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How the U.S. Military Plans to Tackle Its ‘Forever Chemical’ Problem

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Wednesday, September 25, 2024

The U.S. military has been protecting the home front for nearly 250 years—and doing a bang-up job of it. In recent decades, however, the military has also been polluting the home front, most notably with a toxic chemical never heard of in the era of muskets and drums: PFAS. That’s becoming a major problem—one that is now teeing up a major clash between environmental groups and the Environmental Protection Agency (EPA) on the one hand and the Department of Defense (DoD) on the other. [time-brightcove not-tgx=”true”] Short for per- and polyfluoroalkyl substances, PFAS is an umbrella term for more than 12,000 substances colloquially known as “forever chemicals,” because that’s pretty much how long they linger in the environment and the body. PFAS have been linked to increased risk of kidney, testicular, and other cancers; changes in metabolism; higher cholesterol; low birthweight; pregnancy-related hypertension; damage to the immune system, and more. Virtually no one is safe: according to the U.S. Centers for Disease Control and Prevention (CDC), 99% of Americans have detectable levels of PFAS in their blood.  The ubiquity of PFAS is due to the fact that the chemicals are used in thousands of commercial products, from non-stick cookware to menstrual products, toilet paper, and fire-fighting foam. When it comes to the military, it’s the foam that’s causing the biggest headache, since fuel fires, especially those related to aircraft, are common on bases and other installations.  Now we’re getting a clearer idea of how serious the military’s PFAS problem is. According to a Sept. 3 memo from Assistant Secretary of Defense Brendan M. Owens, about 80%—or 578 of 710—military bases across the country are known to have or suspected of having elevated levels of PFAS in their soil and water supplies. That comes as very bad news, because toxins that are on the military sites don’t stay on the military sites. Instead, they seep into the groundwater and private wells in the surrounding communities, raising the question of who is responsible for remedying the problem and how fast that work can be done. The DoD acknowledges its role in creating the PFAS mess and, nominally at least, insists that it is taking steps to clean it up both on military bases and in the affected communities off-base. “PFAS remains a complex national issue and a whole-of-government approach is underway to address it,” said Owens in an email to TIME. “Implementing solutions that reduce impacts of PFAS from past DoD activities is one of my key focus areas. DoD has moved out and implemented remedial actions at dozens of sites and we will continue our investigations and implement solutions at the other locations where past DoD activities require action.” But dozens of sites is a whole lot fewer than hundreds of sites and the statement is conspicuous for its lack of one thing: a deadline by which the work will be done. “They create the impression that there will be forward action, but if you look at it closely it’s very disappointing,” says John Reeder, vice president of federal affairs for the Environmental Working Group (EWG), a nonprofit organization that conducts research on a range of environmental issues, publishes consumer guides, advocates for green regulations and laws, and more. “It’s a continuation of trying to stretch the [rules] as far as they can,” he says, “so that they don’t have to spend more money in this cleanup program.” Big as the problem is, it’s small compared to the existence of PFAS nationwide. As such, the military’s PFAS challenges could serve as a sort of a test case for how industry, government, and the activist sector can work together to rid the nation at large of its greatest chemical scourge. Setting the rules This year has been an important one in the attempt to regulate and incrementally remove PFAS from the environment. In April, the EPA established what is known as a maximum contamination level (MCL) for the six most common types of PFAS, ranging from 4 parts per trillion (ppt) to 10 ppt. The rule further gave public water suppliers and other institutions like the military until 2027 to determine the level of PFAS contamination in their systems and until 2029 to initiate cleanup operations.  As the new Sept. 3 policy memo shows, however, the military is dragging its feet. In a move that the DoD dubbed “worst first,” it plans to initiate cleanup only at sites that reach or exceed three times the EPA’s established MCL—a standard that, at the moment, is met by just 55 sites, or 7% of all known contaminated military bases in the U.S.  In an email to TIME, a Department of Defense spokesperson was vague about when remediation would begin. “In general,” the spokesperson said, “the Department cannot estimate how long it will take or how much it will cost to address its PFAS releases until it knows the extent of those releases. The Department will be able to provide better estimates as the ongoing investigations are completed over the next few years.” Some environmentalists aren’t pleased. “This policy does seem to be part of a pattern we have seen with the DoD,” says Reeder. “Contamination doesn’t end at the base-line. Where the Department of Defense is found to be the source of PFAS contamination, they do have a certain responsibility to address the cleanup.” Footing the bill Money seems to be central to the Department of Defense’s dilatory approach to the PFAS problem. The military’s fiscal year 2024 budget is a whopping $841.4 billion. According to the DoD spokesperson, however, only $9.7 billion is allocated this year to continue testing all of the 710 bases on the military’s manifest and perform cleanups on the hundreds that don’t pass muster. That kind of stingy funding was never going to be adequate, and the price is only likely to rise.  “A huge driver has been discovering the scope and scale of PFAS contamination as they find out more and more about it,” says Jared Hayes, senior policy adviser for the EWG. “Unfortunately, their budget requests for their environmental remediation programs have been fairly slack.” Reeder estimates that the DoD needs at least twice the amount it’s currently spending if it’s going to keep up with the growing need for cleanup. To the DoD’s credit, all of its bases are switching to a type of firefighting foam that does not include PFAS, but, according to Hayes, that conversion is not yet complete. While foam that contains PFAS is no longer used in training exercises, it still may be turned to in emergencies. In the meantime, there is always the risk of accidental dispersal of the old, toxic variety. In August, for instance, Brunswick Naval Air Station in Maine saw a spill of more than 50,000 gallons of firefighting foam and PFAS-contaminated water. In July, a smaller but still considerable 7,000-gal. spill occurred at Cannon Air Force Base in New Mexico.  Taking it to the courts These accidents, along with the legacy contamination of decades of PFAS-contaminated foam and the military’s go-slow approach to cleanup is causing some states to turn to the courts to seek both remuneration and remediation. Over the past six years, 27 states, including New Mexico, New York, and Washington, have filed suit against the military to pay for groundwater and soil cleanup. Those cases have been consolidated in the U.S. District Court in South Carolina, and in February, the DoD moved to dismiss, citing a provision in tort law that shields the government from liability for the discretionary actions of government employees—which, the DoD says, includes the military personnel who would be handling the foam. The court has yet to rule on the motion. New Mexico has filed a similar suit over the spill at Cannon Air Force Base, as has New Hampshire, which is suing over decades of PFAS pollution seeping off of local Pease Air Force Base. If recent history is any indication, states and localities have reason to pile on more suits. In June, chemical giant and PFAS manufacturer 3M settled a lawsuit, also consolidated in South Carolina, in which it agreed to pay more than 300 plaintiff communities a total $10.3 billion to fund water cleanup operations. In the same month, a similar settlement was reached with DuPont and its spinoff companies, for $1.18 billion. Suing the government is a heavier lift than suing a private corporation, as the February motion by the DoD suggests, but that doesn’t mean it’s hopeless. What’s more, potential plaintiffs are increasingly motivated to act.  “There are communities that are really angry about this and rightfully so,” says Hayes. “Their wells have been poisoned for years without them knowing about it, and now this [memo says that] many of them are just going to have to wait longer and longer. They don’t have a clear timeline, they don’t know when they might get clean water, and they’re having to treat it themselves.” The DoD defends its current policy of doing the most it can with the limited resources it has available. “Our recently published PFAS clean-up prioritization policy reinforces our commitment to fulfilling our PFAS-related cleanup responsibilities,” said Owens, referring to the Sept. 3 memo. “This policy is DoD’s initial step to implement EPA’s new PFAS regulation and prioritizes action in locations where PFAS levels in drinking water are the highest.” In the meantime, hundreds of communities across the country will likely continue to live with PFAS contamination for untold years to come.

