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Far From the Fires, the Deadly Risks of Smoke Are Intensifying

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Far From the Fires, the Deadly Risks of Smoke Are Intensifying

It kills more people each year than car crashes, war or drugs do. This invisible killer is the air pollution from sources like cars and trucks or factory smokestacks.

But as wildfires intensify and grow more frequent in a warming world, the smoke from these fires is emerging as a new and deadly pollution source, health experts say. By some estimates, wildfire smoke — which contains a mixture of hazardous air pollutants like particulate matter, nitrogen dioxide, ozone and lead — already causes as many as 675,000 premature deaths a year worldwide, as well as a range of respiratory, heart and other diseases.

Research shows that wildfire smoke is starting to erode the world’s progress in cleaning up pollution from tailpipes and smokestacks, as climate change supercharges fires.

“It’s heartbreaking, it really is,” said Dr. Afif El-Hasan, a pediatrician who specializes in asthma care at Kaiser Permanente in Southern California and a board director of the American Lung Association. Wildfires “are putting our homes in danger, but they’re also putting our health in danger,” Dr. El-Hasan said, “and it’s only going to get worse.”

Those health concerns were coming to the fore this week as wildfires ravaged the Los Angeles area. Residents began to return to their neighborhoods, many strewed with smoldering ash and rubble, to survey the damage. Air pollution levels remained high in many parts of the city, including in northwest coastal Los Angeles, where the air quality index climbed to “dangerous” levels.

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Los Angeles, in particular, has seen air pollution at levels that could be raising daily mortality by between 5 to 15 percent, said Carlos F. Gold, an expert in the health effects of air pollution at the University of California, San Diego.

That means current death counts, “while tragic, are likely large underestimates,” he said. People with underlying health issues, as well as older people and children, are particularly vulnerable.

The rapid spread of this week’s fires into dense neighborhoods, where they burned homes, furniture, cars, electronics and materials like paint and plastic, made the smoke more dangerous, said Dr. Lisa Patel, a pediatrician in the San Francisco Bay Area and the executive director of the Medical Society Consortium on Climate and Health.

A recent study found that even for homes that are spared destruction, smoke and ash blown inside could adhere to rugs, sofas and drywall, creating health hazards that can linger for months. “We’re breathing in this toxic brew of volatile organic compounds and polycyclic aromatic hydrocarbons and hexavalent chromium,” Dr. Patel said. “All of it is noxious.”

Intensifying and more frequent fires, meanwhile, are upending experts’ understanding of smoke’s health effects. “Wildfire season is no longer a season,” said Colleen Reid, who researches the effects of air pollution from wildfires on heath at the University of Colorado Boulder. “We have fires all year round that affect the same population repeatedly.”

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“The health impacts are not the same as if you were exposed once, and then not again for 10 years,” she said. “The effects of that is something that we still don’t really know.”

A United Nations report from 2022 concluded that the risk of devastating wildfires around the world would surge in coming decades. Heating and drying caused by climate change, along with development in places vulnerable to fire, was expected to intensify a “global wildfire crisis,” the report said. Both the frequency and intensity of extreme wildfires have more than doubled in the past two decades. In the United States, the average acreage burned a year has surged since the 1990s.

Now, pollution from wildfires is reversing what had been a decades-long improvement in air quality brought about by cleaner cars and power generation. Since at least 2016, in nearly three-quarters of states in the U.S. mainland, wildfire smoke has eroded about 25 percent of progress in reducing concentrations of a type of particulate matter called PM 2.5, a Nature study in 2023 found.

In California, wildfire smoke’s effect on air quality is offsetting public health gains brought about by a decline in air pollution from automobiles and factories, state health officials have found. (By releasing carbon dioxide and other planet-warming gases into the atmosphere, wildfires are themselves a big contributor to climate change: The wildfires that ravaged Canada’s boreal forests in 2023 produced more greenhouse gases than the burning of fossil fuels in all but three countries.)

