science

December 18, 2024

Beware the air you breathe – more evidence links microplastics to health problems

By Carey Gillam

People diagnosed with infertility and certain cancers may have to blame the very air they breathe, according to a new report that adds to evidence that tiny plastic particles in air pollution and other environmental sources could be causing these and other diseases and illnesses.

Researchers at the University of California San Francisco (UCSF) said they reviewed approximately 3,000 studies in determining that exposure to microplastics – plastic particles less than 5 millimeters – may be causing a host of health problems in people, including colon cancer; chronic pulmonary inflammation, which can increase the risk of lung cancer; and infertility issues in both men and women.

The paper was published Wednesday in the Environmental Science & Technology journal.

“We urge regulatory agencies and policy leaders to consider the growing evidence of health harms from microplastics, including colon and lung cancer,” study lead author Nicholas Chartres said in a statement. Chartres, formerly with the UCSF Program on Reproductive Health and the Environment, is now with the University of Sydney.

The study expands on a 2023 collaboration between the research team and other experts aimed at informing state lawmakers.

Microplastics are increasingly drawing concerns from public and environmental health scientists as evidence builds showing they’ve become essentially ubiquitous, found in air, water, food, and within human tissues. One recent study that has not been peer reviewed found particularly concerning accumulation of microplastics in brain samples. The microplastics in air pollution can come from many sources, including tires and degrading garbage that shed tiny pieces of plastic into the air.

Keith Schenider Yakima long line of cattle

December 17, 2024

Regulators battle Oregon and Washington farmers over limits to farm pollution

By Keith Schneider

SUNNYSIDE, Washington – Waters from the snowpack of the Cascade Mountains support orchards, vineyards and dairies here in the Yakima Valley of eastern Washington State, boosting a flourishing farm economy and helping to stock store grocery shelves nationwide.

But as the waters flow, so do a host of dangerous farm pollutants, contaminating drinking water wells in the valley and through the adjacent Lower Umatilla Basin across the state line in Oregon.

Regulators and citizen groups have been pressing crop and livestock producers for years to document and rein in the pollution, tightening restrictions on some of the nation’s largest dairies, and bringing litigation against several seen out of compliance.

The actions put both Washington and Oregon among a growing number of US states leading a controversial national campaign to make agriculture more accountable for its mammoth wastes.

“There is a lot of new energy around this problem,” said Salini Sasidharan, assistant professor of groundwater management at Oregon State University. “A lot of investment is being made. There’s momentum here to make a real difference.”

But progress is slow and results are mixed. And farmers are fighting back, saying that they’re doing their best to balance environmental protection and business needs, and the crackdown on their business threatens not just their livelihoods, but also potentially the abundance of the country’s food supply.

December 4, 2024

Study indicates “persistent, damaging” effects of glyphosate herbicide exposure on brain health

By Carey Gillam

Exposure to a widely used weed killing chemical could be having “persistent, damaging effects” on brain health, according to a new study.

The study, published Wednesday in the Journal of Neuroinflammation, found that laboratory mice exposed to glyphosate herbicide developed significant brain inflammation, a condition associated with neurodegenerative diseases such as Alzheimer’s. The researchers, many who are associated with a neurodegenerative disease research center at Arizona State University (ASU), said the symptoms continued even long after exposure ended.

“This work is yet another step forward in understanding the impact of this widely used herbicide on the brain,” lead ASU researcher Ramon Velazquez said. “But more research is needed to determine the impact that glyphosate has on the brain since most Americans are exposed to this herbicide on a daily basis.” Velazquez noted that the work is particularly important given the increasing incidence of cognitive decline in the aging population, particularly in rural communities where glyphosate is used in farming.

Glyphosate is the most commonly used herbicide globally – made popular by Monsanto Co as the active ingredient in its Roundup brand, among others. It has been used so extensively by farmers, homeowners and industrial and municipal users for so long that it is considered ubiquitous – found in food, water and in human urine samples. A 2022 report by a unit of the Centers for Disease Control and Prevention (CDC) said more than 80% of urine samples drawn from children and adults in a US health study contained glyphosate.

Several authors of the new paper were also part of a team that published a prior, related study that examined the impact of glyphosate when it infiltrates the brain.

December 2, 2024

EPA takes partial step to ban chlorpyrifos in a move called “unconscionable”

By Carey Gillam

The long and winding regulatory road for a pesticide known to be harmful to developing babies took another turn on Monday as the US Environmental Protection Agency (EPA) said it was planning to only partially ban the insecticide chlorpyrifos in farming.

Under pressure from powerful agricultural industry interests and ordered by a federal court to consider the factors raised by the farming groups in a legal petition, the EPA said it would continue to allow chlorpyrifos to be used by farmers growing 11 crops, including apples, asparagus, citrus, peaches, strawberries, wheat, soybeans and others, despite evidence that the pesticide is associated with “neurodevelopmental effects” that can impair the normal development of children. Other uses in farming would be banned, the agency said.

In the most recent Food and Drug Administration (FDA) pesticide residue monitoring report, chlorpyrifos was the 11th most frequently found pesticide in human food samples out of 209 different pesticides detected by FDA testing.

“EPA continues to prioritize the health of children,” Michal Freedhoff, assistant administrator for the EPA’s Office of Chemical Safety and Pollution Prevention, said in a statement. “This proposed rule is a critical step forward as we work to reduce chlorpyrifos in or on food and to better protect people, including infants and children, from exposure to chemicals that are harmful to human health.”

Public and environmental health advocates saw it differently, saying chlorpyrifos should not be allowed at all, given scientific research showing it has neurotoxic and endocrine disrupting effects, particularly on the developing children of pregnant women.

December 2, 2024

Postcard from California: Two refineries to close but fenceline communities still besieged by pollution

By Bill Walker

Next year, people in Wilmington and Carson, Calif., neighboring communities in south Los Angeles County, will breathe a bit easier thanks to a decision by Phillips 66 to shut down its gasoline refineries in those communities by the end of 2025.

For more than 100 years, the twin refineries – five miles apart and connected by a pipeline – have emitted air pollutants that increase cancer risk, trigger asthma and other respiratory illnesses, form toxic smog, and lead to heart attacks and strokes. They emit millions of tons each year of climate-heating greenhouse gases, which also contribute to respiratory problems.

California is not usually thought of as an oil state, but it ranks third in the US in crude oil refining capacity. Hundreds of thousands of Californians are exposed daily to pollution from gasoline refineries. Most are people of color who live in lower-income industrial suburbs where refineries are clustered, but too often are kept in the dark about what happens inside the refinery gates.

As the state moves toward its legally mandated goal of virtually eliminating fossil fuel use in 20 years, and electric car sales continue to rise, more refineries are likely to close. Meanwhile, fenceline communities continue to pay the price for our dependence on gasoline.

Wilmington, with 53,000 residents, is part of Los Angeles. Carson, population 91,000, is its own city. About 90% of Wilmington residents are Latino, about 60% of Carson residents are Latino or Black, and both are state-designated disadvantaged communities.

November 20, 2024

A call for EPA action on climate risks to hazardous waste facilities

By Dana Drugmand

The US Environmental Protection Agency (EPA) should be doing more to help address potential climate change-related risks to hundreds of hazardous waste facilities across the country, according to a recent government watchdog report.

The Nov. 14 report, issued by the Government Accountability Office (GAO), examined the risks to hazardous waste treatment, storage, and disposal facilities (TSDFs) from flooding, storm surge, sea level rise, and wildfires, events expected to intensify and/or become more frequent with climate change.

More than 700 out of 1,091 federally regulated facilities, or about 68%, are located in areas vulnerable to these weather-related events, the report found. Roughly half of these facilities could be at risk of flooding and more than one-third are in areas vulnerable to wildfire, while almost 200, or 17%, , are in coastal areas at risk of inundation from storm surge.

Chemical waste drums, petroleum storage tanks, toxic landfills and other facilities that treat, store, or dispose of hazardous waste are regulated by EPA under the Resource Conservation and Recovery Act (RCRA) of 1976. While EPA sets national standards, states implement the regulations and provide enforcement. But, according to the GAO, states currently lack clear direction from EPA on how to assess or manage climate-related risks to hazardous waste facilities, particularly during inspections.

