicals, they can accumulate in recycled paper or wood pulp, either because the recycled material was coated in PFAS or came into contact with PFAS unintentionally.A 2017 study by the Green Science Policy Institute tested about 400 pieces of food packaging and found indications of PFAS in 40% of the items. If recycled, such PFAS-containing food packaging products would be reconstituted into other PFAS-containing products, perhaps without the knowledge of the manufacturer. “So if you’re allowed to use recycled pulp in food contact, paper, and board packaging, and you don’t have total control or oversight over what material was recycled, you don’t always know what chemicals were present,” said Boucher. Whether or not manufacturers are able to monitor the levels of PFAS in wood or paper pulp they are buying, he said, is unclear.

What manufacturers can do about PFAS contamination 

Testing products for PFAS is still a relatively new field of science. However, some studies have indicated that non-intentional contamination is a growing problem.A 2021 study that tested hundreds of cosmetic products for PFAS found the chemicals in many products that didn’t list fluorinated compounds (an indicator of PFAS) in the ingredients, while other research has indicated that food packaging and paper products can contain non-intentionally added chemicals by way of certain inks and adhesives.In addition, recent testing by the wellness site Mamavation, partially supported by EHN.org, has found evidence of PFAS in makeup and clothing, including in many brands that are marketed as PFAS-free.The main problem, said Lohmann, is not necessarily manufacturer negligence but lack of awareness. Once manufacturers are aware that they are using PFAS in their manufacturing process, they can switch to alternative processing agents, like PFAS-free lubricants. There’s ample motivation for manufacturers to do this: “Being associated with PFAS is not something that most brands want to have these days,” he said. Boucher said manufacturers are “looking, and in some cases they’re finding, alternatives. My thinking is that the demand is going to grow for these PFAS-free alternatives across the whole processing chain.” While unintentional contamination usually results in low levels of PFAS on the consumer end, recognizing possible non-intentional entry points still provides an opportunity to limit exposure, which is especially important for people already experiencing high levels of PFAS. Additionally, said Diamond, the wide use of PFAS in manufacturing is already a concern for worker health. “We don’t spend enough time considering how the people who make our stuff are exposed,” she told EHN.From Your Site Articles

