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Military's use of toxic 'forever chemicals' leaves lasting scars

News Feed
Thursday, April 10, 2025

This excerpt comes from the forthcoming book Poisoning the Well: How Forever Chemicals Contaminated America, which details how a set of toxic compounds have devastated entire communities across the country. It has been edited for length and clarity. Colorado Springs and its suburbs in El Paso County are surrounded not only by natural wonders like the Garden of the Gods, a massive park filled with red rock formations, but also several military installations, including Peterson Space Force Base, the US Air Force Academy, and the US Army’s Fort Carson. Mark Favors grew up in the shadow of these bases, part of a tightly knit Black family within the largely White Colorado Springs. As Mark tells it, Cold War–era patriotism molded the city into a libertarian stronghold in which the small-government ideology reigned and “politics was highly, highly, highly discouraged.” Military service, on the other hand, was the bread and butter of the community, a major source of jobs in a rural region. The area is home to about 45,000 military personnel and 15,000 federal employees, as well approximately 90,000 veterans. Mark’s family is no different. Today an ICU nurse in New York City, Mark is himself a veteran, as is his uncle and multiple other relatives. His large squadron of cousins, multiple-times-removed—some blood relations, and others not—have served in most branches of the military, leaving an intercontinental web of bootprints in their wake. Likewise, his mom, Lillian Clark Favors, is a retired Air Force security manager, and his grandmother, Arletha, spent thirty-six years working as a civil servant at Fort Carson. It is a staunchly patriot family—but one that has, in recent years, begun to question why this long history of military service seems to dovetail with an extensive pattern of disease. Sitting at his mother’s dining room table in Colorado Springs, Mark attempted to tabulate exactly how many people in his extended family had suffered from various iterations of cancer and other sometimes-fatal illnesses. That headcount, he estimated, includes more than two dozen cousins, siblings, and in-laws—but does not even begin to touch upon the friends and neighbors who have similar stories. “Another one of my cousins, he’s getting a port now,” Mark said, referring to the under-skin catheters used in kidney dialysis. At least five of his sick family members suffered from kidney-related diseases. Mark has also noticed how tightly the illness tracks with proximity to certain bases. As far back as 1987, when his mother’s department was transferred from the older Ent Air Force Base, near downtown Colorado Springs, to a new building at Peterson Space Base, on the outskirts of the city, colleagues started falling ill. A colonel in her group, Lillian remembered, decided to retire so that he would be able to take his grandson to kindergarten every day. “And then he got sick, and it was like, in two months, he was dead,” she said. Most striking for Mark’s family, however, is the number of relatives who developed diseases after moving to Widefield, about five miles southwest of Peterson. On retirement from the base, Mark’s grandmother decided to turn her hobby of making porcelain dolls into a second career and relocated to the suburb with her husband and son (Mark’s father) in the late 1970s. Mark’s cousin Vikki recalled the moment when her grandmother pulled the family together one Thanksgiving in the late 1980s—with the news that her doctors had discovered a lump and that she was going to need surgery. Following the diagnosis and the surgery, Arletha went through a course of chemotherapy. “And then she started having issues breathing,” Vikki continued. Her cancer had returned. She succumbed to her illness on November 19, 1991, after about a week in the hospital. “She just never was able to recover,” Vikki said. Members of the immediate family who never moved from Colorado Springs to Widefield enjoyed long lives, several living into their nineties. Meanwhile, Arletha’s husband also died of cancer, and her son, who had no kidney issues prior to living in Widefield, developed renal failure and had a subsequent kidney transplant. But after the new kidney became cancerous, he too passed away, at the age of sixty-nine, in 2017. Less than a year later, Mark was visiting his mother when a CBS This Morning special came on TV. As they watched an episode about perfluorochemicals—PFCs—Mark had an unsettling epiphany. “I just started doing more research into it,” Mark remembered, detailing how he began exploring Colorado state environmental mapping data. PFCs, which today are known as PFAS, are a family of synthetic chemicals that have been used in a wide variety of household products from nonstick pans to waterproof clothing and cosmetics to fast food wrappers. These substances have also been linked to various cancers, kidney, liver and thyroid problems and immune system and fertility issues. They were also used for years in military-grade firefighting foam known as aqueous film-forming foam, or AFFF, which in many cases leached off of bases and into the water supplies of unsuspecting communities nearby. Among Mark’s first moves was to talk to local politicians, as well as try to get his family’s water tested. Ultimately, Mark discovered that the Widefield property was contaminated with PFAS at levels that far surpassed the Environmental Protection Agency’s (EPA) drinking water health advisories at the time. Courtesy of Mark Favors Several sets of groundwater samples taken just a half mile west of the property between 2016 and 2018 indicated that the area’s contamination was up to four times those safety thresholds. Rising from his seat at the dining table, Mark milled around the room and picked up a framed certificate that honored his mother for her four decades of service at Peterson. Similar certificates are likely sitting in houses all over Colorado Springs, documenting not only years of service but years of exposure to toxic chemicals. Members of the Favors family had no idea that the firefighting foam being used on nearby bases contained PFAS, or that those chemicals were dangerous, or that they were leaching into the local water supply. But the military, like industry, already had some indication of AFFF’s toxic effects decades before such information became public knowledge. In 1971, the Air Force Research Laboratory flagged the foam in use at the time—3M’s “Light Water”—as both a possible threat to certain fish and a “serious pollutant,” due to its inability to easily break down in water. A few years later, Air Force researchers tested another iteration of Light Water and deemed it “less toxic” than previous PFAS-based foams, but still said it should not be released in substantial quantities if animals would be exposed for several days after the release. In the same era, a 1975 report prepared by a contractor for the Defense Department affirmed that AFFF foams contain PFAS “which are largely resistant to biodegradation.” Five years later, a Navy review suggested that AFFF shouldn’t be used in training at all, noting that it “may present serious environmental pollution problems” and that existing treatment facilities cannot process the substance. Other problematic aspects of PFAS that are more widely known today, such as their toxic byproducts when PFAS are heated, were also noted in the 1970s and 1980s. There did appear to be some knowledge gaps, however, including, as one naval commander put it in correspondence accompanying a 1978 report, 3M’s failure to disclose “any useful information” about the foam’s ingredients. Nevertheless, a 1979 navy guide had also already listed “firefighting agents (e.g., AFFF)” as “hazardous.” Meanwhile, a 1981 document went as far as raising legal concerns, flagging AFFF sludge for evaluation as potentially hazardous waste “to assess the Navy’s responsibility” under a waste cleanup law. The knowledge soon trickled down to the installation level, with a 1985 report conducted at Peterson likewise describing AFFF as a “hazardous material,” though the report said that it did not produce hazardous waste. In 1991, assessments from the Army Corps of Engineers conducted at Fort Campbell in Kentucky, Fort Ord in California, and Fort Carson in Colorado all recommended a transition to “nonhazardous substitutes.” These warnings did have some effect—at least at select military installations. The Colorado Army base started using water rather than foam for training exercises in 1993, according to a Fort Carson spokesperson. Subsequent policy allowed AFFF to be used only in emergencies, until the base replaced it entirely in 2018. Meanwhile, neighboring Peterson took much longer to act—despite a 1989 internal analysis that demanded better management of AFFF waste. But a central issue was that the air force simply has more planes on their installations than does the army on theirs, and jet fuel is particularly flammable when vaporized at high temperatures. In fact, the Federal Aviation Administration for years required all airport firefighters to test their AFFF supplies—and until 2019, the foam was discharged into the environment. Regardless of exactly why the military continued to use AFFF long after the hazards were known, the results were hard-hitting: in communities like Widefield, the firefighting foam flowed into the local water supply—and ultimately tainted residential taps. To Mark