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Previous scientific research shows that the detritus left behind after a fire can be laden with toxic compounds and gases, from heavy metals to burned plastics to asbestos.
Why it matters: Exposure to the ash and even air can cause short-term health impacts, from the runny eyes Ronaghi experienced to respiratory issues and mor
Keep reading ... for tips on how to protect yourself while cleaning up after the fires.
Reza Ronaghi lost his home in the Los Angeles wildfires last week.
"Not a single house survived in our two-block area," he said.
Ronaghi is a pulmonologist at the University of California, Los Angeles. So he is well-acquainted with the health risks associated with breathing in wildfire smoke. But even he, a medical professional, was shocked to see how many potential health risks lurked in the detritus, ash, and smoke left behind after the fires.
"This is not just a regular fire," he said. The ash contains material from "thousands of houses and all the material the house was made of, the inside, the appliances, the roof, the list goes on."
But what alarmed him more was how little health and safety guidance officials offered to residents returning to the neighborhood to see what was left of their homes.
He and several neighbors were allowed back into their Pacific Palisades neighborhood a few days after the burn; the ground was still smoking. He wore an N95 mask, but quickly realized he should have more thoroughly protected himself — with gloves, goggles, a respirator mask like those used when working with chemicals, and long clothes that he could remove and bag immediately after leaving the area.
After just 20 or 30 minutes, he said, his eyes were watering and his nose was irritated. Later on, he realized his skin was irritated where it had accidentally been exposed.
Previous scientific research shows that the detritus left behind after a fire can be laden with toxic compounds and gases, from heavy metals to burned plastics to asbestos. Exposure to the ash and even air can cause short-term health impacts, from the runny eyes Ronaghi experienced to respiratory issues and more.
But it's not just the immediate health issues that concern Ronaghi. The exposure people experience now, he worries, could lead to health effects down the road.
Exposure to toxic materials left behind after houses burn can be "actually much more dangerous than what smoke may do to your lungs alone," he said.
So as people return to their homes, he wants them to take care — because "right now, we're talking about long-term consequences."
It matters what materials have burned
Wildfire smoke and ash can be dangerous to people's health even when a fire burns primarily trees and plants. But fires that burn through man-made materials are often filled with a more toxic mix. After California's 2018 Camp Fire, researchers found abnormally high concentrations of lead downwind of the burn, which they suspect came from the houses that went up in smoke. Researchers in Los Angeles have found preliminary suggestions that the ash there has high concentrations of metals, as well. Exposure to lead can lead to short-term problems like headaches or dizziness. High exposures have been associated with issues from cognitive trouble to reproductive and cardiovascular problems.
It's not just metals. Appliances, coolant fluid, polyester curtains, cleaning products — all the manmade parts of a house can produce a rich suite of health-harming compounds and gases, like benzene and formaldehyde, and polycyclic aromatic hydrocarbons, or PAHs.
But research on the long-term effects of wildfire smoke has only recently begun.
Surveys after the Lahaina wildfires in 2023 found that residents exposed to smoke and ash experienced increases in heart, kidney, and mental health issues. An EPA-led study exposed mice to smoke from army burn pits, which include many materials that might be found in burning homes and cars; the mice exposed to the smoke showed signs of inflammation and lung injury.
In the most damaged and contaminated areas, officials will usually send in debris-removal teams to clear away the most dangerous waste and ash. But Ronaghi stressed that anyone visiting the area before that process is complete should take precautions.
He recommends anyone visiting burn sites use N95 masks or respirators, if possible, along with goggles to protect their eyes (ski or swim goggles would work in a pinch, he says); gloves; and long clothes that they can remove before returning to wherever they're staying. Bag those clothes during transport, and wash them immediately upon arriving home, other experts suggest, to avoid bringing hazards into your living space.
Even those whose homes are still standing, including those far from the front lines of the fire, may be contending with ash and smoke. Research conducted after the 2021 Marshall Fire in Boulder, Colo., found that "smoke managed to penetrate indoors and through cracks underneath doors and windows," in homes downwind of the fire, said Joost de Gouw, a University of Colorado, Boulder atmospheric chemist and author of one of the studies. Residents reported health disturbances, from headaches to respiratory problems, for weeks afterward.
Hazardous gases associated with the wildfire smoke, such as benzene and naphthalene, could be detected in homes downwind of the Marshall Fire long after the burns were put out. Those gases, another study suggested, could have been absorbed by textiles, mattresses, and maybe even the wood framing and drywall in homes.
Those gases take time to dissipate, de Gouw said, during which period residents may still be exposed.
After the fire, "all of these gases that were absorbed into building materials were slowly being rereleased through indoor air, where you were smelling them," he said. "That process took about five weeks before everything ventilated out again."