The UN is finally, maybe, doing something about plastic pollution

The UN has just signed a landmark agreement to reduce plastic pollution, in what some are calling the most important international environmental deal since the 2015 Paris agreement that targeted climate change.On Wednesday, marked by a gavel made from recycled plastics, representatives from 175 nations endorsed the agreement, which will act as the framework for discussions over the next two years. Worldwide, we produce 400 million tons of plastic a year, and that’s expected to double by 2040. If countries can stick to their commitments, it could lead to a massive reduction in single-use plastics, production levels, and ocean pollution.That’s a big “if”—while a lot of groups are cautiously optimistic, just like the Paris agreement, there are loopholes that countries could exploit. Here’s what you need to know about the agreement. What did the 175 countries actually agree to? “End plastic pollution: Towards an international legally binding instrument” is a series of loose resolutions promising to address the full life cycle of plastic products.It creates an intergovernmental negotiating committee, which will spend the next two years hashing out exactly how to tackle the plastic problem. Resolutions called for promoting sustainably designed products and materials, environmentally sound waste management, and financial support for developing countries.At the next UN Environment Assembly in 2024, the committee will finalize the agreement. “What we laid out was, in the easiest terms, a plan for a plan,” said Erin Simon, head of plastic waste and business at the World Wildlife Fund. But, she warned, “There could be plenty of time for countries to back off what they committed to.” What can we expect to see in the treaty? A lot could happen over the next two years. Right now, similar to the Paris agreement, the deal allows for countries to take voluntary approaches—meaning it will likely not be mandatory for them to meet their commitments. It also contains an open mandate that allows the intergovernmental negotiating committee to change the treaty before it’s signed, potentially watering it down. While the open mandate could present a potential loophole, Jane Patton, the plastics and petrochemicals campaign manager for the Center for International Law, said it allows the committee to improve the draft’s language, making issues like plastic’s toxicity to human health more explicit. “It’s about setting up a framework that countries feel empowered to take action on,” Simon said. “They are likely to take action if they have the opportunity to inform the process.”What can possibly go wrong?Just like with the Paris climate agreement, if the U.S. doesn’t uphold its end of the bargain, the rest of the world could follow suit. The U.S. is the largest plastic waste producer in the world, shipping off its unwanted garbage to developing nations.Plastic policy can sometimes gain bipartisan support, however. Even well-known environmental curmudgeon Donald Trump signed the Save Our Seas 2.0 Act, designed to fight coastal plastic debris, into law in 2020. Fortunately, the fact that plastic pollution is so visible is speeding up efforts to address it. “It’s something a bit more tangible as a problem than climate, because you can’t see greenhouse gases in the air, but I can see plastic pollution in the streets outside my house,” Patton said. Are the worst culprits finally going to be held to account? We’ll see. Plastics are derived from fossil fuels and chemicals, and, unsurprisingly, oil and chemical industries have been less enthusiastic about the treaty.Their strategy focuses on recycling, which diverts the conversation away from reducing plastic production and usage. With a recycling approach, consumers who lack access to proper recycling resources are held responsible for their plastic waste, while plastic producers can continue business as usual. Plus, if the resolution’s terms aren’t mandatory for governments, companies might not face meaningful restrictions, either.Perhaps surprisingly, companies that have been ranked as the world’s top plastic polluters, including PepsiCo, Nestlé, and Coca-Cola, have joined with dozens of others in a pre-UNEA statement supporting the treaty, using snazzy buzzwords that called for “a holistic, coordinated international response,” a “circular economy for plastics,” and a “robust governance structure to ensure countries’ participation and compliance.” Although the global agreement doesn’t enforce plastics restrictions yet, some companies have already made sustainability pledges. Nestlé commits that 100 percent of packaging will be recyclable or reusable by 2025. It may sound like progress, but environmental experts are skeptical.“Recycling doesn’t get to the root of the problems with plastic production,” said Jim Walsh, policy director at Food and Water Watch. “When you focus simply on issues of recycling and packaging management, you ignore all of the impacts of the petrochemical development and pollution that comes along with that.”The companies’ support could be due in part to a growing anti-plastics movement over the past two years. A 2021 Ipsos poll of more than 20,000 people in 28 countries found that 88 percent of respondents believe a global plastics treaty is important and 85 percent want manufacturers and retailers to be held responsible for plastic packaging. Over 2 million people signed WWF’s petition for a global plastics agreement ahead of negotiations.What’s so bad about plastic?Plastic pollution is an environmental nightmare. Annually, reports estimate that between 9 to 11 million metric tons of plastic are tossed into oceans, the equivalent of dumping a garbage truck full of plastic every minute. Forty percent of plastic produced is single-use, and disturbingly, after over a hundred years of production, only 9 percent of plastics has ever been recycled.Plastic garbage doesn’t really decompose—rather, it breaks down into smaller and smaller pieces, eventually becoming microplastics the size of sesame seeds. These synthetic crumbs act like magnets for surrounding chemical pollutants, attracting floating environmental contaminants and depositing them to unsuspecting hosts.That’s a major problem for humans. Besides the health effects from eating the plastic itself, humans are getting exposed to a host of hormone disruptors, carcinogens, and pollutants in our food, water, salt, beer, and seafood dinners. These toxins lead to serious health issues, including cancer, birth defects, cardiovascular diseases, diabetes, auto-immune conditions, neuro-degenerative diseases, and stroke. Fifth UN Environment Assembly President Espen Barth Eide told the committee on Monday his blood tests showed plastic compounds and chemicals in his body.Plastics also fuel climate change. A 2021 report from environmental group Beyond Plastics found that plastic is currently slated to outpace coal’s greenhouse gas emissions in the U.S. by 2030.“The fact that that isn’t addressed right now in any of the global multilateral environmental agreements is a significant issue,” Patton said. What happens next? Signing the treaty was a major step for taking some plastic out of the equation. “I wanna say I have all the hope,” Simon said. “The fact that we have come to consensus on the draft resolution so far showcases a collective desire to solve the plastic pollution crisis together.”But nations, companies, NGOs, and consumers shoulder greater responsibility to make good on its promises over the next few years. Several of the member nations have already started to take action. In 2019, the European Union began limiting certain single-use plastics, restricting their sale when sustainable alternatives were easily available. Kenya, the UN host country, banned single-use plastics in protected natural areas in 2020. “This is a problem that the world cannot ignore,” Patton said. “It is a problem that has urgent implications for human health and the environment, and we have to move quickly on this issue.”

