Researchers unexpectedly discovered toxic airborne pollutants in Oklahoma. The image above depicts a field in Oklahoma. Credit: Shutterstock University of Colorado Boulder researchers made the first-ever airborne detection of Medium Chain Chlorinated Paraffins (MCCPs) in the Western Hemisphere. Sometimes, scientific research feels a lot like solving a mystery. Scientists head into the field with a clear goal and a solid hypothesis, but then the data reveals something surprising. That’s when the real detective work begins. This is exactly what happened to a team from the University of Colorado Boulder during a recent field study in rural Oklahoma. They were using a state-of-the-art instrument to track how tiny particles form and grow in the air. But instead of just collecting expected data, they uncovered something completely new: the first-ever airborne detection of Medium Chain Chlorinated Paraffins (MCCPs), a kind of toxic organic pollutant, in the Western Hemisphere. The teams findings were published in ACS Environmental Au. “It’s very exciting as a scientist to find something unexpected like this that we weren’t looking for,” said Daniel Katz, CU Boulder chemistry PhD student and lead author of the study. “We’re starting to learn more about this toxic, organic pollutant that we know is out there, and which we need to understand better.” MCCPs are currently under consideration for regulation by the Stockholm Convention, a global treaty to protect human health from long-standing and widespread chemicals. While the toxic pollutants have been measured in Antarctica and Asia, researchers haven’t been sure how to document them in the Western Hemisphere’s atmosphere until now. From Wastewater to Farmlands MCCPs are used in fluids for metal working and in the construction of PVC and textiles. They are often found in wastewater and as a result, can end up in biosolid fertilizer, also called sewage sludge, which is created when liquid is removed from wastewater in a treatment plant. In Oklahoma, researchers suspect the MCCPs they identified came from biosolid fertilizer in the fields near where they set up their instrument. “When sewage sludges are spread across the fields, those toxic compounds could be released into the air,” Katz said. “We can’t show directly that that’s happening, but we think it’s a reasonable way that they could be winding up in the air. Sewage sludge fertilizers have been shown to release similar compounds.” MCCPs little cousins, Short Chain Chlorinated Paraffins (SCCPs), are currently regulated by the Stockholm Convention, and since 2009, by the EPA here in the United States. Regulation came after studies found the toxic pollutants, which travel far and last a long time in the atmosphere, were harmful to human health. But researchers hypothesize that the regulation of SCCPs may have increased MCCPs in the environment. “We always have these unintended consequences of regulation, where you regulate something, and then there’s still a need for the products that those were in,” said Ellie Browne, CU Boulder chemistry professor, CIRES Fellow, and co-author of the study. “So they get replaced by something.” Measurement of aerosols led to a new and surprising discovery Using a nitrate chemical ionization mass spectrometer, which allows scientists to identify chemical compounds in the air, the team measured air at the agricultural site 24 hours a day for one month. As Katz cataloged the data, he documented the different isotopic patterns in the compounds. The compounds measured by the team had distinct patterns, and he noticed new patterns that he immediately identified as different from the known chemical compounds. With some additional research, he identified them as chlorinated paraffins found in MCCPs. Katz says the makeup of MCCPs are similar to PFAS, long-lasting toxic chemicals that break down slowly over time. Known as “forever chemicals,” their presence in soils recently led the Oklahoma Senate to ban biosolid fertilizer. Now that researchers know how to measure MCCPs, the next step might be to measure the pollutants at different times throughout the year to understand how levels change each season. Many unknowns surrounding MCCPs remain, and there’s much more to learn about their environmental impacts. “We identified them, but we still don’t know exactly what they do when they are in the atmosphere, and they need to be investigated further,” Katz said. “I think it’s important that we continue to have governmental agencies that are capable of evaluating the science and regulating these chemicals as necessary for public health and safety.” Reference: “Real-Time Measurements of Gas-Phase Medium-Chain Chlorinated Paraffins Reveal Daily Changes in Gas-Particle Partitioning Controlled by Ambient Temperature” by Daniel John Katz, Bri Dobson, Mitchell Alton, Harald Stark, Douglas R. Worsnop, Manjula R. Canagaratna and Eleanor C. Browne, 5 June 2025, ACS Environmental Au. DOI: 10.1021/acsenvironau.5c00038 Never miss a breakthrough: Join the SciTechDaily newsletter.