Favors, that fact embodies the region’s symbiotic yet subservient relationship with the Defense Department, which he said has left a “trail of human devastation” in its path. Given the extent of the contamination and the onslaught of illnesses that have rattled families across El Paso County, both Mark and his mother, Lillian, now look back at past years with newfound suspicion. “It just kind of makes you wonder, as I say, did they know there was a problem from the beginning, when they started buying the foam or whatever?” Lillian asked. “Did they know?” By November 2016, the US Army Corps of Engineers had detected PFAS at Peterson—noting that the chemicals “may present potential, non-carcinogenic risks to human health and the environment.” Subsequent inspections, published the following year, found significant levels of PFAS in the groundwater at the base’s fire training area. Although no drinking water wells were immediately adjacent to that area, the “migration of PFAS-impacted groundwater offsite is possible and downgradient drinking water wells could be impacted,” the authors concluded. Even down the I-25 highway at Fort Carson, the US Army base where AFFF hadn’t been used in more than three decades, the environment has remained contaminated both on and off the base itself. At multiple spots cited in a January 2022 report, levels of several types of PFAS exceeded risk thresholds set by military leadership—who use those levels to determine the need for further investigation of a given site. In response to the findings, a spokesperson said that the army would evaluate “the nature and extent of PFAS releases and conduct risk assessments using the latest EPA toxicity data.” Such contamination is by no means limited to Colorado, but it has reached military families via vastly different pathways. Peterson’s PFAS pollution has largely flowed into the faucets of off-installation communities downstream, while households on-base have benefited from clean drinking water supplied by Colorado Springs Utilities. This was not necessarily the case on other Defense Department establishments: an internal memorandum showed that as of December 2019, the military served as the direct drinking water provider for about 175,000 people in twenty-four on-site neighborhoods in which levels of PFOA, PFOS, or both were considered unsafe. After the EPA updated the levels that were considered safe in 2022, an advocacy organization called the Environmental Working Group estimated that 600,000 service members were imbibing contaminated water. Meanwhile, blood tests issued to military firefighters over the past few years—as mandated by Congress—have revealed PFAS in virtually all samples. At least one scathing assessment of the military’s behavior has come from within—from the inspector general (IG), an independent internal watchdog for the Defense Department. In 2021, the watchdog dinged the military for declining to “proactively mitigate” risks related to AFFF, contrary to its own policies. While officials had issued a “risk alert” for the foam in 2011, that warning was never elevated, and administrators therefore did not have to respond—and they didn’t until 2016. The watchdog also found “no evidence” that officials on bases, including firefighters, were made aware of the alert. “As a result, people and the environment may have been exposed to preventable risks from PFAS‑containing AFFF,” the report said. Richard Kidd, a high-ranking military official overseeing environmental issues, justified the behavior on the grounds that the military “learned about the health hazards posed by PFAS basically at the same pace as the rest of America.” Only when the EPA issued a final health advisory in 2016 could the Defense Department “take objective, measurable actions,” he added. Yet to many, the military’s actions are too little, too late. Former Rep. Dan Kildee (D-Mich.), a vocal advocate for PFAS action, lamented in a March 2024 interview what he described as “the lack of urgency at the very top of the Defense Department” across presidential administrations. Reached for comment in early 2024 under what was then the Biden administration, a spokesperson for the Pentagon’s leadership declined to answer a list of questions about the military’s use of AFFF, its early knowledge about the substance’s pollution potential, or suggestions that it should have been more proactive. Courtesy of Mark Favors In the spring of 2019, the environment subpanel of the congressional House Oversight and Reform Committee began holding a series of hearings on PFAS. The first three sessions established scientific facts about the substances and featured witness testimony about the pervasiveness of the compounds. They also included corporate voices who downplayed the public health risk, as Harley Rouda—a California Democrat and subcommittee chairman at the time—told his colleagues. The goal of the fourth meeting, in November 2019, he explained, was to encourage “immediate federal action to regulate and cleanup these dangerous chemicals.” Mark Favors was there to testify, revisiting his family’s painful experiences of cancer and death. He spoke alongside actor Mark Ruffalo, who portrayed Rob Bilott, a lawyer who helped bring the PFAS issue into public view and represented contamination victims,in Dark Waters—a film that dramatized the lawyer’s fight against DuPont. Both Bilott and resident Bucky Bailey, born missing one nostril after his mother was exposed to PFOA from working at DuPont while pregnant, were sitting in the gallery during the testimonies. At first, Mark Favors was confused as to why he, out of all PFAS activists, was chosen to speak alongside Ruffalo that day. But then he remembered the sheer number of cancer-related deaths that had stricken his family members, many of whom were veterans. “Most of them survived either Korea, Vietnam, or Iraq, and they’re now in a military cemetery—not for combat wounds but for being poisoned by the military,” Mark said. In addition to sharing his family’s experiences, Mark’s goal in testifying was to push for a congressional investigation into wrongdoing related to PFAS. At the helm of any such investigation, he believes, should be an impartial entity, independent of the Defense Department. Mark noted that courts have held the air force accountable for other wrongs, like failing to notify the FBI about an assault conviction of a former serviceman. After that man went on to carry out a 2017 mass shooting, the air force had to pay $230 million to affected families. But when it comes to contamination, the law dictates that the Department of Defense leads all investigations of pollution that begins on its property, rather than the EPA. And at this point, Mark’s confidence in the Defense Department has been badly shaken, to put it mildly. During the November 2019 hearing, Republicans and Democrats alike professed a commitment to ensuring that American communities have access to clean, uncontaminated drinking water—although they had very different thoughts about how to get there. Rep. James Comer (R-Ky.) cautioned against “taking any sweeping actions” that could harm the economy, while stressing that he does “wholeheartedly support if any families have been poisoned intentionally by corporate America that they get compensated for that.” On the other side of the aisle, Rep. Alexandria Ocasio-Cortez (D-N.Y.) used most of her time to revisit Mark’s main points, reflecting on the notion that “the army has said this is dangerous.” “That is why we need subpoenas issued for this and we need a comprehensive investigation from Congress,” Mark said in his testimony. “I concur. I concur with you, Mr. Favors,” the congresswoman agreed. Courtesy of Mark Favors The military as a whole is evaluating hundreds of potentially polluted bases to see which might require PFAS cleanup. By the end of 2023, the Defense Department had assessed more than 700 bases and found that 574 of them needed remediation. But such widespread restoration could take years — well into the 2030s for some bases and through 2048 for one particularly problematic site. Nonetheless, the military was taking some intermediate cleanup steps at a small fraction of these polluted installations—just forty as of 2024—while the larger process played out. Amid the lucky locations were Peterson and Fort Carson. Mark Favors has pressed on in hopes that one distant Hail Mary might rattle the scoreboard that has thus far indicated repeated defeat. After all, he explained, the mission of “taking on the Pentagon is not for the weak.” He went so far as to chase down then-Sen. Kamala Harris (D-Calif.) after a PFAS-related hearing, upon remembering that Harris’s stepson had graduated from Colorado College in Colorado Springs in 2017. “You remember when you went to your stepson’s graduation?” Mark asked her. “You know the creek behind Colorado College? . . . That’s all contaminated with PFAS.” Following that revelation, he recalled, Harris’s “mouth literally hit the floor.” What Mark would want from a congressional investigation, in theory, is quite simple. He would aim to “to find out what really happened, how pervasive is it, what can be done to prevent it.” Another critical component would involve holding “people accountable if there was something nefarious, as the documents imply.” A key reason behind the need for such an investigation, from Mark’s perspective, is the lack of legal recourse. Mark has faced repeated stumbling blocks in his quest “to get justice and accountability,” as he said in his 2019 congressional testimony.