Toxic PFAS, known as 'forever chemicals,' are seeping from military sites into communities across the country.

Forever Chemicals-Military Bases

The U.S. military has been protecting the home front for nearly 250 years—and doing a bang-up job of it. In recent decades, however, the military has also been polluting the home front, most notably with a toxic chemical never heard of in the era of muskets and drums: PFAS. That’s becoming a major problem—one that is now teeing up a major clash between environmental groups and the Environmental Protection Agency (EPA) on the one hand and the Department of Defense (DoD) on the other.

[time-brightcove not-tgx=”true”]

Short for per- and polyfluoroalkyl substances, PFAS is an umbrella term for more than 12,000 substances colloquially known as “forever chemicals,” because that’s pretty much how long they linger in the environment and the body. PFAS have been linked to increased risk of kidney, testicular, and other cancers; changes in metabolism; higher cholesterol; low birthweight; pregnancy-related hypertension; damage to the immune system, and more. Virtually no one is safe: according to the U.S. Centers for Disease Control and Prevention (CDC), 99% of Americans have detectable levels of PFAS in their blood. 

The ubiquity of PFAS is due to the fact that the chemicals are used in thousands of commercial products, from non-stick cookware to menstrual products, toilet paper, and fire-fighting foam. When it comes to the military, it’s the foam that’s causing the biggest headache, since fuel fires, especially those related to aircraft, are common on bases and other installations. 

Now we’re getting a clearer idea of how serious the military’s PFAS problem is. According to a Sept. 3 memo from Assistant Secretary of Defense Brendan M. Owens, about 80%—or 578 of 710—military bases across the country are known to have or suspected of having elevated levels of PFAS in their soil and water supplies. That comes as very bad news, because toxins that are on the military sites don’t stay on the military sites. Instead, they seep into the groundwater and private wells in the surrounding communities, raising the question of who is responsible for remedying the problem and how fast that work can be done.

The DoD acknowledges its role in creating the PFAS mess and, nominally at least, insists that it is taking steps to clean it up both on military bases and in the affected communities off-base. “PFAS remains a complex national issue and a whole-of-government approach is underway to address it,” said Owens in an email to TIME. “Implementing solutions that reduce impacts of PFAS from past DoD activities is one of my key focus areas. DoD has moved out and implemented remedial actions at dozens of sites and we will continue our investigations and implement solutions at the other locations where past DoD activities require action.”