The epidermis (skin) is the body’s largest organ, so it would make sense that toxins found in fabrics that sit on the skin’s surface could be absorbed by the skin and make their way into the bloodstream. And polyester has been considered a particularly suspect fabric because it’s made from a chemical called polyethylene terephthalate, a plastic polymer used in various products.One study published in 1993 followed 24 dogs who were divided into two equal groups, one group wore cotton underpants and the other polyester. At the end of the study period, there was a significant decrease in sperm count and an increase in sperm abnormalities in the dogs who wore the polyester pants. But that said, this study is three decades old, done on dogs, and has had little additional research to show for it since.So, the jury is certainly still out as to whether fabrics decrease fertility, but there are some things that we do know. Chemicals Found in PolyesterAccording to Audrey Gaskins, an associate professor of environmental health at Emory University, most studies are focused on specific chemicals that might be found in fabrics rather than the fabrics themselves, and those chemicals are usually measured in blood or urine. But fabrics like polyester can contain a number of chemicals that might impact fertility. PFAS, short for per- and polyfluoroalkyl substances, are a group of chemicals found in thousands of products, and they’re difficult for the body to eliminate.“PFAS are commonly found in water-resistant clothing,” says Gaskins. However, drinking water is likely the most common avenue of exposure, as well as non-stick cookware, and many others.Research has shown that PFAS can reduce fertility in women by some 40 percent. According to NIH’s National Institute for Environmental Health Sciences, high levels of PFAS found in the blood were linked to a reduced chance of pregnancy and live birth. Other research has shown that PFAS are linked to increased instances of endometriosis and polycystic ovary syndrome (PCOS), both of which reduce fertility.Poor Pregnancy OutcomesPolyester (when combined with spandex) may also contain bisphenol A (BPA), another chemical compound that has been shown to potentially impact fertility. A December 2022 study published in the Journal of Clinical Medicine found a higher prevalence of PCOS in women with high amounts of BPA in their blood.Finally, polyester can contain phthalates, a chemical commonly used in things like sports bras and other pieces of clothing. These, too, have been shown to have a negative impact on fertility. A study published in the September 2021 issue of the journal Best Practice & Research Clinical Endocrinology & Metabolism found that higher concentrations of the chemical have been associated with decreased rates of pregnancy, increased incidences of miscarriage, and other pregnancy complications.“We’ve found suggestive associations between higher concentrations of bisphenol and phthalate metabolites and worse markers of reproductive health like poor success with IVF,” says Gaskins. “What we don’t know is where the source of exposure is coming from.”Exposure to Fertility-Decreasing ChemicalsStill, the obvious implication if you’re trying to get pregnant is to try to decrease your exposure to any of these chemicals through any route possible, especially when you have control over exposure. If we know there are chemicals in these fabrics, decreasing use of them would be more achievable for many people compared to, say, changing your drinking water, says Gaskins.There’s definitely no downside to decreasing your exposure to these chemicals, and while clothing is likely not the largest means of exposure to things like PFAs, phthalates, and BPA, if you’re trying to get pregnant, they’re certainly a good place to start.This article is not offering medical advice and should be used for informational purposes only.Article SourcesOur writers at Discovermagazine.com use peer-reviewed studies and high-quality sources for our articles, and our editors review for scientific accuracy and editorial standards. Review the sources used below for this article:National Institute of Environmental Health Sciences. PFAS Exposure Linked to Reduced Fertility in Women Center for Environmental Health. What You Need to Know About BPA in ClothingJournal of Clinical Medicine. Bisphenol-A and Female Fertility: An Update of Existing Epidemiological StudiesBest Practice & Research Clinical Endocrinology & Metabolism. Phthalates, ovarian function and fertility in adulthoodSara Novak is a science journalist based in South Carolina. In addition to writing for Discover, her work appears in Scientific American, Popular Science, New Scientist, Sierra Magazine, Astronomy Magazine, and many more. She graduated with a bachelor’s degree in Journalism from the Grady School of Journalism at the University of Georgia. She's also a candidate for a master’s degree in science writing from Johns Hopkins University (expected graduation 2023).