The UN is finally, maybe, doing something about plastic pollution

The UN has just signed a landmark agreement to reduce plastic pollution, in what some are calling the most important international environmental deal since the 2015 Paris agreement that targeted climate change.On Wednesday, marked by a gavel made from recycled plastics, representatives from 175 nations endorsed the agreement, which will act as the framework for discussions over the next two years. Worldwide, we produce 400 million tons of plastic a year, and that’s expected to double by 2040. If countries can stick to their commitments, it could lead to a massive reduction in single-use plastics, production levels, and ocean pollution.That’s a big “if”—while a lot of groups are cautiously optimistic, just like the Paris agreement, there are loopholes that countries could exploit. Here’s what you need to know about the agreement. What did the 175 countries actually agree to? “End plastic pollution: Towards an international legally binding instrument” is a series of loose resolutions promising to address the full life cycle of plastic products.It creates an intergovernmental negotiating committee, which will spend the next two years hashing out exactly how to tackle the plastic problem. Resolutions called for promoting sustainably designed products and materials, environmentally sound waste management, and financial support for developing countries.At the next UN Environment Assembly in 2024, the committee will finalize the agreement. “What we laid out was, in the easiest terms, a plan for a plan,” said Erin Simon, head of plastic waste and business at the World Wildlife Fund. But, she warned, “There could be plenty of time for countries to back off what they committed to.” What can we expect to see in the treaty? A lot could happen over the next two years. Right now, similar to the Paris agreement, the deal allows for countries to take voluntary approaches—meaning it will likely not be mandatory for them to meet their commitments. It also contains an open mandate that allows the intergovernmental negotiating committee to change the treaty before it’s signed, potentially watering it down. While the open mandate could present a potential loophole, Jane Patton, the plastics and petrochemicals campaign manager for the Center for International Law, said it allows the committee to improve the draft’s language, making issues like plastic’s toxicity to human health more explicit. “It’s about setting up a framework that countries feel empowered to take action on,” Simon said. “They are likely to take action if they have the opportunity to inform the process.”What can possibly go wrong?Just like with the Paris climate agreement, if the U.S. doesn’t uphold its end of the bargain, the rest of the world could follow suit. The U.S. is the largest plastic waste producer in the world, shipping off its unwanted garbage to developing nations.Plastic policy can sometimes gain bipartisan support, however. Even well-known environmental curmudgeon Donald Trump signed the Save Our Seas 2.0 Act, designed to fight coastal plastic debris, into law in 2020. Fortunately, the fact that plastic pollution is so visible is speeding up efforts to address it. “It’s something a bit more tangible as a problem than climate, because you can’t see greenhouse gases in the air, but I can see plastic pollution in the streets outside my house,” Patton said. Are the worst culprits finally going to be held to account? We’ll see. Plastics are derived from fossil fuels and chemicals, and, unsurprisingly, oil and chemical industries have been less enthusiastic about the treaty.Their strategy focuses on recycling, which diverts the conversation away from reducing plastic production and usage. With a recycling approach, consumers who lack access to proper recycling resources are held responsible for their plastic waste, while plastic producers can continue business as usual. Plus, if the resolution’s terms aren’t mandatory for governments, companies might not face meaningful restrictions, either.Perhaps surprisingly, companies that have been ranked as the world’s top plastic polluters, including PepsiCo, Nestlé, and Coca-Cola, have joined with dozens of others in a pre-UNEA statement supporting the treaty, using snazzy buzzwords that called for “a holistic, coordinated international response,” a “circular economy for plastics,” and a “robust governance structure to ensure countries’ participation and compliance.” Although the global agreement doesn’t enforce plastics restrictions yet, some companies have already made sustainability pledges. Nestlé commits that 100 percent of packaging will be recyclable or reusable by 2025. It may sound like progress, but environmental experts are skeptical.“Recycling doesn’t get to the root of the problems with plastic production,” said Jim Walsh, policy director at Food and Water Watch. “When you focus simply on issues of recycling and packaging management, you ignore all of the impacts of the petrochemical development and pollution that comes along with that.”The companies’ support could be due in part to a growing anti-plastics movement over the past two years. A 2021 Ipsos poll of more than 20,000 people in 28 countries found that 88 percent of respondents believe a global plastics treaty is important and 85 percent want manufacturers and retailers to be held responsible for plastic packaging. Over 2 million people signed WWF’s petition for a global plastics agreement ahead of negotiations.What’s so bad about plastic?Plastic pollution is an environmental nightmare. Annually, reports estimate that between 9 to 11 million metric tons of plastic are tossed into oceans, the equivalent of dumping a garbage truck full of plastic every minute. Forty percent of plastic produced is single-use, and disturbingly, after over a hundred years of production, only 9 percent of plastics has ever been recycled.Plastic garbage doesn’t really decompose—rather, it breaks down into smaller and smaller pieces, eventually becoming microplastics the size of sesame seeds. These synthetic crumbs act like magnets for surrounding chemical pollutants, attracting floating environmental contaminants and depositing them to unsuspecting hosts.That’s a major problem for humans. Besides the health effects from eating the plastic itself, humans are getting exposed to a host of hormone disruptors, carcinogens, and pollutants in our food, water, salt, beer, and seafood dinners. These toxins lead to serious health issues, including cancer, birth defects, cardiovascular diseases, diabetes, auto-immune conditions, neuro-degenerative diseases, and stroke. Fifth UN Environment Assembly President Espen Barth Eide told the committee on Monday his blood tests showed plastic compounds and chemicals in his body.Plastics also fuel climate change. A 2021 report from environmental group Beyond Plastics found that plastic is currently slated to outpace coal’s greenhouse gas emissions in the U.S. by 2030.“The fact that that isn’t addressed right now in any of the global multilateral environmental agreements is a significant issue,” Patton said. What happens next? Signing the treaty was a major step for taking some plastic out of the equation. “I wanna say I have all the hope,” Simon said. “The fact that we have come to consensus on the draft resolution so far showcases a collective desire to solve the plastic pollution crisis together.”But nations, companies, NGOs, and consumers shoulder greater responsibility to make good on its promises over the next few years. Several of the member nations have already started to take action. In 2019, the European Union began limiting certain single-use plastics, restricting their sale when sustainable alternatives were easily available. Kenya, the UN host country, banned single-use plastics in protected natural areas in 2020. “This is a problem that the world cannot ignore,” Patton said. “It is a problem that has urgent implications for human health and the environment, and we have to move quickly on this issue.”

A global plastics treaty is on the way

It’s Thursday, March 3, and world leaders have agreed to write a binding treaty on plastic pollution.

