Health
Inside the Poisonous Smoke Killing Wildfire Fighters at Young Ages
Across the country, wildfire fighters work for weeks at a time in poisonous smoke.
The government says they are protected.
We tested the air at one fire to find out why they are still dying.
Across the country, wildfire fighters work for weeks at a time in poisonous smoke.
The government says they are protected.
We tested the air at one fire to find out why they are still dying.
It’s July and the Green fire is tearing through Northern California. An elite federal firefighting crew called the La Grande Hotshots has been sent to help. The 24-person crew has been working for days on the front lines, where invisible toxins hide in the thick haze.
More than 1,000 firefighters are on the fire. Several crews, including the La Grande Hotshots, are trying to contain the flames by building a trench of bare earth that will stretch from a road to a river bank. They’re doing this at night, in hopes that the cooler air will tamp down the smoke.
The crew knows that they’re risking their health.
One longtime member died last year after being diagnosed at 40 with brain cancer. A former crew leader is being treated for both leukemia and lymphoma diagnosed in his 40s. Another colleague was recently told that he has the lungs of a lifelong chainsmoker.
Wildfire fighters nationwide are getting sick and dying at young ages, The New York Times has reported. The federal government acknowledges that the job is linked to lung disease, heart damage and more than a dozen kinds of cancer.
But the U.S. Forest Service, which employs thousands of firefighters, has for decades ignored recommendations from its own scientists to monitor the conditions at the fire line and limit shifts when the air becomes unsafe.
To find out how harmful the air gets on an average-size wildfire, Times reporters brought sensors to the Green fire this summer. We tracked levels of some of the most lethal particles in the air, called PM2.5, which are so tiny that they can enter the bloodstream and cause lasting damage.
Readings above 225.5 micrograms per cubic meter are considered hazardous. On the fire line, levels regularly exceeded 500.
The fire began on July 1 after a lightning storm passed over the Shasta-Trinity National Forest.
By July 16, much of the area was shrouded in smoke.
Around 6 p.m., the La Grande Hotshots started their shift and set off toward the fire line.
Capt. Nick Schramm, a crew leader, assumed the air was reasonably safe. He has done this work for nearly two decades, and like most firefighters, he often has coughing fits after long shifts. But he believes that exposure to hazardous air is unavoidable.
“That’s just the harsh truth,” he said later.
As climate change makes fire seasons worse, several states have tried to shield outdoor workers from wildfire smoke, which can contain poisons like arsenic, benzene and lead. California now requires employers to monitor air quality during fires, and to provide breaks and masks when the air turns unhealthy.
But these rules don’t apply on the wildfires themselves, because state agencies and private companies successfully argued that those constraints would get in the way of fighting fires.
Until recently, federal firefighters weren’t even allowed to wear masks on the job. Masks are now provided, but they are still banned during the most arduous work, closest to the fire. The Forest Service says face coverings could cause heatstroke, though wildland firefighters in other countries regularly use masks without this problem.
As crews descended the ridge toward the fire line, the levels of toxic particles nearly doubled.
Firefighters say that during their shifts they worry more about immediate dangers — falling trees, burns, sharp tools — than about smoke exposure. As the La Grande crew hiked down the steep terrain, Lily Barnes, a squad leader, concentrated on keeping her footing.
Back home in the off-season, she sometimes wonders what the smoke is doing to her body, she said in an interview. “Maybe I’ll realize one day I shouldn’t have been doing this work.”
The handbook issued to Forest Service crews has 10 words of guidance for smoke exposure on the fire line: “If needed, rotate resources in and out of smoky areas.” The agency declined to comment for this story, but in the past has told The Times that while exposure cannot be completely eliminated, rotating crews helps limit risk.
In practice, according to interviews with hundreds of firefighters, workers feel as though they are sent into smoke and then forgotten. Over months of reporting, Times journalists never saw a boss pull a crew back because of exposure.
Even experienced supervisors can’t tell exactly how unhealthy the air is just by looking.
Chuy Elguezabal, the La Grande superintendent, says he pulls his crews out of smoke when it becomes impossible for them to work — when they cannot see or breathe, or they are overcome by headaches and coughing fits.
On the Green fire, he said, the smoke seemed like more of an inconvenience, like the 105-degree daytime heat or the poison oak that had given many of the firefighters weeping sores.