Brooklinen is one of our favorite brands for quality bedding designed to last. Making it in our lists for pillows, duvets, and even robes, the best Brooklinen sheets are also staples in many of our editors’ bedrooms for this very reason. Founded in 2014 by a pair of millennials with a passion for high-end textiles on a tight budget , this retailer made a splash on the market by offering direct-to-consumer bedding that merged thoughtfully designed linens at affordable price points—complete with 200-plus thread counts for ultimate durability and Oeko-Tex-certified backing to ensure the fabrics are free of harsh chemicals. While they also became well-known for the ubiquity of their subway ads, they caught our eye at AD Shopping for delivering breathability and sturdy sheets in modern colorways that made a bedroom feel anything but stuffy.That being said: the brand’s catalog is big, so if you know you want Brooklinen sheets but don’t know where to start, we’ve assembled a list of our tried-and-true favorites. Available in sizes ranging from twin XL to California king, we note our go-to percale, sateen, and linen sets in this lineup.Brooklinen Luxe Sateen Core Sheet SetBrooklinen’s Luxe Core Sheet Set is beloved by multiple AD staffers—commerce director Rachel Fletcher says this sateen set is “super classic, smooth, and has a crisp feel,” and contributor Erika Owen loves “the deep design of the fitted sheet pocket” and how easy it is to get it over her mattress and mattress topper. Owen also says it has great temperature regulation. As a self-proclaimed hot sleeper, she says the fabric maintains an even sleep temperature, including during a New York City heat wave. This set of sheets also comes in 21 colorways to bring your inspo pics to life, but move fast, these sell out quickly. Machine wash these on cold, tumble dry low, and you’ll see no signs of fading or wear, but an increase in softness, according to Fletcher.Brooklinen Washed Linen Core Sheet SetAs for Brooklinen’s linen sheets, their original core set recently got an upgrade. Our team members have tested their first iteration for years, including contributor Madeleine Luckel. While she confessed in our best sheets roundup that they felt a “bit thin,” she said the bedding lived up to her expectations. Plus, she would recommend them to other shoppers, so long as you weren’t “picturing a superdense weave.” After debuting the washed European linen sheets this spring, our team got our hands on them and found them to be soft and lightweight. Ranking in our best-of-linen sheets story, the washed material European linen brings a softer but stronger fabric to the beloved set, meaning it wears less with wash and continues to get softer with routine care Perhaps the best part of this sheet set—aesthetically, anyway—is its many colorways: the recent collaboration with Brooklyn-based textile artist Caroline Z Hurley offers warm, neutral stripe options, a white-and-blue stripe lends itself to a nautical-inspired coastal bedding set, and chambray and moss give the linen a particularly welcoming wash, appearing earthy and grounded for year-round use. Contributor Yelena Moroz Alpert says, “There is natural texture because of slubs (teeny bumps) in the weave, but I think this adds to the softness.” “Think of your favorite linen shirt, but in the form of a sheet.” They’re extremely light, “If you hold it up, you can see through it,” Alpert adds. Our editors recommend machine washing these on cold without any other items on the first cycle to help prevent color bleeding. These should get softer and look a bit more worn with each wash, which gives linen its coveted slouchy, worn look.Brooklinen Classic Percale Core Sheet Set“The texture of these is unreal,” says contributor Yelena Alpert, who recently tested this. “It feels buttery soft like a sateen, but still crisp as percale cotton should be.” Brooklinen promises these classic percale sheets feel like sleeping in your worn-in button-down shirt—sans buttons, of course. And after thorough testing, we agree. Besides the silky-soft feel, Alpert loves these sheets for lingering at an accessible price point for high-quality cooling sheets. While this set includes a flat sheet, fitted sheet, and two pillowcases, the hard-core sheet bundle includes a duvet cover and two more pillowcases to completely flesh out your new bedding set. Percale only improves with wash, as a few turns in the washing machine help loosen its fibers to create a softer texture. Alpert adds that this percale is also durable and pilling-resistant, though you can expect a bit more of a wrinkle if you’re not on top of the dry cycle.Like the linen sheets noted above, the percale sets are available in designs by Caroline Z Hurley. Commerce writer Julia Harrison attests these are not only cooling, comfortable, and soft, but they are also “so damn cute.” In a gray-beige, blue, and coral floral print, they bring a welcome dose of whimsy to your bedding without becoming twee about it.Between their designs and fabrics, and with a focus on temperature regulation and non-toxic materials, Brooklinen hits the sweet spot for budget-friendly, sturdy sheets that’ll last for the long haul. Few AD staffers haven’t tried a pair of sheets from them and loved their new drops, colorways, and ever-improving textures. Brooklinen offers free shipping with no minimum, as well as a 365-day warranty in case you’d like to return the items. However, we stand behind them for some of the best sheets out there. “It’s sort of a no-brainer,” Harrison says. “They’re the first brand I recommend when people ask me where to start for bedding, because they’re luxurious, affordable, and come in every pattern and colorway a person could want.”