But dozens of sites is a whole lot fewer than hundreds of sites and the statement is conspicuous for its lack of one thing: a deadline by which the work will be done.

“They create the impression that there will be forward action, but if you look at it closely it’s very disappointing,” says John Reeder, vice president of federal affairs for the Environmental Working Group (EWG), a nonprofit organization that conducts research on a range of environmental issues, publishes consumer guides, advocates for green regulations and laws, and more. “It’s a continuation of trying to stretch the [rules] as far as they can,” he says, “so that they don’t have to spend more money in this cleanup program.”

Big as the problem is, it’s small compared to the existence of PFAS nationwide. As such, the military’s PFAS challenges could serve as a sort of a test case for how industry, government, and the activist sector can work together to rid the nation at large of its greatest chemical scourge.

Setting the rules

This year has been an important one in the attempt to regulate and incrementally remove PFAS from the environment. In April, the EPA established what is known as a maximum contamination level (MCL) for the six most common types of PFAS, ranging from 4 parts per trillion (ppt) to 10 ppt. The rule further gave public water suppliers and other institutions like the military until 2027 to determine the level of PFAS contamination in their systems and until 2029 to initiate cleanup operations. 

As the new Sept. 3 policy memo shows, however, the military is dragging its feet. In a move that the DoD dubbed “worst first,” it plans to initiate cleanup only at sites that reach or exceed three times the EPA’s established MCL—a standard that, at the moment, is met by just 55 sites, or 7% of all known contaminated military bases in the U.S. 

In an email to TIME, a Department of Defense spokesperson was vague about when remediation would begin. “In general,” the spokesperson said, “the Department cannot estimate how long it will take or how much it will cost to address its PFAS releases until it knows the extent of those releases. The Department will be able to provide better estimates as the ongoing investigations are completed over the next few years.”

Some environmentalists aren’t pleased. “This policy does seem to be part of a pattern we have seen with the DoD,” says Reeder. “Contamination doesn’t end at the base-line. Where the Department of Defense is found to be the source of PFAS contamination, they do have a certain responsibility to address the cleanup.”

Footing the bill

Money seems to be central to the Department of Defense’s dilatory approach to the PFAS problem. The military’s fiscal year 2024 budget is a whopping $841.4 billion. According to the DoD spokesperson, however, only $9.7 billion is allocated this year to continue testing all of the 710 bases on the military’s manifest and perform cleanups on the hundreds that don’t pass muster. That kind of stingy funding was never going to be adequate, and the price is only likely to rise. 

“A huge driver has been discovering the scope and scale of PFAS contamination as they find out more and more about it,” says Jared Hayes, senior policy adviser for the EWG. “Unfortunately, their budget requests for their environmental remediation programs have been fairly slack.” Reeder estimates that the DoD needs at least twice the amount it’s currently spending if it’s going to keep up with the growing need for cleanup.

To the DoD’s credit, all of its bases are switching to a type of firefighting foam that does not include PFAS, but, according to Hayes, that conversion is not yet complete. While foam that contains PFAS is no longer used in training exercises, it still may be turned to in emergencies. In the meantime, there is always the risk of accidental dispersal of the old, toxic variety. In August, for instance, Brunswick Naval Air Station in Maine saw a spill of more than 50,000 gallons of firefighting foam and PFAS-contaminated water. In July, a smaller but still considerable 7,000-gal. spill occurred at Cannon Air Force Base in New Mexico. 

Taking it to the courts

These accidents, along with the legacy contamination of decades of PFAS-contaminated foam and the military’s go-slow approach to cleanup is causing some states to turn to the courts to seek both remuneration and remediation. Over the past six years, 27 states, including New Mexico, New York, and Washington, have filed suit against the military to pay for groundwater and soil cleanup. Those cases have been consolidated in the U.S. District Court in South Carolina, and in February, the DoD moved to dismiss, citing a provision in tort law that shields the government from liability for the discretionary actions of government employees—which, the DoD says, includes the military personnel who would be handling the foam. The court has yet to rule on the motion. New Mexico has filed a similar suit over the spill at Cannon Air Force Base, as has New Hampshire, which is suing over decades of PFAS pollution seeping off of local Pease Air Force Base.

If recent history is any indication, states and localities have reason to pile on more suits. In June, chemical giant and PFAS manufacturer 3M settled a lawsuit, also consolidated in South Carolina, in which it agreed to pay more than 300 plaintiff communities a total $10.3 billion to fund water cleanup operations. In the same month, a similar settlement was reached with DuPont and its spinoff companies, for $1.18 billion. Suing the government is a heavier lift than suing a private corporation, as the February motion by the DoD suggests, but that doesn’t mean it’s hopeless. What’s more, potential plaintiffs are increasingly motivated to act. 