World leaders concluded the fifth United Nations Environment Assembly on Wednesday with a promise to the world: By 2024, delegates will broker a binding, international treaty addressing the full life cycle of plastics — including its production and design.
“We made history today,” Espen Barth Eide, Norway’s minister of climate and environment and president of the Assembly, told delegates.
The United Nations conference in Nairobi, Kenya, has been branded the most significant international environmental negotiation since 2015, when world leaders met to broker the Paris Agreement. For years, scientists, policymakers, and environmental advocates have urgently called for a comprehensive solution to the plastic pollution crisis, which — like climate change — is already exerting a hefty toll on people and the natural world.
Delegates at this week’s U.N. conference agreed to address the problem through a holistic “life cycle” approach, meaning the treaty they negotiate over the next two years could limit the amount of plastic the world is allowed to produce. There are some caveats: Although the treaty itself will be binding, the resolution contains language allowing for binding and non-binding elements, and nations may have a lot of discretion over how they adhere to the treaty’s terms.
Still, the treaty may prompt U.N. member states to adopt far-reaching measures to curb plastic pollution, potentially including national production caps or market-based mechanisms, like extended producer responsibility laws that force plastic manufacturers to pay for the pollution they create. This overall approach is in line with what scientists and environmental advocates have long stressed is the best way to curb pollution from plastics.
An intergovernmental negotiating committee still has to hammer out most of the treaty’s important details, but environmental advocates the world over applauded the U.N. resolution.
“It is a monumental and inspiring act,” Graham Forbes, plastics global project leader for Greenpeace, told me. “They’ve set out a powerful intention to tackle the pollution crisis — that’s what the world needs.”
Editor’s note: Greenpeace is an advertiser with Grist. Advertisers have no role in Grist’s editorial decisions.
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Together, toxics and climate change hinder fish growth

In biology, there is a rule of thumb that upholds food webs: the 10% rule, meaning animals are generally good at converting energy from their food into body weight at a rate of about 10%.

For example, a cow might eat 100 pounds of grass, but only grows by 10 pounds. This rule sustains life on Earth and determines the pyramidal structure of the food chain. However, new research shows that plastic pollution and warming oceans could threaten to upend this rule, possibly creating unwelcome consequences for marine species as well as the global food supply.

Researchers on the study, published in January in the Proceedings of the Royal Society, studied zebrafish in the lab and determined that warmer water and bisphenol-A (BPA) — a chemical used in many plastics — together make fish metabolisms less efficient at converting food into energy and body weight.

In the study, zebrafish exposed to these two stressors needed more energy to grow and reached a much smaller size at adulthood than their counterparts who had not been exposed.

The global food web “depends on a certain rate of energy from one level being transferred to the next. If you disrupt that, you can disrupt whole ecosystems,” Frank Seebacher, an author on the study and a professor of biology at the University of Sydney, told EHN.

BPA, one of the most abundantly used plastic additives in the world, affects fish — and human — endocrine systems by disrupting the ability of hormones to signal important body processes like growth and development. BPA contaminates fish via plastic pollution in the ocean and through plastic materials used in aquaculture (fish farming operations). While BPA is a prevalent endocrine-disrupting chemical, others are present in plastics, too, like phthalates and polyfluoroalkyl substances (PFAS). Such chemicals have been shown to affect fish growth on their own.

Research shows that fish hormones and endocrine systems are also impacted by temperature: in warmer water, fish metabolisms speed up, making the energetic cost of growth much higher. Both warming and endocrine-disrupting chemicals impact fish growth and development, making fish less efficient at converting their food into biomass. When fish are exposed to both at once, said the researchers, the problem is worse, and could lead to population-level impacts.

While the study was done on zebrafish within the lab, changes in fish size have already been observed in the wild, said Nicholas Wu, an author on the study and a PhD student at Western Sydney University in Australia.

“This is a growing problem,” he told EHN.

Population level impacts

Less efficient fish metabolisms spell trouble for marine ecosystems — especially those animals at the top levels of the food chain, the researchers said. Smaller fish at lower levels of the food chain mean that there’s less food to go around, which could cause a decrease in populations of animals like sharks, whales, or other large predators.

Additionally, said Seebacher, when prey fish are found at lower numbers — and therefore are spread further apart in the water — predators like sharks and whales must spend more time and energy searching for food. That can be stressful for the animals and threatens their populations as well.

Wu also said that fish are not the only marine organisms for which this is a problem; the metabolisms of some crustaceans, plankton, aquatic insects, and marine mammals have also been shown in other studies to be sensitive to endocrine-disrupting chemicals from plastic pollution. These chemicals disrupt processes critical to the survival of these organisms, like body size, development, and reproduction.

After determining that warming water and plastic pollution disrupted fish growth, researchers created maps to identify “problem areas,” or areas of the world with many fisheries, high levels of plastic pollution, and faster-than-average ocean warming.

They determined that, under the RCP 8.5 warming scenario (one commonly used climate model that assumes rising emissions continuing through the 21st century), many fisheries in southeast Asia, Central America, and equatorial Africa would be at high risk of changes in fish growth within the next hundred years.

The study comes as the latest Intergovernmental Panel on Climate Change report warns that marine heat waves are already becoming more common, longer, and more intense. The report further warns that climate change will threaten marine life through habitat loss, population decline, increased risks of extinctions, and the rearrangement of marine food webs.

Impacts on global food production

Fishing nets. Some areas of the world with extremely warm waters and high levels of pollution may need to stop fishing for human consumption altogether, said Seebacher. (Credit: Hanson Lu/Unsplash) This wouldn’t just impact marine fisheries: As a result of this growth effect, said the researchers, aquaculturists who grow fish for human food production may have to spend more money on feeding their fish for the same quantity of fish harvested. Predatory fish like tuna, salmon, and marlin all require other fish as food — if those other fish are smaller and less abundant, it becomes less efficient and more expensive to grow predatory fish for human consumption.“Successful aquaculture operations rely on food and energy transfer efficiency,” Seebacher said. “If that’s out, and it’s not commercially viable anymore, it produces more pollution because it’s just inefficient.” According to the Food and Agriculture Organization of the United Nations, fish provide, on average, 7% of the protein in a person’s diet; for 3.3 billion people, however, fish provide more than 20% of the protein they eat. Global demand for fish as food is expected to rise, making it even more critical for those managing fisheries to attend to warming and plastic pollution concerns.

Future for fish 

Seebacher said he hopes that the findings of this research will inform management strategies for fisheries, possibly leading to an adjustment in fish quotas to help combat the potential decline in fish abundance. Aquaculturists, he said, could benefit from replacing materials containing BPA that are used in their aquaculture ponds, such as plastic tubing, liners, or containers.The problem of marine plastic pollution is only getting worse: according to one 2020 study, 11% of all plastic waste produced enters aquatic ecosystems, and global waste management systems likely will not be able to keep up as the amount of plastic produced each year continues to rise. Some areas of the world with extremely warm waters and high levels of pollution may need to stop fishing for human consumption altogether, said Seebacher.“The results were really quite an eye opener,” he said. “This could have really important implications.”Banner photo: Sebastian Pena Lambarri/UnsplashFrom Your Site ArticlesRelated Articles Around the Web

The world’s nations agree to fix the plastic waste crisis

In front of the United Nations African headquarters in Nairobi, a 30-foot-high artwork featuring a faucet “spewing” a long stream of plastic waste dramatically illustrates the worsening flow of plastic fouling the world. Inside the main hall, 175 UN delegates took the first formal steps on Wednesday to turn off the tap. They agreed to negotiate the first comprehensive global treaty to curb plastic pollution—a move hailed as the most significant environmental agreement since the Paris climate accord in 2015.The framework of the agreement was hammered out last week ahead of the delegates’ vote. It creates a road map for treaty negotiations that are set to begin in May. Inger Andersen, who heads the UN Environment Program, told the delegates: “This is a historic moment.”This 30-foot monument themed “Turn off the plastics tap” by Canadian activist and artist, Benjamin von Wong, uses plastic waste retrieved from Nairobi’s largest slum, Kibera. It stands outside the UN African headquarters in Nairobi.Photograph by Tony Karumba, AFP/GettyPlease be respectful of copyright. Unauthorized use is prohibited.Plastic waste flowing into the oceans is forecast to triple by 2040, so the vote came not a moment too soon. Or did it? The effort to construct an international agreement to gain control of mounting plastic waste took almost five years just to get to the starting line. How can the UN, slow-moving by design, possibly come up with a solution in time to stave off an environmental disaster? Below is a guide to what’s involved, and why a binding global treaty may be the world’s best hope to contain a plastic waste crisis that knows no international boundaries.Q: How might a global treaty help solve the plastic waste crisis?A:  It would address the crux of the problem by requiring nations to commit to cleaning up their plastic waste. Because the treaty would be legally binding, it could pack more punch than the Paris accord, which requires nations to voluntarily commit to reducing greenhouse gas emissions. “This is like ‘Paris Plus,’” says Chris Dixon, the deputy ocean campaign lead at the U.K.-based Environmental Investigation Agency. “The devil is in the details, but this makes sure the ambition of the mandate is carried through. This is the beginning of the journey, not the end.”Q: Can this process be fast-tracked?  A:  Negotiators say they plan to reach an agreement within two years, astonishingly quick for the UN. The UN began exploring solutions to plastic waste in 2017. In 2019, the United States, which produces more plastic waste per capita than any other nation, was blamed for thwarting efforts to begin treaty talks, as the Trump administration opposed such a treaty. Last November, the U.S. reversed course and, along with France, announced support for a legally binding treaty. The approach is based on the treaty to end mercury pollution—known as the Minamata Convention which was finalized in just over three years. And it could take less time than the agreement to address climate change took.Q: What changed to allow this to move forward?A: Plastic waste has proliferated in recent years, and has been documented in every part of the world. As plastic production has increased—growing faster than production of any other material—the waste issue has taken on a greater urgency. That, in turn, has drawn wide support from all quarters for a global treaty. The American Chemistry Council, an industry trade group that opposed a legally binding treaty in 2019, now supports one. As two proposals were circulated—one by Peru and Rwanda, the other by Japan—support snowballed. By the time negotiators convened in Kenya’s capital city last month, those publicly backing a global treaty included more than 300 scientists, more than 140 nations, and nearly 100 leaders of multinational companies, including some of the largest plastics users: the Coca Cola Company, PepsiCo, and Unilever.Q: What’s on the table?A:  The framework’s language is only a guide for the actual treaty talks. Consequently, the language is basic in many places. For example, negotiators had to define what the plastic lifecycle entails. Should the treaty focus on when plastic becomes waste? Solutions in that case would revolve around expansion of reuse programs, recycling, and enhanced and better-funded waste management. Or is the plastic lifecycle more expansive, meaning the treaty would include every step along the way—from production of virgin plastic to packaging design, product distribution, and disposal after use? The industry focused on waste management, but the negotiators opted to recommend the broader definition. Tackling the problem from multiple angles provides more opportunities to intervene along the way, and that could reduce the amount of packaging that becomes waste or eliminate it altogether.Q: Why do we need an international treaty? Aren’t many nations already addressing the problem?A: It’s a global problem, and we need a global solution to solve it. About eight million tons of plastic are estimated to spill into the seas every year, and is known to travel across oceans. One nation’s regulations do not prevent another nation’s waste from reaching its shores. Bag bans in one country don’t stop neighboring countries from smuggling in bags for a tidy profit. Plastic waste is also traded internationally; that involves international agreements. More importantly, there are no uniform global standards or policies that guide the industry. Definitions of biodegradable plastics vary, depending on the manufacturer. And virtually no one can sort out the varying rules on what plastics can go into the recycle bin. Meanwhile, multinational corporations selling in multiple nations can find themselves sorting through hundreds of regulations affecting such issues as product design or packaging thickness. These companies strongly support harmonizing definitions, reporting metrics, and methodologies that will simplify industry practices and improve management of waste.Q: How serious is the plastic waste problem?A:  Forty percent of all plastics manufactured today is for packaging, most of it disposed of within minutes of opening it. Globally, just 9 percent of plastics get recycled. Both waste and production are on the rise: Between 1950 and 2020, production of plastic, which is made from fossil fuels, increased from roughly two million tons annually to just over 500 million tons. Production is projected to further increase to one billion tons by 2050. Consensus is growing among scientists, activists, and elected officials that to truly curtail the growth of plastic waste, plastic production must be reduced. The industry disagrees.Q: Does the framework call for a cap or reduction in production of virgin plastic? A:  No, it does not. The framework also does not include a requirement that production numbers be reported along with other statistics. Collection of production data represents the first step before any regulations could be written—and it’s a step that industry would like to avoid. On this subject, the framework contains a single sentence, instructing negotiators to “specify national reporting as appropriate”—not a strong directive, but one that does leave the door open to sharper language during the treaty talks.The framework has drawn universal praise from the parties involved. The International Council of Chemical Associations said in a statement it was “pleased with the outcome and fully supports a legally binding agreement… .”Ellen MacArthur, founder of the nonprofit Ellen MacArthur Foundation, is a proponent of creating a “circular economy” to reduce waste of any kind through reuse and recycling. She called the mandated agreement key to dealing with “the root of causes of plastic pollution, not just the symptoms.”In Nairobi Wednesday, Anderson told the delegation at the UN that reaching agreement to proceed toward a treaty “would have been unthinkable just a few years ago. But today … you are taking a crucial step to turn the tide on plastic pollution.” He then recalled how his mother eavesdropped on a pair of American businessmen in a cafe in Denmark a few years before he was born. The men laid out colorful blocks made of a strange new material in front of them, and she heard them say: “This is plastic. This is the future.”“Look—in the space of one lifetime, we have created a massive problem…,” Anderson said. “Now we must make the wrong-headed way we manufacture and use plastic the past.”

Together, toxics and climate change hinder fish growth

In biology, there is a rule of thumb that upholds food webs: the 10% rule, meaning animals are generally good at converting energy from their food into body weight at a rate of about 10%.

For example, a cow might eat 100 pounds of grass, but only grows by 10 pounds. This rule sustains life on Earth and determines the pyramidal structure of the food chain. However, new research shows that plastic pollution and warming oceans could threaten to upend this rule, possibly creating unwelcome consequences for marine species as well as the global food supply.

Researchers on the study, published in January in the Proceedings of the Royal Society, studied zebrafish in the lab and determined that warmer water and bisphenol-A (BPA) — a chemical used in many plastics — together make fish metabolisms less efficient at converting food into energy and body weight.

In the study, zebrafish exposed to these two stressors needed more energy to grow and reached a much smaller size at adulthood than their counterparts who had not been exposed.

The global food web “depends on a certain rate of energy from one level being transferred to the next. If you disrupt that, you can disrupt whole ecosystems,” Frank Seebacher, an author on the study and a professor of biology at the University of Sydney, told EHN.

BPA, one of the most abundantly used plastic additives in the world, affects fish — and human — endocrine systems by disrupting the ability of hormones to signal important body processes like growth and development. BPA contaminates fish via plastic pollution in the ocean and through plastic materials used in aquaculture (fish farming operations). While BPA is a prevalent endocrine-disrupting chemical, others are present in plastics, too, like phthalates and polyfluoroalkyl substances (PFAS). Such chemicals have been shown to affect fish growth on their own.

Research shows that fish hormones and endocrine systems are also impacted by temperature: in warmer water, fish metabolisms speed up, making the energetic cost of growth much higher. Both warming and endocrine-disrupting chemicals impact fish growth and development, making fish less efficient at converting their food into biomass. When fish are exposed to both at once, said the researchers, the problem is worse, and could lead to population-level impacts.