“People at EPA know about the risks, but there has not been real forward-leadership on this,” said Judith Enck, who served as a regional administrator for EPA during the Obama administration. “I can’t tell you how many times I would flag something and was told, ‘well we don’t have the resources and we really can’t do that until headquarters tells us to do something.’”

The EPA has started to take steps to address climate change risks at hazardous waste facilities. In June, for example, it issued guidance on how states can require management of these risks when facilities are permitted. But the GAO said the agency should take additional actions to clarify requirements for climate risk management and to improve and help states implement the guidance.

GAO made nine recommendations to the EPA, including offering training and technical assistance to states to help them understand and manage climate-related risks at hazardous waste facilities.

But as the agency prepares to transition to new leadership under the incoming Trump administration, there are questions around whether it will ultimately act upon the GAO recommendations, or if it will even have the resources to do so. The GAO report identified resource constraints as one of several challenges for addressing climate change risks to hazardous waste facilities.

November 13, 2024

What’s hampering federal environmental justice efforts in the hydrogen hub build-out?

By Kristina Marusic and Cami Ferrell

This is part 2 of a 2-part series originally published at Environmental Health News. Read part 1: Hydrogen hubs test new federal environmental justice rules

One Wednesday evening last May, Yukyan Lam stared into the camera on her computer, delivering carefully prepared remarks during a virtual listening session convened by the US Department of Energy (DOE).

The goal of the event was for the federal agency to hear concerns and questions from communities that could be impacted by the Mid-Atlantic hydrogen hub, one part of a massive federal program working to establish a national hydrogen energy network.

Lam, the director of research at The New School’s Tishman Environment & Design Center, had just three minutes to present research on a wide range of potential health impacts associated with carbon capture and storage and hydrogen energy deployment, including increased rates of respiratory issues, premature mortality, cardiovascular events, and negative birth outcomes. Later, after reading the DOE’s public summary of the event, she felt frustrated.

“I didn’t feel like they accurately summarized the research I shared, or that the DOE really heard or valued what was said in the listening session,” Lam said. “They’re moving these projects forward but they haven’t meaningfully engaged with communities yet.”

Lam, who had been providing research and technical assistance to the New Jersey Environmental Justice Alliance, a nonprofit following the development of the hub, wasn’t alone in her frustration.

The Mid-Atlantic hub is one of seven proposed, federally funded networks of infrastructure — an initiative borne from the Biden administration’s 2021 Bipartisan Infrastructure Law — that aim to use both renewable and fossil fuel energy to create hydrogen for energy use by heavy industries that are difficult to electrify like steelmaking, construction and petrochemical production. The hubs support the administration’s objective of reaching net-zero carbon emissions by 2050 and achieving a 100% clean electrical grid by 2035.

November 8, 2024

In Amish country, an unlikely partnership with beef giant JBS roils community

By Keith Schneider

EDON, OH – For 60 years, this one stoplight Ohio town has been known as a place where time appears to stand still. With more than 400 Amish residents settled in and around the rural community that straddles the Ohio, Indiana, and Michigan state lines, it has been common to see large families traveling by horse-drawn black buggies to and from farms where they milk dairy cows and grow corn.

Adhering to a strict religious doctrine that resists new technology, Amish farmers here spent decades largely eschewing industrial farming practices that have become common around the United States.

But that bucolic tableau of plain people earnestly cultivating the rich soil is eroding here, splintered by an industrial farm alliance between one of the area’s leading Amish farming families and JBS Foods, the world’s largest beef producer. Over the last two years, the partnership has established a mammoth vertically integrated concentrated cattle feeding operation that is confining more than 100,000 male calves and steers in large concrete, steel, and vinyl-covered feeding barns, and generating thousands of tons of solid manure each day.

The operations have prompted complaints of odor and contamination, and state investigators have found uncontained manure running off waste piles and out of barns, draining into streams and wetlands. Water samples collected by state inspectors contained high concentrations of nitrogen ammonia, a contaminant of manure. Following the inspections, regulators cited multiple farms for manure mismanagement, and issued modest penalties to some farms for failing to secure proper operating permits.

Nine Amish farms were cited for violations of manure management regulations in August alone. The state also ordered the largest mounds of manure, some towering two and three stories tall, to be removed. The cited farms are close to each other in Williams County, Ohio and are all owned by one extended Amish family.