“There are communities that are really angry about this and rightfully so,” says Hayes. “Their wells have been poisoned for years without them knowing about it, and now this [memo says that] many of them are just going to have to wait longer and longer. They don’t have a clear timeline, they don’t know when they might get clean water, and they’re having to treat it themselves.”

The DoD defends its current policy of doing the most it can with the limited resources it has available. “Our recently published PFAS clean-up prioritization policy reinforces our commitment to fulfilling our PFAS-related cleanup responsibilities,” said Owens, referring to the Sept. 3 memo. “This policy is DoD’s initial step to implement EPA’s new PFAS regulation and prioritizes action in locations where PFAS levels in drinking water are the highest.” In the meantime, hundreds of communities across the country will likely continue to live with PFAS contamination for untold years to come.

Read the full story here.
Photos courtesy of

This moss survived in space for 9 months

In an experiment on the outside of the International Space Station, a species of moss survived in space for 9 months. And it could have lasted much longer. The post This moss survived in space for 9 months first appeared on EarthSky.

Meet a spreading earthmoss known as Physcomitrella patens. It’s frequently used as a model organism for studies on plant evolution, development, and physiology. In this image, a reddish-brown sporophyte sits at the top center of a leafy gametophore. This capsule contains numerous spores inside. Scientists tested samples like these on the outside of the International Space Station (ISS) to see if they could tolerate the extreme airless environment. And they did. The moss survived in space for 9 months and could have lasted even longer. Image via Tomomichi Fujita/ EurekAlert! (CC BY-SA). Space is a deadly environment, with no air, extreme temperature swings and harsh radiation. Could any life survive there? Reasearchers in Japan tested a type of moss called spreading earthmoss on the exterior of the International Space Station. The moss survived for nine months, and the spores were still able to reproduce when brought back to Earth. Moss survived in space for 9 months Can life exist in space? Not simply on other planets or moons, but in the cold, dark, airless void of space itself? Most organisms would perish almost immediately, to be sure. But researchers in Japan recently experimented with moss, with surprising results. They said on November 20, 2025, that more than 80% of their moss spores survived nine months on the outside of the International Space Station. Not only that, but when brought back to Earth, they were still capable of reproducing. Nature, it seems, is even tougher than we thought! Amazingly, the results show that some primitive plants – not even just microorganisms – can survive long-term exposure to the extreme space environment. The researchers published their peer-reviewed findings in the journal iScience on November 20, 2025. A deadly environment for life Space is a horrible place for life. The lack of air, radiation and extreme cold make it pretty much unsurvivable for life as we know it. As lead author Tomomichi Fujita at Hokkaido University in Japan stated: Most living organisms, including humans, cannot survive even briefly in the vacuum of space. However, the moss spores retained their vitality after nine months of direct exposure. This provides striking evidence that the life that has evolved on Earth possesses, at the cellular level, intrinsic mechanisms to endure the conditions of space. This #moss survived 9 months directly exposed to the vacuum space and could still reproduce after returning to Earth. ? ? spkl.io/63322AdFrpTomomichi Fujita & colleagues@cp-iscience.bsky.social — Cell Press (@cellpress.bsky.social) 2025-11-24T16:00:02.992Z What about moss? Researchers wanted to see if any Earthly life could survive in space’s deadly environment for the long term. To find out, they decided to do some experiments with a type of moss called spreading earthmoss, or Physcomitrium patens. The researchers sent hundreds of sporophytes – encapsulated moss spores – to the International Space Station in March 2022, aboard the Cygnus NG-17 spacecraft. They attached the sporophyte samples to the outside of the ISS, where they were exposed to the vacuum of space for 283 days. By doing so, the samples were subjected to high levels of UV (ultraviolet) radiation and extreme swings of temperature. The samples later returned to Earth in January 2023. The researchers tested three parts of the moss. These were the protonemata, or juvenile moss; brood cells, or specialized stem cells that emerge under stress conditions; and the sporophytes. Fujita said: We anticipated that the combined stresses of space, including vacuum, cosmic radiation, extreme temperature fluctuations and microgravity, would cause far greater damage than any single stress alone. Astronauts placed the moss samples on the outside of the International Space Station for the 9-month-long experiment. Incredibly, more than 80% of the the encapsulated spores survived the trip to space and back to Earth. Image via NASA/ Roscosmos. The moss survived! So, how did the moss do? The results were mixed, but overall showed that the moss could survive in space. The radiation was the most difficult aspect of the space environment to withstand. The sporophytes were the most resilient. Incredibly, they were able to survive and germinate after being exposed to -196 degrees Celsius (-320 degrees Fahrenheit) for more than a week. At the other extreme, they also survived in 55° degrees C (131 degrees F) heat for a month. Some brood cells survived as well, but the encased spores were about 1,000 times more tolerant to the UV radiation. On the other hand, none of the juvenile moss survived the high UV levels or the extreme temperatures. Samples of moss spores that germinated after their 9-month exposure to space. Image via Dr. Chang-hyun Maeng/ Maika Kobayashi/ EurekAlert!. (CC BY-SA). How did the spores survive? So why did the encapsulated spores do so well? The researchers said the natural structure surrounding the spore itself helps to protect the spore. Essentially, it absorbs the UV radiation and surrounds the inner spore both physically and chemically to prevent damage. As it turns out, this might be associated with the evolution of mosses. This is an adaptation that helped bryophytes – the group of plants to which mosses belong – to make the transition from aquatic to terrestrial plants 500 million years ago. Overall, more than 80% of the spores survived the journey to space and then back to Earth. And only 11% were unable to germinate after being brought back to the lab on Earth. That’s impressive! In addition, the researchers also tested the levels of chlorophyll in the spores. After the exposure to space, the spores still had normal amounts of chlorophyll, except for chlorophyll a specifically. In that case, there was a 20% reduction. Chlorophyll a is used in oxygenic photosynthesis. It absorbs the most energy from wavelengths of violet-blue and orange-red light. Tomomichi Fujita at Hokkaido University in Japan is the lead author of the new study about moss in space. Image via Hokkaido University. Spores could have survived for 15 years The time available for the experiment was limited to the several months. However, the researchers wondered if the moss spores could have survived even longer. And using mathematical models, they determined the spores would likely have continued to live in space for about 15 years, or 5,600 days, altogether. The researchers note this prediction is a rough estimate. More data would still be needed to make that assessment even more accurate. So the results show just how resilient moss is, and perhaps some other kinds of life, too. Fujita said: This study demonstrates the astonishing resilience of life that originated on Earth. Ultimately, we hope this work opens a new frontier toward constructing ecosystems in extraterrestrial environments such as the moon and Mars. I hope that our moss research will serve as a starting point. Bottom line: In an experiment on the outside of the International Space Station, a species of moss survived in space for nine months. And it could have lasted much longer. Source: Extreme environmental tolerance and space survivability of the moss, Physcomitrium patens Via EurekAlert! Read more: This desert moss could grow on Mars, no greenhouse needed Read more: Colorful life on exoplanets might be lurking in cloudsThe post This moss survived in space for 9 months first appeared on EarthSky.