While the study was done on zebrafish within the lab, changes in fish size have already been observed in the wild, said Nicholas Wu, an author on the study and a PhD student at Western Sydney University in Australia.

“This is a growing problem,” he told EHN.

Population level impacts

Less efficient fish metabolisms spell trouble for marine ecosystems — especially those animals at the top levels of the food chain, the researchers said. Smaller fish at lower levels of the food chain mean that there’s less food to go around, which could cause a decrease in populations of animals like sharks, whales, or other large predators.

Additionally, said Seebacher, when prey fish are found at lower numbers — and therefore are spread further apart in the water — predators like sharks and whales must spend more time and energy searching for food. That can be stressful for the animals and threatens their populations as well.

Wu also said that fish are not the only marine organisms for which this is a problem; the metabolisms of some crustaceans, plankton, aquatic insects, and marine mammals have also been shown in other studies to be sensitive to endocrine-disrupting chemicals from plastic pollution. These chemicals disrupt processes critical to the survival of these organisms, like body size, development, and reproduction.

After determining that warming water and plastic pollution disrupted fish growth, researchers created maps to identify “problem areas,” or areas of the world with many fisheries, high levels of plastic pollution, and faster-than-average ocean warming.

They determined that, under the RCP 8.5 warming scenario (one commonly used climate model that assumes rising emissions continuing through the 21st century), many fisheries in southeast Asia, Central America, and equatorial Africa would be at high risk of changes in fish growth within the next hundred years.

The study comes as the latest Intergovernmental Panel on Climate Change report warns that marine heat waves are already becoming more common, longer, and more intense. The report further warns that climate change will threaten marine life through habitat loss, population decline, increased risks of extinctions, and the rearrangement of marine food webs.

Impacts on global food production

Fishing nets. Some areas of the world with extremely warm waters and high levels of pollution may need to stop fishing for human consumption altogether, said Seebacher. (Credit: Hanson Lu/Unsplash) This wouldn’t just impact marine fisheries: As a result of this growth effect, said the researchers, aquaculturists who grow fish for human food production may have to spend more money on feeding their fish for the same quantity of fish harvested. Predatory fish like tuna, salmon, and marlin all require other fish as food — if those other fish are smaller and less abundant, it becomes less efficient and more expensive to grow predatory fish for human consumption.“Successful aquaculture operations rely on food and energy transfer efficiency,” Seebacher said. “If that’s out, and it’s not commercially viable anymore, it produces more pollution because it’s just inefficient.” According to the Food and Agriculture Organization of the United Nations, fish provide, on average, 7% of the protein in a person’s diet; for 3.3 billion people, however, fish provide more than 20% of the protein they eat. Global demand for fish as food is expected to rise, making it even more critical for those managing fisheries to attend to warming and plastic pollution concerns.

Future for fish 

Seebacher said he hopes that the findings of this research will inform management strategies for fisheries, possibly leading to an adjustment in fish quotas to help combat the potential decline in fish abundance. Aquaculturists, he said, could benefit from replacing materials containing BPA that are used in their aquaculture ponds, such as plastic tubing, liners, or containers.The problem of marine plastic pollution is only getting worse: according to one 2020 study, 11% of all plastic waste produced enters aquatic ecosystems, and global waste management systems likely will not be able to keep up as the amount of plastic produced each year continues to rise. Some areas of the world with extremely warm waters and high levels of pollution may need to stop fishing for human consumption altogether, said Seebacher.“The results were really quite an eye opener,” he said. “This could have really important implications.”Banner photo: Sebastian Pena Lambarri/UnsplashFrom Your Site ArticlesRelated Articles Around the Web