Area residents say the manure contaminants, which are often spread on farm fields as fertilizer, are leaching into waterways, polluting streams, lakes, and the St. Joseph River. Water samples collected by two area environmental groups showed persistently high concentrations of nitrates, phosphorus, and dangerous E-coli bacteria in streams and lakes in the region. The animal waste is considered a source of the pollutants that cause an annual toxic algae bloom in Lake Erie.

Five years ago, Ohio launched a $172 million multi-year project aimed at bringing algal blooms under control by encouraging farmers to to limit contaminants coming from their farms. But with the new large feeding operations on multiple farms, the effort seems doomed, critics say.

November 4, 2024

Postcard from California: Climate change is fueling faster-spreading, more extreme wildfires

By Bill Walker

This summer, the Park Fire burned more than 425,000 acres near Chico, Calif. – the fourth-largest wildfire in the state’s history. It started when an arsonist pushed a flaming car into a grassy, brush-strewn gully, sparking California’s largest-ever deliberately set wildfire. But what set the Park Fire apart from the 7,194 wildfires that have burned more than 1 million acres in California this year was how fast it grew.

After first igniting on July 24, it spread an estimated 5,000 acres an hour – about one football field a second. In 24 hours it burned 150,000 acres, and in 72 hours incinerated an area larger than San Francisco. Fire experts said it was among the fastest-growing wildfires in history.

As it burned, Zeke Lunder, director of Deer Creek Resources, a wildfire management consulting firm in Chico, told The Washington Post that in 25 years of mapping large fires throughout the Western US, he couldn’t recall another blaze that spread so far so fast. He said the Park Fire “was moving in ways we aren’t used to seeing.”

It’s settled science that the climate crisis is increasing the number and frequency of wildfires. A 2016 study estimated that from 1984 to 2015, human-caused climate change contributed to the burning of almost twice the acreage in 11 Western states than might have burned in its absence.

Now, new research confirms that Western wildfires are also spreading faster.

In a study published Oct. 24 in the journal Science, a team of researchers analyzed images from NASA satellites to track the day-by-day spread of more than 60,000 fires in the continental US from 2001 to 2020.

They found that in that period, the average peak daily growth rate of wildfires in the West more than doubled. In California, wildfires spread almost four times as fast in 2020 as in 2001. They cited other research predicting that if global warming continues at its current pace, the frequency of the fastest-spreading fires in the West could double in 30 years.

“The modern era of megafires is often defined based on wildfire size, but it should be defined based on how fast fires grow,” the researchers wrote. “Speed fundamentally dictates the deadly and destructive impact of megafires… [F]ire speed matters more for infrastructure risk and evacuation planning.”

November 1, 2024

US Congress members call on EPA to ban paraquat, citing risk of Parkinson’s and other diseases

By Carey Gillam

More than 50 US lawmakers are calling on the Environmental Protection Agency (EPA) to join dozens of other nations in banning a widely used weed killer linked to Parkinson’s disease and other health dangers.

In an Oct 31 letter to the agency, seven US senators said that paraquat, a weed killer commonly applied on US farms, was a “highly toxic pesticide whose continued use cannot be justified given its harms to farmworkers and rural communities.” The call for a ban from the senators came after 47 members of the US House of Representatives sent a similar letter to the EPA calling for a ban earlier in October.

The lawmakers cite scientific links between paraquat use and development of Parkinson’s and other “life threatening diseases” as well as “grave impacts on the environment”. The lawmakers note that approximately 70 countries have banned paraquat.

“Numerous studies” have found that paraquat causes “serious health risks for workers who use the substance as well as the surrounding communities,” the lawmakers wrote. “These health risks include a higher risk of Parkinson’s disease, with some studies finding a 64% increase in the likelihood of developing Parkinson’s, non-Hodgkin’s Lymphoma, thyroid cancer, and other thyroid issues.”

Sen. Cory Booker, organizer of the Senate letter, said the risks of paraquat exposure are “well documented” and that it is “irresponsible” for the EPA to continue to allow its use. “I hope the EPA will follow the science and ban paraquat,” Booker said.

The congressional letters add to mounting pressure on the EPA to remove paraquat from the market.