Medical Imaging Contributing To Water Pollution, Experts Say

By Dennis Thompson HealthDay ReporterTHURSDAY, Dec. 11, 2025 (HealthDay News) — Contrast chemicals injected into people for medical imaging scans...

By Dennis Thompson HealthDay ReporterTHURSDAY, Dec. 11, 2025 (HealthDay News) — Contrast chemicals injected into people for medical imaging scans are likely contributing to water pollution, a new study says.Medicare patients alone received 13.5 billion milliliters of contrast media between 2011 and 2024, and those chemicals wound up in waterways after people excreted them, researchers recently reported in JAMA Network Open.“Contrast agents are necessary for effective imaging, but they don’t disappear after use,” said lead researcher Dr. Florence Doo, an assistant professor at the University of Maryland Medical Intelligent Imaging Center in Baltimore.“Iodine and gadolinium are non-renewable resources that can enter wastewater and accumulate in rivers, oceans and even drinking water,” Doo said in a news release.People undergoing X-ray or CT scans are sometimes given iodine or barium-sulfate compounds that cause certain tissues, blood vessels or organs to light up, allowing radiologists a better look at potential health problems.For MRI scans, radiologists use gadolinium, a substance that alters the magnetic properties of water molecules in the human body.These are critical for diagnosing disease, but they are also persistent pollutants, researchers said in background notes. They aren’t biodegradable, and conventional wastewater treatment doesn’t fully remove them.For the new study, researchers analyzed 169 million contrast-enhanced imaging procedures that Medicare covered over 13 years.Iodine-based contrast agents accounted for more than 95% of the total volume, or nearly 12.9 billion milliliters. Of those, agents used in CT scans of the abdomen and pelvis alone contributed 4.4 billion milliliters.Gadolinium agents were less frequently used, but still contributed nearly 600 million milliliters, researchers said. Brain MRIs were the most common scan using these contrast materials.Overall, just a handful of procedures accounted for 80% of all contrast use, researchers concluded.“Our study shows that a small number of imaging procedures drive the majority of contrast use. Focusing on those highest-use imaging types make meaningful changes tractable and could significantly reduce health care’s environmental footprint,” researcher Elizabeth Rula, executive director of the Harvey L. Neiman Health Policy Institute in Reston, Va., said in a news release.Doctors can help by making sure their imaging orders are necessary, while radiologists can lower the doses of contrast agents by basing them on a patient’s weight, researchers said.Biodegradable contrast media are under development, researchers noted. Another solution could involve AI, which might be able to accurately analyze medical imaging scans even if less contrast media is used.“We can’t ignore the environmental consequences of medical imaging,” Doo said. “Stewardship of contrast agents is a measurable and impactful way to align patient care with planetary health and should be an important part of broader health care sustainability efforts.”SOURCES: Harvey L. Neiman Health Policy Institute, news release, Dec. 4, 2025; JAMA Network Open, Dec. 5, 2025Copyright © 2025 HealthDay. All rights reserved.