How a new treaty could clean up plastic waste

The new pact would be legally binding and could go beyond cleaning up plastic waste to curbs on future production.With the bang of a gavel made of recycled plastic and a standing ovation, representatives of 175 nations agreed on Wednesday to begin writing a global treaty that would restrict the explosive growth of plastic pollution.The agreement commits nations to work on a broad and legally binding treaty that would not only aim to improve recycling and clean up the world’s plastic waste, but would encompass curbs on plastics production itself. That could put measures like a ban on single-use plastics, a major driver of waste, on the table.Supporters have said that a global plastics treaty would be the most important environmental accord since the 2015 Paris Agreement on climate change, in which nations agreed to cut greenhouse gas emissions. Negotiators are now set to meet this year for the first of many rounds of talks to hammer out the details of treaty on plastics, with a target of sealing a deal by 2024.“We are making history today,” said Espen Barth Eide, Norway’s climate and the environment minister and president of the United Nations Environment Assembly, which took place for the past week in Nairobi, Kenya. In an earlier interview, he said that, given Russia’s war in Ukraine, it was particularly significant that “this divided world can still agree on something, based on science.”The sheer volume of plastics the world produces is difficult to comprehend.By one measure, the total amount ever produced is now greater than the weight of all land and marine animals combined. Only 9 percent has ever been recycled, the United Nations Environment Program estimates. Instead, the bulk is designed to be used just once (recycling symbols are no guarantee of recyclability) after which it ends up in landfills, dumps, the natural environment, or is incinerated.Scientists say plastics cause harm throughout their life cycle, releasing toxic as well as planet-warming greenhouse gases during production, landfill and incineration. Plastics, which are manufactured from fossil fuels, caused 4.5 percent of global greenhouse gas emissions in 2015, one recent study estimated, more than all of the world’s airplanes combined.Wednesday’s agreement drew heavily from a joint proposal submitted by Peru and Rwanda, reflecting how, in recent years, developing nations have been at the forefront of efforts to tackle plastics pollution. Rwanda, for example, more than a decade ago adopted strict bans on the import, production, use or sale of plastic bags and packaging.“Plastic pollution is a planetary crisis, a threat that affects all of us,” Jeanne d’Arc Mujawamariya, the Rwandan environment minister, said at the meeting. “The real work now begins.”Espen Barth Eide, the Norwegian environment minister, at lectern on left, addressed delegates in Nairobi on Monday.Daniel Irungu/EPA, via ShutterstockIn much of the world, the task of collecting, sorting and recycling plastics often falls to informal waste pickers who work among fires and toxic vapors for little pay. In a landmark move, the agreement in Nairobi for the first time formally recognized the importance of waste pickers in the plastics economy.“We waste pickers have to be involved in this process,” said Silvio Ruiz Grisales of Bogotá, Colombia, who began working at dump sites at the age of 12. Now he is a leader in the Latin American and Caribbean Network of Waste Pickers, a group that advocates for better pay, working conditions and recognition.“We work the trash 12, 14 or 16 hours a day,” he said. “It’s a poverty trap.”Among other requisites, Wednesday’s agreement specifies that any global treaty must be legally binding, and that it must address the full life cycle of plastics, from production to disposal, recycling and reuse. Delegates said they hoped to model the treaty on the Paris climate accord, under which countries set binding targets but are able to meet those goals using a range of different policies.The treaty must also address packaging design to cut down on plastic use, improve recycling and make technical and financial assistance available to developing nations. According to Wednesday’s agreement, it must also address microplastics, the tiny plastic debris created by the breakdown of plastics over time. Microplastics have been detected by scientists in deep ocean waters, shellfish, drinking water and even falling rain.In the course of negotiations, some of those points faced objections from countries including the United States, Japan and India, according to three people close to the talks who were not authorized to speak publicly about negotiation details.Japan had initially submitted a competing resolution focused on marine plastics. India threatened to derail negotiations on the final day, urging that any action needed to be on a “voluntary basis,” according to a list of demands privately submitted by India’s delegation and reviewed by The New York Times.A demonstration at a dump in Nairobi on Tuesday. “We waste pickers have to be involved in this process,” said Silvio Ruiz Grisales, center left with microphone.Daniel Irungu/EPA, via ShutterstockA reference to concern over chemicals in plastic was taken out of the agreement after objections from delegations including the United States, the three people said. But in a victory for supporters of stronger policies against plastics, Wednesday’s agreement mentions the importance of considering plastic pollution’s risk to human health and the environment.Understand the Latest News on Climate ChangeCard 1 of 4A global plastics treaty.

Coors Light to scrap single-use plastic rings

Coors Light announced Tuesday it is moving away from single-use plastic rings on its six packs to a more sustainable packaging option.  Molson Coors is making an $85 million investment to update its packaging machinery to produce “fully recyclable and sustainably sourced cardboard-wrap carriers” and will begin the transition later this year.  “Our business, and Coors in particular, has a long history of using packaging innovation to protect our environment, and today we are building on that rich legacy,” Molson Coors CEO Gavin Hattersley, said in a news release.  The company’s entire suite of brands in North America will make the switch by the end of 2025. “We believe that buying beer shouldn’t mean buying plastic,” Marcelo Pascoa, Vice President of Marketing for the Coors Family of Brands, said in a news release.  “That’s why we’re taking a step toward making packaging even more sustainable, and with this achievement Coors Light will save 400,000 pounds of single-use plastic from becoming waste every year.” Molson Coors, which says it’s the largest beer brand in North America to make the move, estimates the eco-friendly shift across its brands will save 1.7 million tons of plastic pollution annually.  America is changing faster than ever! Add Changing America to your Facebook or Twitter feed to stay on top of the news.The International Union for Conservation estimates at least 14 million tons of plastic ends up in oceans each year, accounting for 80 percent of all marine debris. A report released by the World Economic Forum in 2016 predicted that without changes, there will be more single use plastics by weight than fish in the oceans by 2050. READ MORE STORIES FROM CHANGING AMERICA FLORIDA HOUSE PASSES ‘DON’T SAY GAY’ BILL LIA THOMAS SWEEPS IVY LEAGUE CHAMPIONSHIPS, ADVANCES TO NCAA FINALS AMENDMENT IN FLORIDA BILL TO ‘OUT’ STUDENTS IS WITHDRAWN EDUCATION DEPARTMENT TO ERASE $415 MILLION IN STUDENT LOAN DEBT FOR NEARLY 16,000 BORROWERS JUST 20 MINUTES OF DAILY EXERCISE AT 70 COULD STAVE OFF MAJOR HEART DISEASE: STUDY