Since the 1990s, Forest Service researchers have suggested giving crews wearable air sensors, but the agency hasn’t done it. Other dangerous workplaces, like coal mines, have long been required to monitor airborne hazards.
On the Green fire, The Times used a device that weighs as much as a deck of cards and costs about $200.
Last year, firefighters wore the same devices during a small federal research project to measure their exposure. For hours, those readings stayed at 1,000 — as high as the monitors go — according to Zach Kiehl, a consultant who worked on the project.
Mr. Kiehl said that ideally, crews would be issued monitors to know when to put on masks or pull back from a smoky area. “You can pay now and prevent future cases, or pay out later when a person is losing a husband or a father,” he said.
The firefighters believe that the decision to work at night has paid off: The smoke occasionally got thick, but didn’t seem bad compared with other fires they have worked. They think the exposure was fleeting.
In fact, the monitors show, the air was never safe.
Methodology
To measure particulate concentrations at the Green fire, The Times followed U.S. Forest Service crews and carried two Atmotube PRO sensors. These portable, inexpensive monitors are the same as those the Forest Service has tested in the field.
We consulted with Dr. Aishah Shittu, an environmental health scientist, and Dr. Jim McQuaid, an atmospheric scientist, both from the University of Leeds. They are co-authors of a study showing that Atmotube Pro sensors demonstrated good performance for measuring fine particulate matter concentrations despite being a fraction of the size of reference-grade models. We also developed our approach in consultation with experts from the Interior Department and the Forest Service.
On the Green fire, the sensors recorded minute-by-minute averages of airborne particles that are 2.5 micrometers in diameter or smaller. The Times then matched these readings with timestamps and locations from a satellite-enabled GPS watch.
Generally, the harm associated with PM2.5 levels is calculated based on a 24-hour average. Here, for near-real-time monitoring on the fire line, we followed the guidance of Drs. Shittu and McQuaid by first averaging the readings from the two sensors and then calculating a 15-minute rolling average.
Using those figures, we categorized the health risks of PM2.5 exposure according to standards set by the U.S. Environmental Protection Agency. We used standards meant for the public because there are no federal occupational standards for wildfire smoke exposure.
After averaging, our data had a correlation coefficient of 0.98 and a mean coefficient of variation between the two sensors of 7.5 percent. The E.P.A. recommends that PM2.5 air measurements have a correlation coefficient of at least 0.7 and a mean coefficient of variation less than 30 percent. Our correlation and variance measures gave us confidence that the sensors were largely in agreement.
The 3-D base map in this article uses Google’s Photorealistic 3D Tiles, which draw from the following sources to create the tiles: Google; Airbus; Landsat / Copernicus; Data SIO, NOAA, U.S. Navy, NGA, GEBCO; IBCAO.
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Along a bustling sidewalk in Boston, a bright yellow payphone invites folks to “call a Boomer.”
Almost 3,000 miles away in Reno, Nevada, a nearly identical phone prompts residents of Sierra Manor – an apartment complex for seniors – to “Call a Zoomer.” The goal is simple: to get strangers to talk to each other.
The project, often referred to as simply “Call a Boomer,” is the latest initiative from Matter Neuroscience, a New York-based company dedicated to mapping the “biomarkers of happiness.”
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By connecting “two of the loneliest demographics” (older adults and younger adults), the project aims to prove that on a molecular level, “humans need one another in order to be happy,” according to Calla Kessler, a social strategist at Matter Neuroscience.
Along a bustling sidewalk in Boston, a bright yellow payphone invites folks to “Call a Boomer.” (Matter Neuroscience)
“Younger adults and older adults tend to experience the highest levels of loneliness of any age group,” the company wrote on its website. “So the goal of this project is to inspire generational connection through meaningful conversations, despite differences in age, lifestyle or politics.”
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The hope, according to Kessler, is that the calls will shift the brain’s focus from stress to bonding.
“Our neuroscience angle is cannabinoids over cortisol,” Kessler told Fox News Digital. “Cannabinoids are the feel-good neurotransmitter in our brain that creates that warm feeling with a friendship — and when you activate cannabinoids, you’re counteracting the negative effects of cortisol, which is our primary stress hormone.”
“Younger adults and older adults tend to experience the highest levels of loneliness of any age group,” the company noted. (Matter Neuroscience)
This isn’t Matter’s first round of payphones. Its initial experiment connected one of the most liberal cities in the U.S. (San Francisco) with one of the most conservative (Abilene, Texas).
“We basically just wanted people to find common ground and encourage people to think beyond labels,” Kessler said.
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She noted that the negative results were “almost negligible,” with most participants enjoying their time speaking to different people.
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Now, the focus has shifted from political labels to generational divides.
The negative results have beem “almost negligible,” with most participants enjoying their time speaking to different people. (Matter Neuroscience)
As the “Call a Boomer” experiment continues, the team is busy collecting audio files of these intergenerational chats to prove that simple connections with other humans can help improve mental health.
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“Our research is essentially trying to find a non-pharmaceutical cure to depression,” Kessler added.
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Looking ahead, she said, “we’ll definitely be doing fun things that we hope get people’s attention and inspire them to learn a little more about themselves.”
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A New York City father is desperately seeking a donor to save his teenage son’s life.
Max Uribe, now 15 and a high-school freshman, has just weeks until he will need to be hospitalized with a rare blood disorder that could lead to a deadly cancer.
“Max was just 6 when we first noticed there was something wrong with his blood counts,” his father, Juan Uribe, told Fox News Digital. “At the time, we thought it was due to a viral infection, but they never fully recovered back to their normal level.”
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In December 2024, Max’s condition grew worse, and he was diagnosed with clonal cytopenia, a condition involving the blood and bone marrow.
“All three of his blood counts are low — red, white and platelets,” Uribe said.
Max Uribe, pictured with his parents and sister, is in urgent need of a stem cell transplant to save his life. (Uribe Family)
In August 2025, another bone marrow biopsy revealed that Max is on a path to bone marrow failure, creating an urgent need for a stem cell transplant.
“The disease has continued to progress, as his blood counts continue to drop, and therefore, we have to take him to transplant in May of this year,” Uribe said.
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If left untreated, Max’s condition could lead to MDS (myelodysplastic syndrome), a type of blood cancer, and from there possibly into acute myeloid leukemia (AML).
A bone marrow match must have a specific type of HLA (human leukocyte antigen), which are proteins found on the surface of most cells in the body, according to the National Marrow Donor Program (NMDP).
Max Uribe, pictured with his parents, will be hospitalized for a transplant in May, as his blood count has been steadily decreasing. (Uribe Family)
The closer the donor’s HLA markers are to the patient’s, the more likely the body will accept the new cells without a high risk of complications.
People from the same ethnic background are more likely to share similar HLA types, meaning a patient is most likely to find a compatible donor among individuals with similar ancestry, per the NMDP.
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Non-Hispanic White patients have a 79% chance of a perfect match. That drops to 49% for Hispanic/Latino patients, 29% for Black patients and even lower for mixed ancestries, the NMDP reports.
Because Max is a “very rare combination” of half-Colombian from his father and a mix of Italian, British and German from his mother, his path to a perfect match is proving much more difficult, Uribe noted.
“For a kid like Max, with complex, mixed heritage, the math is devastating.”
“For a kid like Max, with complex, mixed heritage, the math is devastating,” he said. “The thinking is, we need large numbers if we’re going to have that perfect match for my son.”
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Max, who participates in competitive tennis and varsity wrestling, just had additional blood work done on Friday, which revealed that his counts continue to plummet.
“We’re at the point where this is beginning to manifest a bit more, which is why the urgency is so critical,” Uribe said.
Because Max is a “very rare combination” of half-Colombian from his father and a mix of Italian, British and German from his mother, his path to a perfect match is proving much more difficult. (Uribe Family)
If a donor is not secured by Max’s hospitalization in May, the medical team will have to proceed with a partial match, which is not ideal for a number of reasons.
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“The survival rate is meaningfully lower with a partial match, and there’s more risk of graft versus host disease (GVHD), which could lead to complications in the process,” Uribe said. With GVHD, the donor cells begin to attack the body.
Max Uribe, an active athlete, is on a path to bone marrow failure, requiring a stem cell transplant. (Uribe Family)
To help prevent this with a partial match, Max would likely need chemotherapy and immunosuppressants for a longer period of time, which could weaken his immune system.
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Anyone interested in donating can order a free test kit on the Team Max website. The kit includes a quick cheek swab that is sent back to the lab to determine whether someone is a match.
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