Cars to AI: How new tech drives demand for specialized materials

Generative artificial intelligence has become widely accepted as a tool that increases productivity. Yet the technology is far from mature. Large language models advance rapidly from one generation to the next, and experts can only speculate how AI will affect the workforce and people’s daily lives. As a materials scientist, I am interested in how materials and the technologies that derive from them affect society. AI is one example of a technology driving global change—particularly through its demand for materials and rare minerals. But before AI evolved to its current level, two other technologies exemplified the process created by the demand for specialized materials: cars and smartphones. Often, the mass adoption of a new invention changes human behavior, which leads to new technologies and infrastructures reliant upon the invention. In turn, these new technologies and infrastructures require new or improved materials—and these often contain critical minerals: those minerals that are both essential to the technology and strain the supply chain. The unequal distribution of these minerals gives leverage to the nations that produce them. The resulting power shifts strain geopolitical relations and drive the search for new mineral sources. New technology nurtures the mining industry. The car and the development of suburbs At the beginning of the 20th century, only 5 out of 1,000 people owned a car, with annual production around a few thousand. Workers commuted on foot or by tram. Within a 2-mile radius, many people had all they needed: from groceries to hardware, from school to church, and from shoemakers to doctors. Then, in 1913, Henry Ford transformed the industry by inventing the assembly line. Now, a middle class family could afford a car: Mass production cut the price of the Model T from US$850 in 1908 to $360 in 1916. While the Great Depression dampened the broad adoption of the car, sales began to increase again after the end of World War II. With cars came more mobility, and many people moved farther away from work. In the 1940s and 1950s, a powerful highway lobby that included oil, automobile, and construction interests promoted federal highway and transportation policies, which increased automobile dependence. These policies helped change the landscape: Houses were spaced farther apart, and located farther away from the urban centers where many people worked. By the 1960s, two-thirds of American workers commuted by car, and the average commute had increased to 10 miles. Public policy and investment favored suburbs, which meant less investment in city centers. The resulting decay made living in downtown areas of many cities undesirable and triggered urban renewal projects. Long commutes added to pollution and expenses, which created a demand for lighter, more fuel-efficient cars. But building these required better materials. In 1970, the entire frame and body of a car was made from one steel type, but by 2017, 10 different, highly specialized steels constituted a vehicle’s lightweight form. Each steel contains different chemical elements, such as molybdenum and vanadium, which are mined only in a few countries. While the car supply chain was mostly domestic until the 1970s, the car industry today relies heavily on imports. This dependence has created tension with international trade partners, as reflected by higher tariffs on steel. The cellphone and American life The cellphone presents another example of a technology creating a demand for minerals and affecting foreign policy. In 1983, Motorola released the DynaTAC, the first commercial cellular phone. It was heavy, expensive, and its battery lasted for only half an hour, so few people had one. Then in 1996, Motorola introduced the flip phone, which was cheaper, lighter, and more convenient to use. The flip phone initiated the mass adoption of cellphones. However, it was still just a phone: Unlike today’s smartphones, all it did was send and receive calls and texts. In 2007, Apple redefined communication with the iPhone, inventing the touchscreen and integrating an internet navigator. The phone became a digital hub for navigating, finding information, and building an online social identity. Before smartphones, mobile phones supplemented daily life. Now, they structure it. In 2000, fewer than half of American adults owned a cellphone, and nearly all who did used it only sporadically. In 2024, 98% of Americans over the age of 18 reported owning a cellphone, and over 90% owned a smartphone. Without the smartphone, most people cannot fulfill their daily tasks. Many individuals now experience nomophobia: They feel anxious without a cellphone. Around three-quarters of all stable elements are represented in the components of each smartphone. These elements are necessary for highly specialized materials that enable touchscreens, displays, batteries, speakers, microphones, and cameras. Many of these elements are essential for at least one function and have an unreliable supply chain, which makes them critical. Critical materials and AI Critical materials give leverage to countries that have a monopoly in mining and processing them. For example, China has gained increased power through its monopoly on rare earth elements. In April 2025, in response to U.S. tariffs, China stopped exporting rare earth magnets, which are used in cellphones. The geopolitical tensions that resulted demonstrate the power embodied in the control over critical minerals. The mass adoption of AI technology will likely change human behavior and bring forth new technologies, industries, and infrastructure on which the U.S. economy will depend. All of these technologies will require more optimized and specialized materials and create new material dependencies. By exacerbating material dependencies, AI could affect geopolitical relations and reorganize global power. America has rich deposits of many important minerals, but extraction of these minerals comes with challenges. Factors including slow and costly permitting, public opposition, environmental concerns, high investment costs, and an inadequate workforce all can prevent mining companies from accessing these resources. The mass adoption of AI is already adding pressure to overcome these factors and to increase responsible domestic mining. While the path from innovation to material dependence spanned a century for cars and a couple of decades for cellphones, the rapid advancement of large language models suggests that the scale will be measured in years for AI. The heat is already on. Peter Müllner is a distinguished professor in materials science and engineering at Boise State University. This article is republished from The Conversation under a Creative Commons license. Read the original article.

Generative artificial intelligence has become widely accepted as a tool that increases productivity. Yet the technology is far from mature. Large language models advance rapidly from one generation to the next, and experts can only speculate how AI will affect the workforce and people’s daily lives. As a materials scientist, I am interested in how materials and the technologies that derive from them affect society. AI is one example of a technology driving global change—particularly through its demand for materials and rare minerals. But before AI evolved to its current level, two other technologies exemplified the process created by the demand for specialized materials: cars and smartphones. Often, the mass adoption of a new invention changes human behavior, which leads to new technologies and infrastructures reliant upon the invention. In turn, these new technologies and infrastructures require new or improved materials—and these often contain critical minerals: those minerals that are both essential to the technology and strain the supply chain. The unequal distribution of these minerals gives leverage to the nations that produce them. The resulting power shifts strain geopolitical relations and drive the search for new mineral sources. New technology nurtures the mining industry. The car and the development of suburbs At the beginning of the 20th century, only 5 out of 1,000 people owned a car, with annual production around a few thousand. Workers commuted on foot or by tram. Within a 2-mile radius, many people had all they needed: from groceries to hardware, from school to church, and from shoemakers to doctors. Then, in 1913, Henry Ford transformed the industry by inventing the assembly line. Now, a middle class family could afford a car: Mass production cut the price of the Model T from US$850 in 1908 to $360 in 1916. While the Great Depression dampened the broad adoption of the car, sales began to increase again after the end of World War II. With cars came more mobility, and many people moved farther away from work. In the 1940s and 1950s, a powerful highway lobby that included oil, automobile, and construction interests promoted federal highway and transportation policies, which increased automobile dependence. These policies helped change the landscape: Houses were spaced farther apart, and located farther away from the urban centers where many people worked. By the 1960s, two-thirds of American workers commuted by car, and the average commute had increased to 10 miles. Public policy and investment favored suburbs, which meant less investment in city centers. The resulting decay made living in downtown areas of many cities undesirable and triggered urban renewal projects. Long commutes added to pollution and expenses, which created a demand for lighter, more fuel-efficient cars. But building these required better materials. In 1970, the entire frame and body of a car was made from one steel type, but by 2017, 10 different, highly specialized steels constituted a vehicle’s lightweight form. Each steel contains different chemical elements, such as molybdenum and vanadium, which are mined only in a few countries. While the car supply chain was mostly domestic until the 1970s, the car industry today relies heavily on imports. This dependence has created tension with international trade partners, as reflected by higher tariffs on steel. The cellphone and American life The cellphone presents another example of a technology creating a demand for minerals and affecting foreign policy. In 1983, Motorola released the DynaTAC, the first commercial cellular phone. It was heavy, expensive, and its battery lasted for only half an hour, so few people had one. Then in 1996, Motorola introduced the flip phone, which was cheaper, lighter, and more convenient to use. The flip phone initiated the mass adoption of cellphones. However, it was still just a phone: Unlike today’s smartphones, all it did was send and receive calls and texts. In 2007, Apple redefined communication with the iPhone, inventing the touchscreen and integrating an internet navigator. The phone became a digital hub for navigating, finding information, and building an online social identity. Before smartphones, mobile phones supplemented daily life. Now, they structure it. In 2000, fewer than half of American adults owned a cellphone, and nearly all who did used it only sporadically. In 2024, 98% of Americans over the age of 18 reported owning a cellphone, and over 90% owned a smartphone. Without the smartphone, most people cannot fulfill their daily tasks. Many individuals now experience nomophobia: They feel anxious without a cellphone. Around three-quarters of all stable elements are represented in the components of each smartphone. These elements are necessary for highly specialized materials that enable touchscreens, displays, batteries, speakers, microphones, and cameras. Many of these elements are essential for at least one function and have an unreliable supply chain, which makes them critical. Critical materials and AI Critical materials give leverage to countries that have a monopoly in mining and processing them. For example, China has gained increased power through its monopoly on rare earth elements. In April 2025, in response to U.S. tariffs, China stopped exporting rare earth magnets, which are used in cellphones. The geopolitical tensions that resulted demonstrate the power embodied in the control over critical minerals. The mass adoption of AI technology will likely change human behavior and bring forth new technologies, industries, and infrastructure on which the U.S. economy will depend. All of these technologies will require more optimized and specialized materials and create new material dependencies. By exacerbating material dependencies, AI could affect geopolitical relations and reorganize global power. America has rich deposits of many important minerals, but extraction of these minerals comes with challenges. Factors including slow and costly permitting, public opposition, environmental concerns, high investment costs, and an inadequate workforce all can prevent mining companies from accessing these resources. The mass adoption of AI is already adding pressure to overcome these factors and to increase responsible domestic mining. While the path from innovation to material dependence spanned a century for cars and a couple of decades for cellphones, the rapid advancement of large language models suggests that the scale will be measured in years for AI. The heat is already on. Peter Müllner is a distinguished professor in materials science and engineering at Boise State University. This article is republished from The Conversation under a Creative Commons license. Read the original article.