Nearly two decades ago, scientists made an alarming discovery in upstate New York: Bats, the world’s only flying mammal, were becoming infected with a new, deadly fungal disease that, in some cases, could wipe out an entire colony in a matter of months. Since then, the disease — later called white-nose syndrome — has spread across much of the country, utterly decimating North American bats that hibernate in caves and killing over 90 percent of three bat species. According to some scientists, WNS has caused “the most precipitous wildlife decline in the past century in North America.” These declines have clear consequences for human populations — for you, even if you don’t like bats or visit caves. Bats eat insect pests, such as moths and beetles. And as they decline, farmers need to spray more pesticides. Scientists have linked the loss of bats in the US to an increase in insecticide use on farmland and, remarkably, to a rise in infant deaths. Insecticide chemicals are known to harm the health of newborns. The only reason we know any of this is because of a somewhat obscure government program in the US Geological Survey (USGS), an agency nested within the Interior Department. That program, known as the Ecosystems Mission Area (EMA), is the biological research division of Interior. Among other functions, it monitors environmental contaminants, the spread of invasive species, and the health of the nation’s wildlife, including bees, birds, and bats.White-nose syndrome, a fungal disease, has caused massive declines in a handful of bat species, including the tricolored bat, shown here in flight. J. Scott Altenbach/Bat Conservation InternationalThe Ecosystems Mission Area, which has around 1,200 employees, produces the premier science revealing how animals and ecosystems that Americans rely on are changing and what we can do to keep them intact — or risk our own health and economy. This program is now at an imminent risk of disappearing.Send us a confidential tipAre you a current or former federal employee with knowledge about the Trump administration’s attacks on wildlife protections? Reach out to Vox environmental correspondent Benji Jones on Signal at benji.90 or at benji.jones@vox.com or at benjijones@protonmail.com.In the White House’s 2026 budget request, the Trump administration asked Congress to slash funding for EMA by about 90 percent, from $293 million in 2025 to $29 million next year. Such cuts are also in line with Project 2025, the Heritage Foundation’s conservative policy roadmap, which calls for the government to “abolish” Interior’s Biological Resources Division, an outdated name for the Ecosystems Mission Area.Meanwhile, the Trump administration is also reportedly trying to fire government employees in the Ecosystems Mission Area, though a federal judge has so far blocked those efforts. Eliminating biological research is not good. In fact, it’s very bad.For a decade now, EMA’s North American Bat Monitoring Program, or NABat, has been gathering and analyzing data on bats and the threats they face. NABat produces research using data from hundreds of partner organizations showing not only how white-nose syndrome is spreading — which scientists are using to develop and deploy vaccines — but also how bats are affected by wind turbines, another known threat. Energy companies can and do use this research to develop safer technologies and avoid delays caused by wildlife regulations, such as the Endangered Species Act. The irony, an Interior Department employee told me, is that NABat makes wildlife management more efficient. It also helps reveal where declines are occurring before they become severe, potentially helping avoid the need to grant certain species federal protection — something the Trump administration would seem to want. The employee, who’s familiar with Interior’s bat-monitoring efforts, spoke on the condition of anonymity for fear of retaliation by the Trump administration. A northern long-eared bat with white-nose syndrome. Steve Taylor/University of IllinoisA dead bat infected with white-nose syndrome under UV light. USGS“If they want to create efficiencies in the government, they should ask us,” another Interior employee told Vox. “The damage that can be done by one administration takes decades to rebuild.”In response to a request for comment, an Interior Department spokesperson told Vox that “USGS remains committed to its congressional mandate as the science arm of the Department of the Interior.” The White House did not respond to a request for comment. In a Senate appropriations hearing last week, Interior Secretary Doug Burgum refused to commit to maintaining funding for EMA.“There’s no question that they don’t know what EMA does,” said a third Interior employee, who has knowledge of the Ecosystems Mission Area.Ultimately, it’s not clear why the administration has targeted Interior’s biological research. EMA does, however, do climate science, such as studying how plants and animals are responding to rising temperatures. That’s apparently a no-go for the Trump administration. It also gathers information that sometimes indicates that certain species need federal protections, which come with regulations (also a no-go for President Donald Trump’s agenda).What’s especially frustrating for environmental advocates is that NABat, now 10 years old, is starting to hit its stride.“We should be celebrating the 10-year anniversary of this very successful program that started from scratch and built this robust, vibrant community of people all collecting data,” said Winifred Frick, the chief scientist at Bat Conservation International, an environmental group. “We have 10 years of momentum, and so to cut it off now sort of wastes all that investment. That feels like a tremendous loss.” Meanwhile, the cost of maintaining the program is less than 1 percent of Interior’s overall budget.The government’s wildlife monitoring programs are “jewels of the country,” said Hollis Woodard, an associate professor of entomology at University of California Riverside who works with USGS on bee monitoring. “These birds and bats perform services for us that are important for our day-to-day lives. Literally everything I value, including food, comes down to keeping an eye on these populations. The idea that we’re just going to wipe them out is just terrifying.”Update, June 2, 12:58 pm ET: This article was originally published on May 29, 2025, and has been updated to include newly public details on the 2026 White House budget request.See More:

Key Takeaways Dell and Nvidia will together provide architecture for the next set of supercomputers, named Doudna, for the US Department of Energy. Dell will focus more on sustainable hardware and cooling systems, while Nvidia will provide its AI architecture, including the Vera Rubin AI chips. The US Department of Energy wants to focus more on the sustainable development of AI, hence the choice of environment-conscious companies. The US Department of Energy said that Dell’s next batch of supercomputers will be delivered with Nvidia’s ‘Vera Rubin’ AI chips, marking the beginning of a new era of AI dominance in research. The said systems are expected to be 10x faster than the current batch of supercomputers, which HP provided. The supercomputer will be named ‘Doudna,’ after Jennifer Doudna, a Nobel Prize winner who made key contributions in CRISPR gene-editing. Supercomputers have been instrumental in key scientific discoveries in the last few decades and also played a big role in the design and maintenance of the U.S. nuclear weapons arsenal. And now, with the introduction of artificial intelligence, we’re heading towards a new decade of faster and more efficient scientific research. It (supercomputers) is the foundation of scientific discovery for our country. It is also a foundation for economic and technological leadership. And with that, national security – Nvidia CEO, Jensen Huang Dell Going All in on AI This isn’t the first time Dell and Nvidia have come together to develop newer AI solutions. Back in March 2024, Dell announced the Dell AI Factory with NVIDIA, an end-to-end enterprise AI solution designed for businesses.  This joint venture used Dell’s infrastructure, such as servers, storage, and networking, combined with NVIDIA’s AI architecture and technologies such as GPUs, DPUs, and AI software. Image Credit – Dell For instance, the Dell PowerEdge server uses NVIDIA’s full AI stack to provide enterprises with solutions required for a wide range of AI applications, including speech recognition, cybersecurity, recommendation systems, and language-based services. The demand for Dell’s AI servers has also increased, reaching $12.1B in the first quarter of 2025, with a total backlog of $14.4B, which suggests a strong future demand and order book. The company has set a bold profit forecast between $28.5B and $29.5B, as against the analysts’ prediction of $ 25.05 B. With Doudna, Dell is well-positioned to lead the next generation of supercomputers in AI research, invention, and discoveries. Focus on Energy Efficiency Seagate has warned about the unprecedented increase in demand for AI data storage in the coming few years, which is a significant challenge to the sustainability of AI data centers. Global data volume is expected to increase threefold by 2028.  Image Credit – DIGITIMES Asian The data storage industry currently produces only 1-2 zettabytes (1 zettabyte equals 1 trillion gigabytes) of storage annually, which is much lower than what would be required in the next 4-5 years. At the same time, Goldman Sachs predicts that power requirements will also go up by 165% by 2030 due to increasing demand for AI data centers. This calls for a more sustainable approach for the supercomputing industry as well.  Dell will use its proprietary technologies, such as Direct Liquid Cooling, the PowerCool eRDHx, and Smart Flow design in the Doudna, ensuring energy efficiency. Direct Liquid Cooling (DLC) increased computing density by supporting more cores per rack, which reduces cooling costs by as much as 45%. Dell’s PowerCool eRDHx is a self-contained airflow design that can capture 100% of the heat generated by IT systems. This reduces the dependency on expensive chillers, as eRDHx can work in usual temperatures of 32 and 36 degrees Celsius, leading to 60% savings in cooling energy costs. Lastly, the Dell Smart Flow design improves airflow within IT components and reduces the fan power by 52%. This leads to better performance with fewer cooling requirements. Besides this, Dell plans to incorporate Leak Sense Technology. If a coolant leak occurs, the system’s leak sensor will log an alert in the iDRAC system so that swift action can be taken. As per a report titled ‘Energy and AI’ by the IEA, the data center electricity demand will increase to 945 terawatt-hours (TWh) by 2030. For comparison, this is more than the total electricity consumption of Japan today. The US alone will consume more electricity in 2030 for processing data than for manufacturing all energy-intensive goods combined, including aluminum, steel, cement, and chemicals. Therefore, the need to develop sustainable AI data centers and supercomputers cannot be highlighted enough. Dell’s technology-focused, sustainable approach can be a pivotal point in how efficiently we use AI in the next decade. The US Department of Energy’s choice of Dell also seems to be a conscious move to shift towards companies that give importance to sustainability and can vouch for the long-term viability of research-intensive AI setups. Krishi is a seasoned tech journalist with over four years of experience writing about PC hardware, consumer technology, and artificial intelligence.  Clarity and accessibility are at the core of Krishi’s writing style. He believes technology writing should empower readers—not confuse them—and he’s committed to ensuring his content is always easy to understand without sacrificing accuracy or depth. Over the years, Krishi has contributed to some of the most reputable names in the industry, including Techopedia, TechRadar, and Tom’s Guide. A man of many talents, Krishi has also proven his mettle as a crypto writer, tackling complex topics with both ease and zeal. His work spans various formats—from in-depth explainers and news coverage to feature pieces and buying guides.  Behind the scenes, Krishi operates from a dual-monitor setup (including a 29-inch LG UltraWide) that’s always buzzing with news feeds, technical documentation, and research notes, as well as the occasional gaming sessions that keep him fresh.  Krishi thrives on staying current, always ready to dive into the latest announcements, industry shifts, and their far-reaching impacts.  When he's not deep into research on the latest PC hardware news, Krishi would love to chat with you about day trading and the financial markets—oh! And cricket, as well. View all articles by Krishi Chowdhary Our editorial process The Tech Report editorial policy is centered on providing helpful, accurate content that offers real value to our readers. We only work with experienced writers who have specific knowledge in the topics they cover, including latest developments in technology, online privacy, cryptocurrencies, software, and more. Our editorial policy ensures that each topic is researched and curated by our in-house editors. We maintain rigorous journalistic standards, and every article is 100% written by real authors.

Nature, Published online: 30 May 2025; doi:10.1038/d41586-025-01692-xIn warming coastal seas, a crucial ecosystem is being replaced by ‘turfs’ of red algae, which release chemicals that suppress kelp survival.