This excerpt comes from the forthcoming book Poisoning the Well: How Forever Chemicals Contaminated America, which details how a set of toxic compounds have devastated entire communities across the country. It has been edited for length and clarity. Colorado Springs and its suburbs in El Paso County are surrounded not only by natural wonders like the Garden...

This excerpt comes from the forthcoming book Poisoning the Well: How Forever Chemicals Contaminated America, which details how a set of toxic compounds have devastated entire communities across the country. It has been edited for length and clarity.

Colorado Springs and its suburbs in El Paso County are surrounded not only by natural wonders like the Garden of the Gods, a massive park filled with red rock formations, but also several military installations, including Peterson Space Force Base, the US Air Force Academy, and the US Army’s Fort Carson.

Mark Favors grew up in the shadow of these bases, part of a tightly knit Black family within the largely White Colorado Springs.

As Mark tells it, Cold War–era patriotism molded the city into a libertarian stronghold in which the small-government ideology reigned and “politics was highly, highly, highly discouraged.”

Military service, on the other hand, was the bread and butter of the community, a major source of jobs in a rural region. The area is home to about 45,000 military personnel and 15,000 federal employees, as well approximately 90,000 veterans.

Mark’s family is no different. Today an ICU nurse in New York City, Mark is himself a veteran, as is his uncle and multiple other relatives. His large squadron of cousins, multiple-times-removed—some blood relations, and others not—have served in most branches of the military, leaving an intercontinental web of bootprints in their wake.

Likewise, his mom, Lillian Clark Favors, is a retired Air Force security manager, and his grandmother, Arletha, spent thirty-six years working as a civil servant at Fort Carson.

It is a staunchly patriot family—but one that has, in recent years, begun to question why this long history of military service seems to dovetail with an extensive pattern of disease.

Sitting at his mother’s dining room table in Colorado Springs, Mark attempted to tabulate exactly how many people in his extended family had suffered from various iterations of cancer and other sometimes-fatal illnesses. That headcount, he estimated, includes more than two dozen cousins, siblings, and in-laws—but does not even begin to touch upon the friends and neighbors who have similar stories.

“Another one of my cousins, he’s getting a port now,” Mark said, referring to the under-skin catheters used in kidney dialysis. At least five of his sick family members suffered from kidney-related diseases.

Mark has also noticed how tightly the illness tracks with proximity to certain bases. As far back as 1987, when his mother’s department was transferred from the older Ent Air Force Base, near downtown Colorado Springs, to a new building at Peterson Space Base, on the outskirts of the city, colleagues started falling ill.

A colonel in her group, Lillian remembered, decided to retire so that he would be able to take his grandson to kindergarten every day. “And then he got sick, and it was like, in two months, he was dead,” she said.

Most striking for Mark’s family, however, is the number of relatives who developed diseases after moving to Widefield, about five miles southwest of Peterson.

On retirement from the base, Mark’s grandmother decided to turn her hobby of making porcelain dolls into a second career and relocated to the suburb with her husband and son (Mark’s father) in the late 1970s.

Mark’s cousin Vikki recalled the moment when her grandmother pulled the family together one Thanksgiving in the late 1980s—with the news that her doctors had discovered a lump and that she was going to need surgery. Following the diagnosis and the surgery, Arletha went through a course of chemotherapy.

“And then she started having issues breathing,” Vikki continued.

Her cancer had returned. She succumbed to her illness on November 19, 1991, after about a week in the hospital.

“She just never was able to recover,” Vikki said.

Members of the immediate family who never moved from Colorado Springs to Widefield enjoyed long lives, several living into their nineties. Meanwhile, Arletha’s husband also died of cancer, and her son, who had no kidney issues prior to living in Widefield, developed renal failure and had a subsequent kidney transplant. But after the new kidney became cancerous, he too passed away, at the age of sixty-nine, in 2017.

Less than a year later, Mark was visiting his mother when a CBS This Morning special came on TV. As they watched an episode about perfluorochemicals—PFCs—Mark had an unsettling epiphany. “I just started doing more research into it,” Mark remembered, detailing how he began exploring Colorado state environmental mapping data.

PFCs, which today are known as PFAS, are a family of synthetic chemicals that have been used in a wide variety of household products from nonstick pans to waterproof clothing and cosmetics to fast food wrappers. These substances have also been linked to various cancers, kidney, liver and thyroid problems and immune system and fertility issues. They were also used for years in military-grade firefighting foam known as aqueous film-forming foam, or AFFF, which in many cases leached off of bases and into the water supplies of unsuspecting communities nearby.

Among Mark’s first moves was to talk to local politicians, as well as try to get his family’s water tested. Ultimately, Mark discovered that the Widefield property was contaminated with PFAS at levels that far surpassed the Environmental Protection Agency’s (EPA) drinking water health advisories at the time.

Courtesy of Mark Favors

Several sets of groundwater samples taken just a half mile west of the property between 2016 and 2018 indicated that the area’s contamination was up to four times those safety thresholds. Rising from his seat at the dining table, Mark milled around the room and picked up a framed certificate that honored his mother for her four decades of service at Peterson.

Similar certificates are likely sitting in houses all over Colorado Springs, documenting not only years of service but years of exposure to toxic chemicals.

Members of the Favors family had no idea that the firefighting foam being used on nearby bases contained PFAS, or that those chemicals were dangerous, or that they were leaching into the local water supply.

But the military, like industry, already had some indication of AFFF’s toxic effects decades before such information became public knowledge.

In 1971, the Air Force Research Laboratory flagged the foam in use at the time—3M’s “Light Water”—as both a possible threat to certain fish and a “serious pollutant,” due to its inability to easily break down in water.

A few years later, Air Force researchers tested another iteration of Light Water and deemed it “less toxic” than previous PFAS-based foams, but still said it should not be released in substantial quantities if animals would be exposed for several days after the release.

In the same era, a 1975 report prepared by a contractor for the Defense Department affirmed that AFFF foams contain PFAS “which are largely resistant to biodegradation.”

Five years later, a Navy review suggested that AFFF shouldn’t be used in training at all, noting that it “may present serious environmental pollution problems” and that existing treatment facilities cannot process the substance.

Other problematic aspects of PFAS that are more widely known today, such as their toxic byproducts when PFAS are heated, were also noted in the 1970s and 1980s.

There did appear to be some knowledge gaps, however, including, as one naval commander put it in correspondence accompanying a 1978 report, 3M’s failure to disclose “any useful information” about the foam’s ingredients.

Nevertheless, a 1979 navy guide had also already listed “firefighting agents (e.g., AFFF)” as “hazardous.”

Meanwhile, a 1981 document went as far as raising legal concerns, flagging AFFF sludge for evaluation as potentially hazardous waste “to assess the Navy’s responsibility” under a waste cleanup law.

The knowledge soon trickled down to the installation level, with a 1985 report conducted at Peterson likewise describing AFFF as a “hazardous material,” though the report said that it did not produce hazardous waste.

In 1991, assessments from the Army Corps of Engineers conducted at Fort Campbell in Kentucky, Fort Ord in California, and Fort Carson in Colorado all recommended a transition to “nonhazardous substitutes.”

These warnings did have some effect—at least at select military installations. The Colorado Army base started using water rather than foam for training exercises in 1993, according to a Fort Carson spokesperson.

Subsequent policy allowed AFFF to be used only in emergencies, until the base replaced it entirely in 2018.

Meanwhile, neighboring Peterson took much longer to act—despite a 1989 internal analysis that demanded better management of AFFF waste.

But a central issue was that the air force simply has more planes on their installations than does the army on theirs, and jet fuel is particularly flammable when vaporized at high temperatures.

In fact, the Federal Aviation Administration for years required all airport firefighters to test their AFFF supplies—and until 2019, the foam was discharged into the environment.

Regardless of exactly why the military continued to use AFFF long after the hazards were known, the results were hard-hitting: in communities like Widefield, the firefighting foam flowed into the local water supply—and ultimately tainted residential taps.

To Mark Favors, that fact embodies the region’s symbiotic yet subservient relationship with the Defense Department, which he said has left a “trail of human devastation” in its path.

Given the extent of the contamination and the onslaught of illnesses that have rattled families across El Paso County, both Mark and his mother, Lillian, now look back at past years with newfound suspicion.

“It just kind of makes you wonder, as I say, did they know there was a problem from the beginning, when they started buying the foam or whatever?” Lillian asked. “Did they know?”

By November 2016, the US Army Corps of Engineers had detected PFAS at Peterson—noting that the chemicals “may present potential, non-carcinogenic risks to human health and the environment.”

Subsequent inspections, published the following year, found significant levels of PFAS in the groundwater at the base’s fire training area. Although no drinking water wells were immediately adjacent to that area, the “migration of PFAS-impacted groundwater offsite is possible and downgradient drinking water wells could be impacted,” the authors concluded.