”It’s not a pretty picture,” said Dr. Gold of U.C. San Diego, who took part in the Nature study. If planet-warming gas emissions continue at current levels, “we’ve got some work that suggests that mortality from wildfire smoke in the U.S. could go up by 50 percent,” he said.

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One silver lining is that the Santa Ana winds that so ferociously fueled the flames in recent days have been blowing some of the smoke toward the ocean. That stands in contrast to the smoke from the 2023 Canadian wildfires that drifted to New York and other American states hundreds of miles away, causing spikes in emergency room visits for asthma.

At one point that year, more than a third of Americans, from the East Coast to the Midwest, were under air quality alerts from Canadian wildfire smoke. “We’re seeing new and worsening threats in places that are not used to them,” Dr. Patel, the pediatrician, said.

The new normal is bringing about changes to health care, Dr. Patel said. More health systems are sending out air quality alerts to vulnerable patients. In the small community hospital where she works, “every child that comes in with wheezing or asthma, I talk to them about how air pollution is getting worse because of wildfires and climate change,” she said.

“I teach them how to look up air quality, and say they should ask for an air purifier,” Dr. Patel added. She also cautions that children should not participate in cleanup after a wildfire.

Scientists are still trying to understand the full range of wildfire smoke’s health effects. One big question is how much of what researchers know about vehicle exhaust and other forms of air pollution apply to wildfire smoke, said Mark R. Miller, a researcher at the Center for Cardiovascular Science at the University of Edinburgh who led a recent global survey of climate change, air pollution and wildfires.

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For example, exhaust particles “are so small that when we breathe them in, they go deep down into our lungs and are actually small enough that they can pass from our lungs into our blood,” he said. “And once they’re in our blood, they can be carried around our body and start to build up.”

That means air pollution affects our entire body, he said. “It has effects on people who have diabetes, has effects on the liver and the kidney, it has effects on the brain, on pregnancy,” he said. What’s still not clear is whether pollution from wildfires has all of those same effects. “But it’s likely,” he said.

Experts have a range of advice for people living in areas with smoke. Keep an eye on air quality alerts, and follow evacuation orders. Stay indoors as much as possible, and use air purifiers. When venturing outside, wear N95 masks. Don’t do strenuous exercise in bad air. Keep children, older people and other vulnerable groups away from the worst smoke.

Ultimately, tackling climate change and cutting back on all kinds of air pollution is the way to reduce the overall burden on health, said Dr. El-Hasan of the American Lung Association. “Can you imagine how much worse things would be if we hadn’t started cleaning up emissions from our cars?” he said. “I’m trying to think, glass half full, but it does break my heart and it does worry me.”

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National suicide prevention hotline plans to stop offering LGBTQ+ youth counseling. Queer advocates in L.A. wonder what's next

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National suicide prevention hotline plans to stop offering LGBTQ+ youth counseling. Queer advocates in L.A. wonder what's next

Amy Kane was filled with dread when she heard that the national suicide prevention lifeline would stop offering specialized crisis intervention to young LGBTQ+ Americans and end its partnership with the West Hollywood-based Trevor Project.

With the service set to end July 17, Kane, a therapist who identifies as lesbian, believes the Trump administration is sending a clear message to queer Americans: “We don’t care whether you live or die.”

Since it launched in 2022, more than 1.3 million queer young Americans struggling with a mental health crisis have dialed the 988 Suicide and Crisis Lifeline, which gave them the option to press “3” to connect with a specialist trained to address their unique life experiences. As the largest of seven LGBTQ+ contractors, the Trevor Project alone handles about half of all volume from queer callers to the 988 line.

The government’s decision is yet another broadside from an administration whose actions have left queer public health advocates and providers reeling, including at the Los Angeles LGBTQ Center, where Kane serves as director of mental health services.

Under pressure from the Trump administration, Children’s Hospital Los Angeles sent letters to families in early June saying it planned to suspend its healthcare program for transgender children and young adults in late July. The LGBTQ Center and other groups have demanded that the hospital reconsider.

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Around the same time came the news about the 988 line and the Trevor Project, a nonprofit founded in 1998 by the makers of the Academy Award-winning short film “Trevor” — about a teen who attempts suicide — to address the absence of a major prevention network tailored to the needs of queer youth.

“So much has been thrown our way in the last five months,” Kane said. “It’s across the board. It’s not just mental health. We see what’s happening with gender-affirming care, dramatic cuts in research for HIV and STIs. … What’s next?”

Given L.A.’s status as a haven for LGBTQ+ people — the first permitted Pride parade took place in Hollywood in 1970 — Kane wonders whether the recent moves are an attempt to intimidate and punish Californians for being so welcoming.

Terra Russell-Slavin, left, denounced cuts to LGBT health funding as public health care becoming political as Rep. Laura Friedman, center, and Craig Thompson, CEO of the David Geffen Health Center look on at the APLA Health, Michael Gottlieb Health Center in West Hollywood last month.

(Myung J. Chun / Los Angeles Times)

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The threats aren’t just coming from Washington. Kane said that she and other leaders had to lobby state legislators recently to preserve funding for a queer women’s preventive-healthcare program offered through the L.A. LGBTQ Center that was to be revoked due to a state budget shortfall. For now, the program has been given a temporary reprieve.

“It used to be this idea of, ‘Oh yeah, that’s in the red states, but I’m safe in California’ — it doesn’t feel that way anymore,” Kane said.

Staff members at the Trevor Project are scrambling to figure out how to save the jobs of about 200 counselors who are paid through the federal contract, including raising private funds to make up for the unexpected shortfall, said Mark Henson, interim vice president of advocacy and government affairs. The news couldn’t come at a worse time, given that calls nationwide are on pace to top 700,000 in 2025. That’s up from 600,000 in 2024, a spokesperson said, citing metrics from the U.S. Substance Abuse and Mental Health Services Administration.

Another 100 crisis counselors are employed and paid separately by the Trevor Project itself. They will continue taking calls through the project’s own 24/7, free crisis line, one of several options that local LGBTQ+ organizations offer. Los Angeles County’s Alternative Crisis Response has a 24/7 helpline at (800) 854-7771 that also provides culturally sensitive support services.

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But Alex Boyd, the Trevor Project’s director of crisis intervention, said he isn’t sure how his organization can make up for the loss of the nationwide visibility and federal support that the 988 partnership affords them.

LGBTQ+ young people are more than four times as likely to attempt suicide than their peers, according to the Trevor Project. Its 2024 survey found that in California, 35% of LGBTQ+ young people seriously considered taking their own lives and that 11% of respondents had attempted suicide in the previous year.

In defending the decision to stop working with the Trevor Project at a House budget hearing in May, Health and Human Services Secretary Robert F. Kennedy Jr. said that while Trump supports the 988 Suicide & Crisis Lifeline in general, “We don’t want to isolate different demographics and polarize our country.”

The big question, Boyd said, is will young LGBTQ+ Americans who already feel shunned or misunderstood still trust a suicide prevention line that no longer offers counselors they can easily relate to?

A one-size-fits-all approach doesn’t work when it comes to people in emotional and mental distress, Boyd said.

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He fears the worst.

“The fact that such a significant amount of our capacity for impact has now been stripped away — there is no operational way in order to navigate through a moment like this that doesn’t result, in at least the short term, in a loss of life.”

Counselors at the Trevor Project hear the anguish over the anti-LGBTQ+ backlash in the voices of young callers seeking help through the lifeline, Boyd said. “The statements we are hearing are: ‘Our government doesn’t support me. The government is actively erasing my experience from the national conversation.’ ”

“Increasingly, the biggest thread that we see from young people reaching out to us is this idea that it is already difficult to be a young person in the world — this is another layer that we’re adding onto children’s lives,” Boyd said. “They’re coming to us saying they’re not sure how they’re going to be able to navigate through more years of this before they get some level of autonomy and agency and find some sense of safety.”

Along with a host of executive actions signed by the president, thousands of bills targeting the LGBTQ+ community have been introduced in state legislatures, in cities and in school districts in California and around the country, including calls to ban books that mention same-sex relationships and gender identity, remove the Pride flag from government buildings and kick trans athletes off of sports teams.

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Adding to the strain on the queer community, Trump’s self-described “Big Beautiful Bill,” recently passed in both houses in Congress, cuts public health funding for low-income Americans who receive Medicaid. LGBTQ+ Americans are twice as likely to rely on Medicaid to receive their health care than other Americans, said Alexandra Curd, a staff policy attorney at the national advocacy group Lambda Legal.

Over 40% of nonelderly U.S. adults living with HIV depend on the federal program for their healthcare needs compared to 15% for the general population, according to KFF. Many recipients rely nonprofit organizations funded by federal grants to get HIV and STI screenings and receive HIV prevention medications such as PREP and PEP, Curd said.

Because of the Medicaid cuts and the prospect of increased difficulty in accessing preventive care and emotional support, “We’re going to possibly be seeing rising infections rates for HIV,” she said.

Curd said a recent spike in HIV rates among Latino men could only worsen. The Centers for Disease Control and Prevention officials have cited a lack of adequate funding, racial bias, language barriers and mistrust of the medical system among the reasons that gay and bisexual Latino men account for a disproportionate percentage of new HIV cases.

Lambda Legal’s help desk has already received more requests for assistance with health care, employment and housing discrimination in the first half of 2025 than in all of 2024, with the most pressing need coming from trans and nonbinary callers.

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One piece of good news for L.A. came recently when Rep. Laura Friedman (D–West Hollywood) announced that the Trump administration had restored more than $19 million in federal grants for HIV and STI prevention and tracking that were earmarked for the L.A. County Department of Public Health but slashed by the CDC. Friedman said she and others spoke out against the cut were able to secure an extra $338,019 in federal funding for the new fiscal year starting June 1.

But it’s hard for healthcare organizations to celebrate given that vital funds for mental health and HIV programs were targeted in the first place.

Manny Zermeño, a behavioral health specialist at the Long Beach office of another queer community service organization, APLA Health, senses the distress in his clients. “There is fear, sadness and also with those feelings, it’s natural to have some anger and confusion,” Zermeño said.

The L.A.-based nonprofit focuses on providing free and affordable dental, medical, counseling and other services for queer people 18 and over. It was founded in 1982 as AIDS Project Los Angeles. Back then, a small team of volunteers worked a telephone hotline in the closet of the Los Angeles Gay and Lesbians Community Service Center, fielding calls from panicked residents seeking answers about what was then a fatal disease for which there was no treatment.

The organization operated the first dental clinic in the U.S. catering to AIDS patients out of a trailer in West Hollywood. After movie star Rock Hudson announced he had AIDS in 1985, the organization galvanized support among Angelenos by hosting the first-ever AIDS Walk fundraiser at Paramount Studios, according to its website.

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Kane and leaders of other community organizations in L.A. said they would rally once again, this time to assist the Trevor Project.

“All of us who have boots on the ground — you’ll literally have to drag us out by our ankles in order to not provide care to our community,” Kane said. “I don’t believe that queer kids will not have access to resources, because we won’t allow it.”

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Cyborg jellyfish could help uncover the depths and mysteries of the Pacific Ocean

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Cyborg jellyfish could help uncover the depths and mysteries of the Pacific Ocean

For years, science fiction has promised a future filled with robots that can swim, crawl and fly like animals. In one research lab at Caltech, what once felt like distant imagination is becoming reality.

At first glance, they look like any other moon jellyfish — soft-bodied, translucent and ghostlike, as their bell-shaped bodies pulse gently through the water. But look closer, and you’ll spot a tangle of wires, a flash of orange plastic, and a sudden intentional movement.

These are no ordinary jellies. These are cyborgs.

At the Dabiri Lab at Caltech, which focuses on the study of fluid dynamics and bio-inspired engineering, researchers are embedding microelectric controllers into jellyfish, creating “biohybrid” devices. The plan: Dispatch these remotely controlled jellyfish robots to collect environmental data at a fraction of the cost of conventional underwater robots — and potentially redefine how we monitor the ocean.

a person reaches into an aquarium tank

Caltech graduate student, Noa Yoder, a graduate student is one of the members of a team developing cyborg jellyfish, using a device made up of a container filled with sensors and two electrodes that attach to the jellyfish’s muscles.

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“It fills the niche between high-tech underwater robots and just attaching sensors to animals, which you have little control over where they go,” said Noa Yoder, a graduate student in the Dabiri Lab. “These devices are very low cost and it would be easy to scale them to a whole swarm of jellyfish, which already exist in nature.”

Jellyfish are perfect for the job in other ways: Unlike most marine animals, jellyfish have no central nervous system and no pain receptors, making them ideal candidates for cybernetic augmentation. They also exhibit remarkable regenerative abilities, capable of regrowing lost body parts and reverting to earlier life stages in response to injury or stress — they can heal in as quickly as 24 hours after the removal of a device.

The project began nearly a decade ago with Nicole Xu, a former graduate student in the Dabiri Lab who is now a professor at the University of Colorado Boulder. Her research has demonstrated that electrodes embedded into jellyfish can reliably trigger muscle contractions, setting the stage for field tests and early demonstrations of the device. Later, another Caltech graduate student, Simon Anuszczyk, showed that adding robotic attachments to jellyfish — sometimes even larger than the jellyfish themselves — did not necessarily impair the animals’ swimming. And in fact, if designed correctly, the attachments can even improve their speed and mobility.

A reflection of a hand reaching into a tank of water.

The device allows the scientists to pilot the jellyfish through ocean waters and record measurements of pH, temperature, salinity, etc.

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There have been several iterations of the robotic component, but the general concept of each is the same: a central unit which houses the sensors used to collect information, and two electrodes attached via wires. “We attach [the device] and send electric signals to electrodes embedded in the jellyfish,” Yoder explained. “When that signal is sent, the muscle contracts and the jellyfish swims.” By triggering these contractions in a controlled pattern, researchers are able to influence how and when the jellyfish move — allowing them to navigate through the water and collect data in specific locations.

A grad student holds the device used to equip a cyborg jellyfish.

These cyborg devices offer a cheaper (and more sustainable) option for marine research, making it more widely accessible for anyone looking to study the ocean.

The team hopes this project will make ocean research more accessible — not just for elite institutions with multimillion-dollar submersibles, but for smaller labs and conservation groups as well. Because the devices are relatively low-cost and scalable, they could open the door for more frequent, distributed data collection across the globe.

The latest version of the device includes a microcontroller, which sends the signal to stimulate swimming, along with a pressure sensor, a temperature sensor and an SD card to log data. All of which fits inside a watertight 3D-printed structure about the size of a half dollar. A magnet and external ballast keep it neutrally buoyant, allowing the jellyfish to swim freely, and properly oriented.

One limitation of the latest iteration is that the jellyfish can only be controlled to move up and down, as the device is weighted to maintain a fixed vertical orientation, and the system lacks any mechanism to steer horizontally. One of Yoder’s current projects seeks to address this challenge by implementing an internal servo arm, a small motorized lever that shifts the internal weight of the device, enabling directional movement and mid-swim rotations.

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A jellyfish at the Dabiri Lab at Caltech.

Unlike most marine animals, jellyfish have no central nervous system and no pain receptors, making them ideal candidates for cybernetic augmentation.

But perhaps the biggest limitation is the integrity of the device itself. “Jellyfish exist in pretty much every ocean already, at every depth, in every environment,” said Yoder.

To take full advantage of that natural range, however, the technology needs to catch up. While jellyfish can swim under crushing deep-sea pressures of up to 400 bar — approximately the same as having 15 African elephants sit in the palm of your hand — the 3D-printed structures warp at such depths, which can compromise their performance. So, Yoder is working on a deep-sea version using pressurized glass spheres, the same kind used for deep-sea cabling and robotics.

Other current projects include studying the fluid dynamics of the jellyfish itself. “Jellyfish are very efficient swimmers,” Yoder said. “We wanted to see how having these biohybrid attachments affects that.” That could lead to augmentations that make future cyborg jellyfish even more useful for research.

The research team has also begun working with a wider range of jellyfish species, including upside-down Cassiopeia jellies found in the Florida Keys and box jellies native to Kona, Hawaii. The goal is to find native species that can be tapped for regional projects — using local animals minimizes ecological risk.

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“This research approaches underwater robotics from a completely different angle,” Yoder said. “I’ve always been interested in biomechanics and robotics, and trying to have robots that imitate wildlife. This project just takes it a step further. Why build a robot that can’t quite capture the natural mechanisms when you can use the animal itself?”

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Trump administration sues California over cage-free egg and animal welfare law

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Trump administration sues California over cage-free egg and animal welfare law

The Trump administration has sued California over the state’s voter-approved animal welfare law, which protects hens, pigs and calves from being kept in small cages, claiming the law has driven up egg prices and violates federal farming laws and regulations.

“California has contributed to the historic rise in egg prices by imposing unnecessary red tape on the production of eggs,” wrote lawyers in the lawsuit, which was filed in U.S. District Court in Los Angeles on Wednesday.

California Gov. Gavin Newsom and Atty. Gen. Rob Bonta vowed to defend the state law.

“Pointing fingers won’t change the fact that it is the President’s economic policies that have been destructive. We’ll see him in court,” Bonta said in a statement.

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California’s animal-welfare law was approved by voters as Proposition 12 in 2018. The law was upheld by the U.S. Supreme Court in 2023.

“In a functioning democracy, policy choices like these usually belong to the people and their elected representatives,” wrote Justice Neil M. Gorsuch, a Trump appointee, in the lead opinion. He said that while many state laws may have economic effects in other states, they are only in violation of the Constitution if they were written with the intent to interfere with interstate commerce.

The Department of Justice contends the California law preempts federal laws, including the Egg Products Inspection Act, and that no state has the right to institute its own standards on the production or “quality, condition, weight, quantity or grade” of eggs that differs from those set by the federal government.

The law has been repeatedly challenged by the National Pork Producers Council and others. Just last month, the Supreme Court declined to accept a petition for certiorari from the Iowa Pork Producers Council.

In the suit filed Wednesday, the Justice Department contends that California’s egg standards “do not advance consumer welfare” and are “not based in specific peer-reviewed published scientific literature or accepted as standards within the scientific community to reduce human food-borne illness … or other human or safety concerns.”

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Egg prices soared earlier this year, soon after Trump took office. Most experts pointed to the H5N1 bird flu epidemic as the cause of the spike, as millions of egg-laying chickens across the nation were euthanized to prevent the spread.

Prices have since moderated as the outbreak has diminished. In the last 30 days, there has been only one reported commercial flock infection in Pennsylvania. The birds were not egg layers.

In February, the U.S. Department of Agriculture’s Secretary Brooke Rollins, penned an op-ed in the Wall Street Journal suggesting the Trump administration would target the law.

California egg producers have in the past opposed changing the law.

Bill Mattos, president of the California Poultry Federation, said in an interview in February that California egg farmers had spent millions of dollars to upgrade and adapt their farms. Reversing the law would put California poultry farmers — and all the other egg producers that sell to California — at a huge economic disadvantage by requiring them to invest millions more dollars to buy cages and re-adapt their facilities for such operations.

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Animal welfare advocates say the lawsuit is short-sighted and has the potential to hurt California’s egg-laying industry.

“With this ill-considered legal action, the Administration is dropping a set of stink bombs into the bosom of the egg industry,” said Wayne Pacelle, president of Animal Wellness Action and the Center for a Humane Economy.

He said California egg farmers are still recovering from the bird flu outbreak, and this suit, if successful, would disrupt the still fragile supply chain “and provide an opening for egg farmers from Mexico — which have no animal welfare standards at all — to access the California market.”

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