How to clean up
Even for those farther from the burned neighborhoods, the cleanup could be dangerous — and could stretch over weeks.
Because the leftover ash and smoke can contain dangerous components, experts who spoke with NPR recommend protecting yourself thoroughly whenever you clean your home if it was affected by wildfire smoke.
"People who are going back to these homes should wear N95 masks to protect themselves," said Colleen Reid, a health geographer at the University of Colorado, Boulder, who worked on one of the Marshall Fire smoke studies. "We found that when people cleaned, it resuspended that ash," lifting it back into the air where people might inhale it.
Reid also suggests wearing gloves and long-sleeved clothes and pants while cleaning.
She said scientists are still working on coming up with rigorously tested recommendations for best cleaning practices after wildfires. But a 2023 study shows that cleaning a home's hard surfaces by dusting, wiping down with damp cloths, and mopping can effectively lower the concentrations of smoke-associated gases.
Reid suggests "using a HEPA-filter vacuum, and really cleaning all the surfaces — like wiping them down to try to remove those sources of the chemicals that are off-gassing."
More porous surfaces, like couches and other textiles, can persist as an ongoing source of exposure; Reid suggests replacing them, if possible.
de Gouw and other researchers found that constantly running air filters with activated carbon lowered the gas concentrations in those first weeks after the fire. But concentrations went back up when the air filters were stopped — so "it's important to keep them running for those few weeks," he said.
Research from Portland State University found that PAH levels can be lowered post-fire by simple cleaning and washing any textiles that can be washed. Long-term exposure to PAH's has been linked to increased risk of cancer.
The message, said de Gouw, is to clean everything one can carefully and thoroughly, because the smoke can affect nearly every part of a home — even in houses far from the fire line. Any efforts to lower the dose of potentially dangerous smoke and ash byproducts can help protect people, he said.
Ronaghi is still dealing with the fallout of the fires. For now, his family is dealing with the loss of their home and figuring out how, and where, to rebuild their life.
But as he processes, he wants to make sure others understand the ongoing risks.
"Most of the time we hear about fires and we say, okay, you know, we'll be okay. We're kind of removed from it," he said.
But for people across Los Angeles, it's all too possible to be exposed to health-damaging toxins right now: "And you won't know for a very, very, very long time," he said. "That's why it's super important" to protect yourself.
Copyright 2025 NPR
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The Garfield Bulldogs defeated the Roosevelt Rough Riders 28-24 at the 91st East LA Classic.
Why it matters: The event drew crowds in red and gold, blue and white, all there to cheer on their team and claim Eastside bragging rights.
Check out ... some of the night’s best moments. The fans in the stands. The players on the gridiron. The Friday night lights.
The fans in the stands. The players on the gridiron. The Friday night lights.
Those were just some of the scenes inside Weingart Stadium, where the Garfield Bulldogs defeated the Roosevelt Rough Riders 28-24 at the 91st East LA Classic.
The event drew crowds in red and gold, blue and white, all there to cheer on their team and claim Eastside bragging rights.
Here are some of the night’s best moments.
The post The best moments from the 91st East LA Classic appeared first on LA Local.
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The L.A. County District Attorney’s office dropped its felony body armor charges against Michael Angel Alvarez earlier this week. Alvarez was sentenced to time served on a lesser charge — a probation violation. He served more than 100 days in jail earlier this year while awaiting trial.
Most serious claims haven’t materialized: Though federal prosecutors made headlines claiming in court documents and on social media that Alvarez was “leading a violent street gang, while claiming to be a gang interventionist for the City,” they have not filed charges related to those claims.
The Los Angeles County District Attorney’s Office dropped its felony body armor charges against Michael Angel Alvarez on Wednesday. Alvarez was sentenced to time served on a lesser charge — a probation violation. He had served more than 100 days in jail earlier this year while awaiting trial.
Why Alvarez’s arrest made headlines: Alvarez was working as a city-contracted peace ambassador in MacArthur Park when he was arrested by federal agents in May. Federal and county prosecutors each brought felony charges against him, claiming he was in possession of body armor as a violent felon.
Bill Essayli, who leads the U.S. Attorney’s office in L.A., pointed to the case on social media to criticize city officials for allowing taxpayer money to be “shelled out to a convicted gang murderer.”
About his criminal record: Judges in federal and state court have now dismissed prosecutors’ felony charges against Alvarez, after U.S. District Judge Anne Hwang found on Sept. 9 that Alvarez did not have a violent felony conviction. Alvarez was 15 when he committed a gang-related murder. He was tried and convicted as an adult in 2002. After a change in state law increased the age at which minors could be sentenced as adults to 16, Alvarez’s case was sent back to juvenile court, and he was released in 2024. At that point, he had served more than 20 years.