Even down the I-25 highway at Fort Carson, the US Army base where AFFF hadn’t been used in more than three decades, the environment has remained contaminated both on and off the base itself.

At multiple spots cited in a January 2022 report, levels of several types of PFAS exceeded risk thresholds set by military leadership—who use those levels to determine the need for further investigation of a given site.

In response to the findings, a spokesperson said that the army would evaluate “the nature and extent of PFAS releases and conduct risk assessments using the latest EPA toxicity data.”

Such contamination is by no means limited to Colorado, but it has reached military families via vastly different pathways.

Peterson’s PFAS pollution has largely flowed into the faucets of off-installation communities downstream, while households on-base have benefited from clean drinking water supplied by Colorado Springs Utilities.

This was not necessarily the case on other Defense Department establishments: an internal memorandum showed that as of December 2019, the military served as the direct drinking water provider for about 175,000 people in twenty-four on-site neighborhoods in which levels of PFOA, PFOS, or both were considered unsafe.

After the EPA updated the levels that were considered safe in 2022, an advocacy organization called the Environmental Working Group estimated that 600,000 service members were imbibing contaminated water.

Meanwhile, blood tests issued to military firefighters over the past few years—as mandated by Congress—have revealed PFAS in virtually all samples.

At least one scathing assessment of the military’s behavior has come from within—from the inspector general (IG), an independent internal watchdog for the Defense Department.

In 2021, the watchdog dinged the military for declining to “proactively mitigate” risks related to AFFF, contrary to its own policies. While officials had issued a “risk alert” for the foam in 2011, that warning was never elevated, and administrators therefore did not have to respond—and they didn’t until 2016.

The watchdog also found “no evidence” that officials on bases, including firefighters, were made aware of the alert.

“As a result, people and the environment may have been exposed to preventable risks from PFAS‑containing AFFF,” the report said.

Richard Kidd, a high-ranking military official overseeing environmental issues, justified the behavior on the grounds that the military “learned about the health hazards posed by PFAS basically at the same pace as the rest of America.”

Only when the EPA issued a final health advisory in 2016 could the Defense Department “take objective, measurable actions,” he added.

Yet to many, the military’s actions are too little, too late.

Former Rep. Dan Kildee (D-Mich.), a vocal advocate for PFAS action, lamented in a March 2024 interview what he described as “the lack of urgency at the very top of the Defense Department” across presidential administrations.

Reached for comment in early 2024 under what was then the Biden administration, a spokesperson for the Pentagon’s leadership declined to answer a list of questions about the military’s use of AFFF, its early knowledge about the substance’s pollution potential, or suggestions that it should have been more proactive.

Courtesy of Mark Favors

In the spring of 2019, the environment subpanel of the congressional House Oversight and Reform Committee began holding a series of hearings on PFAS. The first three sessions established scientific facts about the substances and featured witness testimony about the pervasiveness of the compounds.

They also included corporate voices who downplayed the public health risk, as Harley Rouda—a California Democrat and subcommittee chairman at the time—told his colleagues.

The goal of the fourth meeting, in November 2019, he explained, was to encourage “immediate federal action to regulate and cleanup these dangerous chemicals.”

Mark Favors was there to testify, revisiting his family’s painful experiences of cancer and death.

He spoke alongside actor Mark Ruffalo, who portrayed Rob Bilott, a lawyer who helped bring the PFAS issue into public view and represented contamination victims,in Dark Waters—a film that dramatized the lawyer’s fight against DuPont. Both Bilott and resident Bucky Bailey, born missing one nostril after his mother was exposed to PFOA from working at DuPont while pregnant, were sitting in the gallery during the testimonies.

At first, Mark Favors was confused as to why he, out of all PFAS activists, was chosen to speak alongside Ruffalo that day. But then he remembered the sheer number of cancer-related deaths that had stricken his family members, many of whom were veterans.

“Most of them survived either Korea, Vietnam, or Iraq, and they’re now in a military cemetery—not for combat wounds but for being poisoned by the military,” Mark said.

In addition to sharing his family’s experiences, Mark’s goal in testifying was to push for a congressional investigation into wrongdoing related to PFAS. At the helm of any such investigation, he believes, should be an impartial entity, independent of the Defense Department.

Mark noted that courts have held the air force accountable for other wrongs, like failing to notify the FBI about an assault conviction of a former serviceman. After that man went on to carry out a 2017 mass shooting, the air force had to pay $230 million to affected families.

But when it comes to contamination, the law dictates that the Department of Defense leads all investigations of pollution that begins on its property, rather than the EPA. And at this point, Mark’s confidence in the Defense Department has been badly shaken, to put it mildly.

During the November 2019 hearing, Republicans and Democrats alike professed a commitment to ensuring that American communities have access to clean, uncontaminated drinking water—although they had very different thoughts about how to get there.

Rep. James Comer (R-Ky.) cautioned against “taking any sweeping actions” that could harm the economy, while stressing that he does “wholeheartedly support if any families have been poisoned intentionally by corporate America that they get compensated for that.”

On the other side of the aisle, Rep. Alexandria Ocasio-Cortez (D-N.Y.) used most of her time to revisit Mark’s main points, reflecting on the notion that “the army has said this is dangerous.”

“That is why we need subpoenas issued for this and we need a comprehensive investigation from Congress,” Mark said in his testimony. “I concur. I concur with you, Mr. Favors,” the congresswoman agreed.

Courtesy of Mark Favors

The military as a whole is evaluating hundreds of potentially polluted bases to see which might require PFAS cleanup. By the end of 2023, the Defense Department had assessed more than 700 bases and found that 574 of them needed remediation.

But such widespread restoration could take years — well into the 2030s for some bases and through 2048 for one particularly problematic site.

Nonetheless, the military was taking some intermediate cleanup steps at a small fraction of these polluted installations—just forty as of 2024—while the larger process played out. Amid the lucky locations were Peterson and Fort Carson.

Mark Favors has pressed on in hopes that one distant Hail Mary might rattle the scoreboard that has thus far indicated repeated defeat. After all, he explained, the mission of “taking on the Pentagon is not for the weak.”

He went so far as to chase down then-Sen. Kamala Harris (D-Calif.) after a PFAS-related hearing, upon remembering that Harris’s stepson had graduated from Colorado College in Colorado Springs in 2017.

“You remember when you went to your stepson’s graduation?” Mark asked her. “You know the creek behind Colorado College? . . . That’s all contaminated with PFAS.”

Following that revelation, he recalled, Harris’s “mouth literally hit the floor.”

What Mark would want from a congressional investigation, in theory, is quite simple. He would aim to “to find out what really happened, how pervasive is it, what can be done to prevent it.”

Another critical component would involve holding “people accountable if there was something nefarious, as the documents imply.”

A key reason behind the need for such an investigation, from Mark’s perspective, is the lack of legal recourse. Mark has faced repeated stumbling blocks in his quest “to get justice and accountability,” as he said in his 2019 congressional testimony.

Read the full story here.
Photos courtesy of

The Trump Team Wants to Boost Birth Rates While Poisoning Children

“I want a baby boom,” Trump has said. His administration is indeed exploring a range of approaches to boost the birth rate, including baby bonuses and classes on natural fertility. Yet his focus is entirely on the production of babies. When it comes to keeping these babies alive, this administration is leaving parents on their own, facing some horrifying and unprecedented challenges. It’s common for right-wing American governments, whether at the state or federal level, to be only half-heartedly natalist: restricting abortion, birth control, and sex education, while also failing to embrace any policy that makes it easier to raise a family, like universal childcare, robust public education, school lunch, cash supports for parents, or paid family leave. But the Trump-Vance government has taken this paradox to a new level, with natalist rhetoric far surpassing that of other recent administrations, while real live children are treated with more depraved, life-threatening indifference than in any American government in at least a century. Due to brutal cuts at the Food and Drug Administration, where 20,000 employees have been fired, the administration has suspended one of its quality-control programs for milk, Reuters reported this week. Milk is iconically associated with child health, and this is not a mere storybook whimsy: Most pediatricians regard it as critical for young children’s developing brains and bones. The American Academy of Pediatrics recommends two cups a day for babies between 1 and 2 years old. While some experts—and of course the administration—are downplaying the change, emphasizing that milk will still be regulated, a bird flu epidemic hardly seems like the right time to be cutting corners. A government so focused on making more babies shouldn’t be so indifferent to risks to our nation’s toddlers.This reckless approach to child safety is not limited to food. Also this week, The New York Times reported that the Environmental Protection Agency was canceling tens of millions of dollars in grants for research on environmental hazards to children in rural America. These hazards include pesticides, wildfire smoke, and forever chemicals, and the grants supported research toward solutions to such problems. Many focused on improving child health in red states like Oklahoma. Children are much more vulnerable than adults to the health problems that can stem from exposure to toxins. That makes Trump’s policies, for all his baby-friendly chatter, seem pathologically misopedic; he is reversing bans on so-called “forever chemicals” and repealing limits set by the Biden administration on lead exposure, all of which will have devastating effects on children’s mental and physical development.And of course there’s RFK Jr.’s crazy campaign against vaccines. This week, the health secretary said he was considering removing the Covid-19 vaccine from the list of vaccines the government recommends for children, even though to win Senate confirmation, he had agreed not to alter the childhood vaccine schedule. Even worse, RFK Jr. has used his office to promote disinformation about extensively debunked links between vaccines and autism, while praising unproven “treatments” for measles as an outbreak that has afflicted more than 600 people and killed at least three continues to spread. Trump’s public health cuts are meanwhile imperiling a program that gives free vaccines to children. So far, I haven’t even mentioned children outside the United States. Trump has not only continued Biden’s policy of mass infanticide in Gaza—at least 100 children there have been killed or injured every week by Israeli forces since the dissolution of the ceasefire in March—he has vastly surpassed that shameful record by dismantling USAID. (The Supreme Court demanded that the government restore some of the funding to the already-contracted programs, but it’s unclear what the results of that ruling will be.) Children across the globe will starve to death due to this policy. The cuts to nutrition funding alone, researchers estimate, will kill some 369,000 children who could otherwise have lived. That’s not even counting all the other children’s lives imperiled by USAID funding cuts to vaccines, health services, and maternal care, or the children who will go unprotected now that Trump has cut 69 programs dedicated to tracking child labor, forced labor, and human trafficking.Natalist or exterminationist? Pro-child or rabidly infanticidal? It’s tempting to dismiss such extreme contradictions within the Trump administration as merely chaotic and incoherent. But the situation is worse than that. Trying to boost births while actively making the world less safe for children is creepy—but not in a new way. The contradiction is baked into the eugenicist tradition that Vance and Trump openly embrace. Vance said at an anti-abortion rally in January that he wanted “more babies in the United States of America.” Vance also said he wanted “more beautiful young men and women” to have children. Notice he doesn’t just say “more babies”: the qualifiers are significant. Vance was implying that he wanted the right people to have babies: American, white, able-bodied, “beautiful” people with robust genetics. Children dying because of USAID cuts aren’t part of this vision, presumably, because those children are not American or white. As for infected milk, environmental toxins, or measles—here too, it’s hard not to hear social Darwinist overtones: In a far-right eugenicist worldview, children killed by those things likely aren’t fit for survival. In a more chaotic and dangerous environment, this extremely outdated logic goes, natural selection will ensure that the strongest survive. It’s also worth noting that this way of thinking originates in—and many of these Trump administration policies aim to return us to—an earlier era, when people of all ages, but especially children, were simply poisoned by industrial pollution, unvaccinated for diseases, and unprotected from industrial accidents. In such an unsafe world for children, people had many more of them; the world was such a dangerous place to raise kids that families expected to lose a few. That all-too-recent period is the unspoken context for natalist and eugenicist visions. That’s the world Trump and Vance seem to be nostalgic for, one in which women were constantly pregnant and in labor, and children were constantly dying horrible deaths. Doesn’t that sound pleasant for everyone?

“I want a baby boom,” Trump has said. His administration is indeed exploring a range of approaches to boost the birth rate, including baby bonuses and classes on natural fertility. Yet his focus is entirely on the production of babies. When it comes to keeping these babies alive, this administration is leaving parents on their own, facing some horrifying and unprecedented challenges. It’s common for right-wing American governments, whether at the state or federal level, to be only half-heartedly natalist: restricting abortion, birth control, and sex education, while also failing to embrace any policy that makes it easier to raise a family, like universal childcare, robust public education, school lunch, cash supports for parents, or paid family leave. But the Trump-Vance government has taken this paradox to a new level, with natalist rhetoric far surpassing that of other recent administrations, while real live children are treated with more depraved, life-threatening indifference than in any American government in at least a century. Due to brutal cuts at the Food and Drug Administration, where 20,000 employees have been fired, the administration has suspended one of its quality-control programs for milk, Reuters reported this week. Milk is iconically associated with child health, and this is not a mere storybook whimsy: Most pediatricians regard it as critical for young children’s developing brains and bones. The American Academy of Pediatrics recommends two cups a day for babies between 1 and 2 years old. While some experts—and of course the administration—are downplaying the change, emphasizing that milk will still be regulated, a bird flu epidemic hardly seems like the right time to be cutting corners. A government so focused on making more babies shouldn’t be so indifferent to risks to our nation’s toddlers.This reckless approach to child safety is not limited to food. Also this week, The New York Times reported that the Environmental Protection Agency was canceling tens of millions of dollars in grants for research on environmental hazards to children in rural America. These hazards include pesticides, wildfire smoke, and forever chemicals, and the grants supported research toward solutions to such problems. Many focused on improving child health in red states like Oklahoma. Children are much more vulnerable than adults to the health problems that can stem from exposure to toxins. That makes Trump’s policies, for all his baby-friendly chatter, seem pathologically misopedic; he is reversing bans on so-called “forever chemicals” and repealing limits set by the Biden administration on lead exposure, all of which will have devastating effects on children’s mental and physical development.And of course there’s RFK Jr.’s crazy campaign against vaccines. This week, the health secretary said he was considering removing the Covid-19 vaccine from the list of vaccines the government recommends for children, even though to win Senate confirmation, he had agreed not to alter the childhood vaccine schedule. Even worse, RFK Jr. has used his office to promote disinformation about extensively debunked links between vaccines and autism, while praising unproven “treatments” for measles as an outbreak that has afflicted more than 600 people and killed at least three continues to spread. Trump’s public health cuts are meanwhile imperiling a program that gives free vaccines to children. So far, I haven’t even mentioned children outside the United States. Trump has not only continued Biden’s policy of mass infanticide in Gaza—at least 100 children there have been killed or injured every week by Israeli forces since the dissolution of the ceasefire in March—he has vastly surpassed that shameful record by dismantling USAID. (The Supreme Court demanded that the government restore some of the funding to the already-contracted programs, but it’s unclear what the results of that ruling will be.) Children across the globe will starve to death due to this policy. The cuts to nutrition funding alone, researchers estimate, will kill some 369,000 children who could otherwise have lived. That’s not even counting all the other children’s lives imperiled by USAID funding cuts to vaccines, health services, and maternal care, or the children who will go unprotected now that Trump has cut 69 programs dedicated to tracking child labor, forced labor, and human trafficking.Natalist or exterminationist? Pro-child or rabidly infanticidal? It’s tempting to dismiss such extreme contradictions within the Trump administration as merely chaotic and incoherent. But the situation is worse than that. Trying to boost births while actively making the world less safe for children is creepy—but not in a new way. The contradiction is baked into the eugenicist tradition that Vance and Trump openly embrace. Vance said at an anti-abortion rally in January that he wanted “more babies in the United States of America.” Vance also said he wanted “more beautiful young men and women” to have children. Notice he doesn’t just say “more babies”: the qualifiers are significant. Vance was implying that he wanted the right people to have babies: American, white, able-bodied, “beautiful” people with robust genetics. Children dying because of USAID cuts aren’t part of this vision, presumably, because those children are not American or white. As for infected milk, environmental toxins, or measles—here too, it’s hard not to hear social Darwinist overtones: In a far-right eugenicist worldview, children killed by those things likely aren’t fit for survival. In a more chaotic and dangerous environment, this extremely outdated logic goes, natural selection will ensure that the strongest survive. It’s also worth noting that this way of thinking originates in—and many of these Trump administration policies aim to return us to—an earlier era, when people of all ages, but especially children, were simply poisoned by industrial pollution, unvaccinated for diseases, and unprotected from industrial accidents. In such an unsafe world for children, people had many more of them; the world was such a dangerous place to raise kids that families expected to lose a few. That all-too-recent period is the unspoken context for natalist and eugenicist visions. That’s the world Trump and Vance seem to be nostalgic for, one in which women were constantly pregnant and in labor, and children were constantly dying horrible deaths. Doesn’t that sound pleasant for everyone?

The greater Pittsburgh region is among the 25 worst metro areas in the country for air quality: Report

PITTSBURGH — The greater Pittsburgh metropolitan area is among the 25 regions in the country with the worst air pollution, according to a new report from the American Lung Association.The nonprofit public health organization’s annual “State of the Air” report uses a report card-style grading system to compare air quality in regions across the U.S. This year’s report found that 46% of Americans — 156.1 million people — are living in places that get failing grades for unhealthy levels of ozone or particulate pollution. Overall, air pollution measured by the report was worse than in previous years, with more Americans living in places with unhealthy air than in the previous 10 years the report has been published.The 13-county region spanning Pittsburgh and southwestern Pennsylvania; Weirton, West Virginia; and Steubenville, Ohio received “fail” grades for both daily and annual average particulate matter exposure for the years 2021–2023.The region ranked 16th worst for 24-hour particle pollution out of 225 metropolitan areas and 12th worst for annual particle pollution out of 208 metropolitan areas. Particulate matter pollution, which comes from things like industrial emissions, vehicle exhaust, wildfires, and wood burning, causes higher rates of asthma, decreased lung function in children, and increased hospital admissions and premature death due to heart attacks and respiratory illness. Long-term exposure to particulate matter pollution also raises the risk of lung cancer, and research suggests that in the Pittsburgh region, air pollution linked to particulate matter and other harmful substances contributes significantly to cancer rates. According to the report, the Pittsburgh metro area is home to around 50,022 children with pediatric asthma, 227,806 adults with asthma, 173,588 people with Chronic Obstructive Pulmonary Disease (COPD), 250,600 people with cardiovascular disease, 1,468 people with lung cancer, and around 25,746 pregnant people, all of whom are especially vulnerable to the harmful impacts of particulate matter pollution exposure."The findings help community members understand the ongoing risks to the health of people in our region," said Matt Mehalik, executive director of the Breathe Project and the Breathe Collaborative, a coalition of more than 30 groups in southwestern Pennsylvania that advocate for cleaner air. "These findings emphasize the need to transition away from fossil fuels — in industry, transportation and residential uses — if we are to improve our health and address climate change." Allegheny County has received a failing grade for particulate matter pollution from the American Lung Association every year since the "State of the Air" report was first issued in 2004. The region is home to numerous polluting industries, with an estimated 80% of toxic air pollutants in Allegheny County (which encompasses Pittsburgh) coming from ten industrial sites, according to an analysis by the nonprofit environmental advocacy group PennEnvironment Research & Policy Center. The Ohio River near Pittsburgh Credit: Kristina Marusic for EHN In the 2024 State of the Air report, which looked at 2020-2022, Pittsburgh was for the first time ever not among the 25 cities most polluted by particulate matte, and showed some improvements in air quality, some of which may have resulted from pollution reductions spurred by the COVID-19 shut-down in 2020.The region earned a grade D for ozone smog this year, but its ranking improved from last year — it went from the 50th worst metro area for ozone smog in 2024’s report to the 90th worst in this year’s. Ozone pollution also comes from sources like vehicle exhaust and industrial emissions, and occurs when certain chemicals mix with sunlight. Exposure to ozone pollution is linked to respiratory issues, worsened asthma symptoms, and long-term lung damage.Each year the State of the Air Report makes recommendations for improving air quality. This year those recommendations include defending funding for the U.S. Environmental Protection Agency (EPA), because sweeping staff cuts and reduction of federal funding under the Trump administration are impairing the agency’s ability to enforce clean air regulations. For example, the report notes that EPA recently lowered annual limits for fine particulate matter pollution from 12 micrograms per cubic meter to 9 micrograms per cubic meter, and that states, including Pennsylvania, have submitted their recommendations for which areas should be cleaned up. Next, the agency must review those recommendations and add its own analyses to make final decisions by February 6, 2026 about which areas need additional pollution controls. If it fails to do so due to lack of funding or staffing, the report suggests, air quality might suffer.“The bottom line is this,” the report states. “EPA staff, working in communities across the country, are doing crucial work to keep your air clean. Staff cuts are already impacting people’s health across the country. Further cuts mean more dirty air.”

PITTSBURGH — The greater Pittsburgh metropolitan area is among the 25 regions in the country with the worst air pollution, according to a new report from the American Lung Association.The nonprofit public health organization’s annual “State of the Air” report uses a report card-style grading system to compare air quality in regions across the U.S. This year’s report found that 46% of Americans — 156.1 million people — are living in places that get failing grades for unhealthy levels of ozone or particulate pollution. Overall, air pollution measured by the report was worse than in previous years, with more Americans living in places with unhealthy air than in the previous 10 years the report has been published.The 13-county region spanning Pittsburgh and southwestern Pennsylvania; Weirton, West Virginia; and Steubenville, Ohio received “fail” grades for both daily and annual average particulate matter exposure for the years 2021–2023.The region ranked 16th worst for 24-hour particle pollution out of 225 metropolitan areas and 12th worst for annual particle pollution out of 208 metropolitan areas. Particulate matter pollution, which comes from things like industrial emissions, vehicle exhaust, wildfires, and wood burning, causes higher rates of asthma, decreased lung function in children, and increased hospital admissions and premature death due to heart attacks and respiratory illness. Long-term exposure to particulate matter pollution also raises the risk of lung cancer, and research suggests that in the Pittsburgh region, air pollution linked to particulate matter and other harmful substances contributes significantly to cancer rates. According to the report, the Pittsburgh metro area is home to around 50,022 children with pediatric asthma, 227,806 adults with asthma, 173,588 people with Chronic Obstructive Pulmonary Disease (COPD), 250,600 people with cardiovascular disease, 1,468 people with lung cancer, and around 25,746 pregnant people, all of whom are especially vulnerable to the harmful impacts of particulate matter pollution exposure."The findings help community members understand the ongoing risks to the health of people in our region," said Matt Mehalik, executive director of the Breathe Project and the Breathe Collaborative, a coalition of more than 30 groups in southwestern Pennsylvania that advocate for cleaner air. "These findings emphasize the need to transition away from fossil fuels — in industry, transportation and residential uses — if we are to improve our health and address climate change." Allegheny County has received a failing grade for particulate matter pollution from the American Lung Association every year since the "State of the Air" report was first issued in 2004. The region is home to numerous polluting industries, with an estimated 80% of toxic air pollutants in Allegheny County (which encompasses Pittsburgh) coming from ten industrial sites, according to an analysis by the nonprofit environmental advocacy group PennEnvironment Research & Policy Center. The Ohio River near Pittsburgh Credit: Kristina Marusic for EHN In the 2024 State of the Air report, which looked at 2020-2022, Pittsburgh was for the first time ever not among the 25 cities most polluted by particulate matte, and showed some improvements in air quality, some of which may have resulted from pollution reductions spurred by the COVID-19 shut-down in 2020.The region earned a grade D for ozone smog this year, but its ranking improved from last year — it went from the 50th worst metro area for ozone smog in 2024’s report to the 90th worst in this year’s. Ozone pollution also comes from sources like vehicle exhaust and industrial emissions, and occurs when certain chemicals mix with sunlight. Exposure to ozone pollution is linked to respiratory issues, worsened asthma symptoms, and long-term lung damage.Each year the State of the Air Report makes recommendations for improving air quality. This year those recommendations include defending funding for the U.S. Environmental Protection Agency (EPA), because sweeping staff cuts and reduction of federal funding under the Trump administration are impairing the agency’s ability to enforce clean air regulations. For example, the report notes that EPA recently lowered annual limits for fine particulate matter pollution from 12 micrograms per cubic meter to 9 micrograms per cubic meter, and that states, including Pennsylvania, have submitted their recommendations for which areas should be cleaned up. Next, the agency must review those recommendations and add its own analyses to make final decisions by February 6, 2026 about which areas need additional pollution controls. If it fails to do so due to lack of funding or staffing, the report suggests, air quality might suffer.“The bottom line is this,” the report states. “EPA staff, working in communities across the country, are doing crucial work to keep your air clean. Staff cuts are already impacting people’s health across the country. Further cuts mean more dirty air.”

New, 'Living' Building Material Made From Fungi and Bacteria Could Pave the Way to Self-Healing Structures

Researchers are developing the biomaterial as a more environmentally friendly alternative to concrete, but any wide-scale use is still far away

New, ‘Living’ Building Material Made From Fungi and Bacteria Could Pave the Way to Self-Healing Structures Researchers are developing the biomaterial as a more environmentally friendly alternative to concrete, but any wide-scale use is still far away Microscopic images of the bacteria and mycelium scaffolds. The circles indicate the likely presence of S. pasteurii bacteria. Viles, Ethan et al., Cell Reports Physical Science 2025 Concrete is a crucial construction material. Unfortunately, however, producing it requires large amounts of energy—often powered by fossil fuels—and includes chemical reactions that release carbon dioxide. This intensive process is responsible for up to 8 percent of humanity’s carbon dioxide emissions. As such, finding more sustainable building materials is vital to lessening our global carbon footprint. And to help achieve this goal, scientists are studying methods that might replace concrete with biologically derived materials, or biomaterials for short. Now, researchers have developed a building material made of mycelium—the tubular, branching filaments found in most fungi—and bacteria cells. As detailed in a study published last week in the journal Cell Reports Physical Science, the living bacteria survived in the structure for an extended amount of time, laying the groundwork for more environmentally friendly and self-healing construction material down the line. The researchers grew mycelium from the fungus Neurospora crassa, commonly known as red bread mold, into a dense, scaffold-like structure. Then, they added Sporosarcina pasteurii bacteria. “We like these organisms for several reasons,” Chelsea Heveran, a co-author of the study and an expert in engineered living materials at Montana State University, tells the Debrief’s Ryan Whalen. “First, they do not pose very much threat to human health. S. pasteurii is a common soil microorganism and has been used for years in biomineralization research, including in field-scale commercial applications. N. crassa is a model organism in fungal research.” They also liked that both organisms are capable of biomineralization—the process that forms bones and coral by creating hardened calcium carbonate. To set off biomineralization, the team placed the scaffold in a growing medium with urea and calcium. The bacteria formed calcium carbonate quickly and effectively, making the material stronger. Importantly, the bacteria S. pasteurii was alive, or viable, for at least a month. Live organisms in building material could offer unique properties—such as the ability to self-repair or self-clean—but only as long as they’re alive. This study didn’t test those traits specifically, according to a statement, but the longer lifetime of this material “lays the groundwork for these functionalities.” “We are excited about our results,” Heveran tells New Scientist’s James Woodford. “When viability is sufficiently high, we could start really imparting lasting biological characteristics to the material that we care about, such as self-healing, sensing or environmental remediation.” This month-long lifespan marks a significant improvement over previous structures. In fact, a major challenge in the development of living biomaterials is their short viability—other similar materials made with living organisms have remained viable for just days or weeks. Plus, they don’t usually form the complex internal structures necessary in construction projects, according to the statement. In the new study, however, “we learned that fungal scaffolds are quite useful for controlling the internal architecture of the material,” Heveran explains in the statement. “We created internal geometries that looked like cortical bone, but moving forward, we could potentially construct other geometries, too.” Ultimately, the researchers developed a tough structure that could provide the basis for future sustainable building alternatives. As reported by New Atlas’ Abhimanyu Ghoshal, however, scientists still have other challenges to tackle on the path to replacing concrete—for instance, scaling the material’s production, making it usable for different types of construction projects and overcoming the higher costs associated with living biomaterials. These materials, so far, “do not have high enough strength to replace concrete in all applications,” Heveran says in the statement. “But we and others are working to improve their properties so they can see greater usage.” To that end, Aysu Kuru, a building engineer at the University of Sydney in Australia who did not participate in the study, tells New Scientist that “proposing mycelium as a scaffolding medium for living materials is a simple but powerful strategy.” Get the latest stories in your inbox every weekday.

New electronic “skin” could enable lightweight night-vision glasses

MIT engineers developed ultrathin electronic films that sense heat and other signals, and could reduce the bulk of conventional goggles and scopes.

MIT engineers have developed a technique to grow and peel ultrathin “skins” of electronic material. The method could pave the way for new classes of electronic devices, such as ultrathin wearable sensors, flexible transistors and computing elements, and highly sensitive and compact imaging devices. As a demonstration, the team fabricated a thin membrane of pyroelectric material — a class of heat-sensing material that produces an electric current in response to changes in temperature. The thinner the pyroelectric material, the better it is at sensing subtle thermal variations.With their new method, the team fabricated the thinnest pyroelectric membrane yet, measuring 10 nanometers thick, and demonstrated that the film is highly sensitive to heat and radiation across the far-infrared spectrum.The newly developed film could enable lighter, more portable, and highly accurate far-infrared (IR) sensing devices, with potential applications for night-vision eyewear and autonomous driving in foggy conditions. Current state-of-the-art far-IR sensors require bulky cooling elements. In contrast, the new pyroelectric thin film requires no cooling and is sensitive to much smaller changes in temperature. The researchers are exploring ways to incorporate the film into lighter, higher-precision night-vision glasses.“This film considerably reduces weight and cost, making it lightweight, portable, and easier to integrate,” Xinyuan Zhang, a graduate student in MIT’s Department of Materials Science and Engineering (DMSE). “For example, it could be directly worn on glasses.”The heat-sensing film could also have applications in environmental and biological sensing, as well as imaging of astrophysical phenomena that emit far-infrared radiation.What’s more, the new lift-off technique is generalizable beyond pyroelectric materials. The researchers plan to apply the method to make other ultrathin, high-performance semiconducting films.Their results are reported today in a paper appearing in the journal Nature. The study’s MIT co-authors are first author Xinyuan Zhang, Sangho Lee, Min-Kyu Song, Haihui Lan, Jun Min Suh, Jung-El Ryu, Yanjie Shao, Xudong Zheng, Ne Myo Han, and Jeehwan Kim, associate professor of mechanical engineering and of materials science and engineering, along with researchers at the University Wisconsin at Madison led by Professor Chang-Beom Eom and authors from multiple other institutions.Chemical peelKim’s group at MIT is finding new ways to make smaller, thinner, and more flexible electronics. They envision that such ultrathin computing “skins” can be incorporated into everything from smart contact lenses and wearable sensing fabrics to stretchy solar cells and bendable displays. To realize such devices, Kim and his colleagues have been experimenting with methods to grow, peel, and stack semiconducting elements, to fabricate ultrathin, multifunctional electronic thin-film membranes.One method that Kim has pioneered is “remote epitaxy” — a technique where semiconducting materials are grown on a single-crystalline substrate, with an ultrathin layer of graphene in between. The substrate’s crystal structure serves as a scaffold along which the new material can grow. The graphene acts as a nonstick layer, similar to Teflon, making it easy for researchers to peel off the new film and transfer it onto flexible and stacked electronic devices. After peeling off the new film, the underlying substrate can be reused to make additional thin films.Kim has applied remote epitaxy to fabricate thin films with various characteristics. In trying different combinations of semiconducting elements, the researchers happened to notice that a certain pyroelectric material, called PMN-PT, did not require an intermediate layer assist in order to separate from its substrate. Just by growing PMN-PT directly on a single-crystalline substrate, the researchers could then remove the grown film, with no rips or tears to its delicate lattice.“It worked surprisingly well,” Zhang says. “We found the peeled film is atomically smooth.”Lattice lift-offIn their new study, the MIT and UW Madison researchers took a closer look at the process and discovered that the key to the material’s easy-peel property was lead. As part of its chemical structure, the team, along with colleagues at the Rensselaer Polytechnic Institute, discovered that the pyroelectric film contains an orderly arrangement of lead atoms that have a large “electron affinity,” meaning that lead attracts electrons and prevents the charge carriers from traveling and connecting to another materials such as an underlying substrate. The lead acts as tiny nonstick units, allowing the material as a whole to peel away, perfectly intact.The team ran with the realization and fabricated multiple ultrathin films of PMN-PT, each about 10 nanometers thin. They peeled off pyroelectric films and transfered them onto a small chip to form an array of 100 ultrathin heat-sensing pixels, each about 60 square microns (about .006 square centimeters). They exposed the films to ever-slighter changes in temperature and found the pixels were highly sensitive to small changes across the far-infrared spectrum.The sensitivity of the pyroelectric array is comparable to that of state-of-the-art night-vision devices. These devices are currently based on photodetector materials, in which a change in temperature induces the material’s electrons to jump in energy and briefly cross an energy “band gap,” before settling back into their ground state. This electron jump serves as an electrical signal of the temperature change. However, this signal can be affected by noise in the environment, and to prevent such effects, photodetectors have to also include cooling devices that bring the instruments down to liquid nitrogen temperatures.Current night-vision goggles and scopes are heavy and bulky. With the group’s new pyroelectric-based approach, NVDs could have the same sensitivity without the cooling weight.The researchers also found that the films were sensitive beyond the range of current night-vision devices and could respond to wavelengths across the entire infrared spectrum. This suggests that the films could be incorporated into small, lightweight, and portable devices for various applications that require different infrared regions. For instance, when integrated into autonomous vehicle platforms, the films could enable cars to “see” pedestrians and vehicles in complete darkness or in foggy and rainy conditions. The film could also be used in gas sensors for real-time and on-site environmental monitoring, helping detect pollutants. In electronics, they could monitor heat changes in semiconductor chips to catch early signs of malfunctioning elements.The team says the new lift-off method can be generalized to materials that may not themselves contain lead. In those cases, the researchers suspect that they can infuse Teflon-like lead atoms into the underlying substrate to induce a similar peel-off effect. For now, the team is actively working toward incorporating the pyroelectric films into a functional night-vision system.“We envision that our ultrathin films could be made into high-performance night-vision goggles, considering its broad-spectrum infrared sensitivity at room-temperature, which allows for a lightweight design without a cooling system,” Zhang says. “To turn this into a night-vision system, a functional device array should be integrated with readout circuitry. Furthermore, testing in varied environmental conditions is essential for practical applications.”This work was supported by the U.S. Air Force Office of Scientific Research.

President of Eugene wood treatment plant gets 90-day prison term for lying to DEQ inspectors

"There has to be some accountability," U.S. District Judge Michael J. McShane said.

A federal judge Tuesday sentenced the president of Eugene’s J.H. Baxter & Co. wood treatment plant to 90 days in prison for lying about the company’s illegal handling of hazardous waste at the site.U.S. District Judge Michael J. McShane called Georgia Baxter-Krause, 62, an “absent president” who took little responsibility for what occurred.“The fact that you lied when confronted suggests you knew the practice was not ‘above board,’” McShane said. “There has to be some accountability.”He also ordered Baxter-Krause and the company to pay $1.5 million in criminal fines. The plant is now a potential cleanup site under the federal Superfund program.J.H. Baxter & Co. Inc. pleaded guilty to illegally treating hazardous waste and Baxter-Krause pleaded guilty to two counts of making false statements in violation of the Resource Conservation and Recovery Act governing hazardous waste management.The company so far has paid $850,000 of its $1 million share of the fine, and Baxter-Krause has paid $250,000 of her $500,000 share, their attorney David Angeli said.Much of the debate at the sentencing focused on whether Baxter-Krause should go to prison for lying to investigators.According to court documents, J.H. Baxter used hazardous chemicals to treat and preserve wood. Water from the process was considered hazardous waste. The company operated a legal wastewater treatment unit, but for years when there was “too much water on site,” the company essentially would “boil” off the wastewater, allowing discharge into the air through open vents, according to court records.Photograph sent to Georgia Baxter-Krause on July 8, 2019, depicting the inside of a J.H. Baxter container after weeks of boiling hazardous waste, according to federal prosecutors.U.S. Attorney's OfficeAngeli argued that the violations at the Eugene plant were “less egregious” than other criminal environmental damage cases and that “everyone” on the premises thought the hazardous waste handling was OK. He sought probation for Baxter-Krause.“Every person said she never directed or managed this activity,” Angeli said. “She was rarely even in Eugene.”But Assistant U.S. Attorney William McLaren said Baxter-Krause blatantly lied when inspectors from the Oregon Department of Environmental Quality requested information about the company’s practice of boiling off the wastewater.Baxter-Krause provided false information when questioned about the extent of the illegal activity and failed to disclose that the company kept detailed logs that tracked it, according to prosecutors.The plant illegally boiled about 600,000 gallons of wastewater on 136 days from January to October 2019, McLaren said.The government didn’t seek the maximum fine for the environmental violations, which would have been $7 million for each day a violation was found, he said. A separate civil class-action suit is pending against the company filed by people living near the West Eugene plant. They allege gross negligence that allowed “carcinogenic and poisonous chemicals’’ to be regularly released into the air and groundwater. Baxter-Krause told an investigator that the company didn’t keep records on the boiling dates and claimed it occurred only occasionally during the rainy season, records said.“Those were not minimal or immaterial slip-ups,” McLaren said. What the company was doing was “known for years on end” and it was occurring every month, he said.“Despite alerts about equipment failure and the need for capital upgrades, the evidence reflects those warnings went unheeded by J.H. Baxter’s leadership for years,” McLaren said. “And by early 2019, this illegal boiling became the company’s sole method for treating their hazardous wastewater.”Baxter-Krause, who took over the company in 2001 after her father’s death, apologized to the community around the plant and to her friends and family. She now lives in Bend but had lived in California throughout her tenure as company president and visited the Eugene facility about three times a year, according to her lawyers.“I should have been honest,” she said. “To the West Eugene community who was impacted by my careless actions, I apologize. Not a day goes by that I don’t feel remorse. I am ashamed of what I have done. I feel I have truly let you down.”She acknowledged that as president, “the buck stops with me. I should have been more proactive in fully understanding the facility’s permits, the day-to-day operations and ensuring full compliance with environmental laws.”J.H. Baxter treated wood products at the plant from 1943 to 2022. Chemicals used to treat wood, such as creosote and pentachlorophenol, also known as “penta” or PCP, have contaminated the soil and groundwater and are an ongoing concern for surrounding neighborhoods, according to the government.The chemicals remain in tanks at the site and the environmental contamination has not been addressed, according to the Environmental Protection Agency.The company has spent more than $2 million since the plant’s closure to secure the facility and work on complying with environmental regulations, but it has been unable to sell the property because of the historical contamination, according to court records.The judge said it will be up to the Federal Bureau of Prisons where to send Baxter-Krause to serve the sentence. The defense said it would request that she be placed in a community corrections setting.Baxter-Krause was ordered to surrender on July 17. She wondered aloud in the courtroom after her sentencing how she would maintain the compliance reports.Her lawyers explained that the Environmental Protection Agency is on site daily working to fully shut the property down.The EPA is still working to determine how to handle and remove chemicals from the site. It collected soil, sediment, and water samples in May 2023 from both the facility and the surrounding areas. These samples will determine the environmental and potential public health impacts of chemicals that have migrated from the site and from air pollution from its operations.-- Maxine Bernstein covers federal court and criminal justice. Reach her at 503-221-8212, mbernstein@oregonian.com, follow her on X @maxoregonian, on Bluesky @maxbernstein.bsky.social or on LinkedIn.

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