Synthetic chemicals in food system creating health burden of $2.2tn a year, report finds

Scientists issue urgent warning about chemicals, found to cause cancer and infertility as well as harming environmentScientists have issued an urgent warning that some of the synthetic chemicals that help underpin the current food system are driving increased rates of cancer, neurodevelopmental conditions and infertility, while degrading the foundations of global agriculture.The health burden from phthalates, bisphenols, pesticides and Pfas “forever chemicals” amounts to up to $2.2tn a year – roughly as much as the profits of the world’s 100 largest publicly listed companies, according to the report published on Wednesday. Continue reading...

Scientists have issued an urgent warning that some of the synthetic chemicals that help underpin the current food system are driving increased rates of cancer, neurodevelopmental conditions and infertility, while degrading the foundations of global agriculture.The health burden from phthalates, bisphenols, pesticides and Pfas “forever chemicals” amounts to up to $2.2tn a year – roughly as much as the profits of the world’s 100 largest publicly listed companies, according to the report published on Wednesday.Most ecosystem damage remains unpriced, they say, but even a narrow accounting of ecological impacts, taking into account agricultural losses and meeting water safety standards for Pfas and pesticides, implies a further cost of $640bn. There are also potential consequences for human demographics, with the report concluding that if exposure to endocrine disruptors such as bisphenols and phthalates persists at current rates, there could be between 200 million and 700 million fewer births between 2025 and 2100.The report is the work of dozens of scientists from organisations including the Institute of Preventive Health, the Center for Environmental Health, Chemsec, and various universities in the US and UK, including the University of Sussex and Duke University. It was led by a core team from Systemiq, a company that invests in enterprises aimed at fulfilling the UN sustainable development goals and the Paris agreement on climate change.The authors said they had focused on the four chemical types examined because “they are among the most prevalent and best studied worldwide, with robust evidence of harm to human and ecological health”.One of the team, Philip Landrigan, a paediatrician and professor of global public health at Boston College, called the report a “wake-up call”. He said: “The world really has to wake up and do something about chemical pollution. I would argue that the problem of chemical pollution is every bit as serious as the problem with climate change.”Human and ecosystem exposure to synthetic chemicals has surged since the end of the second world war, with chemical production increasing by more than 200 times since the 1950s and more than 350,000 synthetic chemicals currently on the global market.Three years ago, researchers from the Stockholm Resilience Centre (SRC) concluded that chemical pollution had crossed a “planetary boundary”, the point at which human-made changes to the Earth push it outside the stable environment of the past 10,000 years, the period in which modern human civilisation has developed.Unlike with pharmaceuticals, there are few safeguards to test for the safety of industrial chemicals before they are put into use, and little monitoring of their effects once they are. Some have been found to be disastrously toxic to humans, animals and ecosystems, leaving governments to pick up the bill.This report assesses the impact of four families of synthetic chemicals endemic in global food production. Phthalates and bisphenols are commonly used as plastic additives, employed in food packaging and disposable gloves used in food preparation.Pesticides underpin industrial agriculture, with large-scale monoculture farms spraying thousands of gallons on crops to eliminate weeds and insects, and many crops treated after harvest to maintain freshness.Pfas are used in food contact materials such as greaseproof paper, popcorn tubs and ice-cream cartons, but have also accumulated in the environment to such an extent they enter food via air, soil and water contamination.All have been linked to harms including endocrine (hormone system) disruption, cancers, birth defects, intellectual impairment and obesity.Landrigan said that during his long career in paediatric public health he had seen a shift in the conditions affecting children. “The amount of disease and death caused by infectious diseases like measles, like scarlet fever, like pertussis, has come way down,” he said. “By contrast, there’s been this incredible increase in rates of non-communicable diseases. And of course, there’s no single factor there … but the evidence is very clear that increasing exposure to hundreds, maybe even thousands of manufactured chemicals is a very important cause of disease in kids.”Landrigan said he was most concerned about “the chemicals that damage children’s developing brains and thus make them less intelligent, less creative, just less able to give back to society across the whole of their lifetimes”.“And the second class of chemicals that I worry really worried about are the endocrine-disrupting chemicals,” he added. “Bisphenol would be the classic example, that get into people’s bodies at every age, damage the liver, change cholesterol metabolism, and result in increased serum cholesterol, increased obesity, increased diabetes, and those internally to increase rates of heart disease and stroke.”Asked whether the report could have looked beyond the groups of chemicals studied, Landridge said: “I would argue that they’re only the tip of the iceberg. They’re among the very small number of chemicals, maybe 20 or 30 chemicals where we really have solid toxicologic information.“What scares the hell out of me is the thousands of chemicals to which we’re all exposed every day about which we know nothing. And until one of them causes something obvious, like children to be born with missing limbs, we’re going to go on mindlessly exposing ourselves.”

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