Most serious claims haven’t materialized: Though federal prosecutors made headlines claiming in court documents that Alvarez was “leading a violent street gang, while claiming to be a gang interventionist for the City,” they have not filed charges related to those claims.
A federal judge ruled Tuesday, Oct. 7 that Republican Bill Essayli is not legally serving as the top U.S. prosecutor in Los Angeles.
The ruling is the latest roadblock to the Trump administration’s effort to extend handpicked acting U.S. attorneys beyond the 120-day limit set by federal law. The strategy was designed to bypass confirmation by the U.S. Senate — something that generally requires a degree of bipartisan support.
Essayli “is unlawfully serving as a ‘de facto’ United States Attorney,” U.S. District Judge J. Michael Seabright wrote.
The order won’t take effect until the court rules on the government’s motion for a stay pending appeal. Essayli said he doesn’t agree with the court’s order. He said the president and Attorney General “have every right to select supervisors within the Justice Department.”
— Associated Press
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An all-ages play about the life of Dolores Huerta and other under-told stories of the farmworker labor movement is back on tour in Los Angeles.
The backstory:
Center Theatre Group commissioned ¡Sí Se Puede! from Eliana Pipes in March 2025 and it debuted in L.A. this spring. “There's this perception that farm work was only done by men,” Pipes said. “There were women on the fields, there were women on the picket lines, and there were women in leadership in the United Farm Workers movement.”
What's next: ¡Sí Se Puede!’s upcoming free shows are:
An all-ages play about the life of Dolores Huerta and other under-told stories of the farmworker labor movement is back on tour in Los Angeles.
The show's extension had been announced prior to the news that Huerta died Wednesday, Oct. 28., at her Bakersfield home. She was 96 years old.
“There's this perception that farm work was only done by men,” said playwright Eliana Pipes. “There were women on the fields, there were women on the picket lines, and there were women in leadership in the United Farm Workers movement.”
Center Theatre Group commissioned ¡Sí Se Puede! from Pipes in March 2025 and it debuted in L.A. this spring.
The next free, family-friendly shows are:
Topline
There’s a whole world of underground Southern California music history that’s hidden in storage boxes — photos, fliers, cassettes and other memorabilia. Research librarians at the California State University, Los Angeles are holding a community archive event on Nov. 5 to ensure the cultural memory of L.A.’s underground music scenes are preserved for future generations.
Why it matters: The memorabilia are the physical remnants of the supportive L.A. communities built around music and enjoyment. But many of these objects languish out of sight, and run the risk of being lost, along with the memories attached to them.
Why now: For four years, archive staff have held an annual day to receive ephemera from the public. They're doing it again on Thursday, Nov. 5.
Read on… to hear how goth, rockabilly and other underground clubs in L.A. inspired the head archivist.
Right around the year 2000, there was a club night in Hollywood called Clockwork Orange. Fans of The Smiths, Depeche Mode, Bauhaus and other bands came for the DJ’s mix of their favorite songs but also for a vibe that welcomed people regardless of race, ethnicity or sexual and gender identity.
“I was a pretty shy person, and so that was a place where I could sort of be myself and express myself,” said Azalea Camacho, a regular there in those days.
She had just graduated from Workman High School in the City of Industry and was also clubbing at rockabilly music nights in Rosemead and goth club nights in downtown L.A.
Camacho said there was lots of memorabilia from those times, such as photos taken in and outside the clubs, ticket stubs and promotional fliers. They're the physical remnants of those supportive communities built around music and enjoyment, but many of them languish in shoeboxes and storage units, at risk of being lost — along with the memories attached to them.
“I think the danger is maybe those stories are not being told, or people don't know about the story,” she said.
More than two decades later, Camacho is now in a position to make sure those stories are kept alive. She’s head of special collections and archives at the university library at California State University, Los Angeles.
Four years ago, she and library staff created an annual day for area residents to donate or digitize memorabilia for their Sounds of the Underground Archive. This year it's on Thursday, Nov. 5. They’ll accept physical donations, but they’ll also have a scanner to digitize printed material, so people can keep items that are precious to them.
Date: Thursday, Nov. 5
Time: 2 p.m. – 5 p.m.
Location: Cal State LA Library Community Room, 5151 State University Drive, Los Angeles
Camacho is hoping this year will bring in a bumper amount of memorabilia. It's taken time to get the word out, she said.
“From the actual community archiving day [we’ve collected] maybe 100 or less than 100 items. … It's not a lot,” she said.
She said they're on the lookout for a wide range of mementos, including:
