Science
The L.A. wildfires left neighborhoods choking in ash and toxic air. Residents demand answers
Nearly two weeks after the Eaton fire forced Claire Robinson to flee her Altadena home, she returned, donning a white hazmat suit, a respirator and goggles.
The brick chimneys were among the few recognizable features of the quaint three-bedroom 1940 house neighboring Farnsworth Park. Nearly everything else was reduced to ashes.
The scorching heat melted the glass awards her daughter had received for her theater performances, leaving behind deformed globs of crystal. Where her washer and dryer once stood, Robinson found only a blackened metal frame. The flames even managed to consume her cast-iron bathtub.
“The screws were the only thing that didn’t vaporize,” Robinson said after she scoured through the debris. “Everything else is in the air.
“How do we live in this highly toxic environment and make sure that people aren’t being sent back to their homes prematurely?” she said. “Families are just being told, ‘You’re clear to go in.’ They’re calling us and saying, ‘Is it safe?’ I’m like, ‘I don’t know.’”
Claire Robinson wears a protective suit while inspecting the ruins of her home, which was destroyed in the Eaton fire in Altadena.
(Ryan Ihly)
Tens of thousands of wildfire survivors, including Robinson, have returned to ash-cloaked neighborhoods, even as serious questions about what could be lurking in the debris remain unanswered.
Environmental regulators and public health officials have warned survivors that fire-damaged neighborhoods are probably brimming with toxic chemicals and harmful substances, such as brain-damaging lead and lung-scarring asbestos fibers. Air monitors have measured elevated levels of heavy metals miles downwind of the wildfires.
However, despite the dire warnings from environmental and health officials, fire officials and law enforcement have decided to reopen large swaths of the evacuation zones before disaster personnel could sweep residential communities for some of the most dangerous materials — such as firearm ammunition, propane tanks, pesticides, paint thinner and car batteries.
The EPA’s hazardous waste cleanup was initially projected to last three months. Earlier this week, President Trump signed a federal directive to shorten the cleanup time to 30 days, prompting EPA officials to increase the number of personnel and teams assigned to the hazmat response, and accelerate the process.
Meanwhile, the Army Corps of Engineers’ debris removal was expected to take 18 months. After Trump’s recent visit to L.A., the Army Corps now says it can be done in a year.
“Once a crew shows up to a property, depending on the complexity of that site, it can take two to ten days to clear the debris from that site,” said Col. Eric Swenson of the Corps. “It just really depends on how fast we get those rights of entry.”
As the monumental work of cleaning up the burned zones begins, Robinson and others say they would like to have clearer guidance and support from government agencies to keep people safe from toxic materials.
I think it’s unbelievable that people are being told just to go ahead and go back in.
— Claire Robinson, Altadena resident
Robinson said she thinks it’s alarming that many people have been returning to their destroyed homes without wearing protective gear, and have not been adequately warned about the risks as they begin to clean up their contaminated properties.
“We know that it’s all combusted, and it’s all in the air — metals, plastics. I think it’s unbelievable that people are being told just to go ahead and go back in,” Robinson said. “There’s a lack of coordinated, comprehensive expert response.”
This week, officials from the federal Environmental Protection Agency supervised specialized crews as they began collecting these substances, the first step in what is expected to be a yearlong, multibillion-dollar cleanup and recovery.
As of Wednesday morning, the EPA-led personnel had conducted preliminary surveys of about 2,500 of an estimated 14,500 fire-damaged properties. These crews have been collecting and removing hazardous waste only since Monday. After two days, they had cleared a total of three homes — marking the properties with laminated placards fixed on wooden posts.
A sign indicates EPA contractors have cleared out hazardous materials at a property in Altadena.
(Christina House / Los Angeles Times)
“As places were being [reopened], we had to take a different strategy,” said Harry Allen, an on-scene coordinator for the EPA. “Most fires, we haven’t had [people returning] this early. Because we’re in L.A., it’s really important that people are able to return. … So in this case, as Cal Fire lifted evacuation zones, we said, ‘Let’s get in there, let’s do recon as quickly as we can in advance of repopulation.’”
In California, where electric vehicles and plug-in hybrids make up more than one-quarter of car sales, the U.S. EPA has had to exercise extreme caution around an estimated 1,000 fire-damaged, lithium-ion car batteries — perhaps the most ever damaged by a wildfire. These batteries — also used in e-bikes, scooters and small electronics — have been known to ignite, explode or release toxic gases when exposed to extreme heat or fire.
It’s probably going to be the biggest lithium-ion battery removal activity that’s taken place in this country, if not the world.
— Steve Canalog, deputy incident commander for EPA Region 9
“It’s probably going to be the biggest lithium-ion battery removal activity that’s taken place in this country, if not the world,” said Steve Canalog, deputy incident commander for EPA Region 9, who has overseen cleanups of wildfires, floods, earthquakes and chemical spills.
“Just the high heat can damage the integrity of these battery systems, and they become very unstable and have the risk of spontaneously catching on fire and exploding,” Canalog said. “We have to treat them as unexploded ordnance.”
Because of the risk, EPA personnel transport each battery individually to processing areas. The batteries are often soaked in a saltwater bath to drain the remaining power, and are eventually shredded and taken to recycling facilities.
Hazmat crews typically hear popping and hissing sounds from damaged lithium-ion batteries. In neighborhoods where homes are only a few dozen feet apart, the EPA is telling residents that they should maintain a football-field-length distance from such batteries to avoid injury.
“At the end of the day, you can’t put out a lithium-ion battery fire. It burns so hot and energetically, and you can’t put it out with water or sand or fire blankets. The firefighting strategy is just to let it burn,” Canalog said.
On Wednesday morning, EPA-contracted crews fanned out across a fully razed block in Altadena.
Personnel wore white hazmat suits, blue latex gloves, black sunglasses and respirators as they navigated around a burned-out panel van and blackened metal bed frame. The workers sifted through the ash and debris left in the footprint of a house on Pine Street with shovels and hand tools until they discovered hazardous waste.
An EPA contractor looks for hazardous materials at a home in Altadena.
(Christina House / Los Angeles Times)
One worker carefully held the charred remnants of an iPhone between his index finger and thumb, gently placing it into a black trash bag held by a colleague. Soon after, another approached with his hands full.
“These are all batteries,” he said as he dropped about 20 scorched cylinders into a 5-gallon bucket one by one.
Earlier in the week, another crew extracted a lithium-ion battery from the husk of a Tesla sedan next door. They placed fire-damaged compressed-gas tanks in a row on the front lawn and marked each canister with a white “X,” an indication the fuel had already been burnt.
The EPA has been gathering EV batteries and other hazardous materials found on wrecked properties and moving them to two processing areas: a site near Topanga Beach, where the Santa Monica Mountains meet the Pacific Ocean, for Palisades fire debris; and a site in Lario Park near the foothills of the San Gabriel Mountains in unincorporated Irwindale for Altadena waste. There, EPA crews sort the materials before they’re transported to landfills — exactly where is still unknown.
The decision to stockpile hazardous waste in Lario Park sparked swift backlash from residents and public officials. Four nearby cities — Duarte, Azusa, Irwindale and Baldwin Park — have lodged official complaints arguing that transporting hazardous substances 15 miles outside the Eaton fire and into a popular recreation area poses a risk to thousands more.
“The wildfires that have ravaged Los Angeles County must be cleaned up, but I cannot understand how trucking hazardous waste through so many vulnerable communities, and placing near homes and schools, is the best possible option,” said Michael Cao, mayor of Arcadia, another city near the site.
The EPA has not responded to the complaints, but agency officials said its crews have installed liners to prevent toxic chemicals from leaching into soil. They will also conduct soil testing after their work has concluded.
The EPA’s hazardous waste removal alone is expected to take several months. Once that work is completed, the U.S. Army Corps of Engineers will step up for the second phase: the removal of ash and debris from properties whose owners have signed up for free cleanup, which is expected to take up to 18 months. Property owners can also opt to hire specialized private contractors if they choose to pay the cost themselves.
Although the smoke and ash from any wildfire are considered harmful, urban wildfires are especially dangerous. The smoke and ash from structures and cars can contain more than a hundred toxic chemicals and poisonous gases, according to state officials. Perhaps the most notable is lead, a heavy metal — which has no safe level of exposure for anyone, and which can permanently stunt the development of children when inhaled or ingested.
During the 2018 Camp fire in Paradise, elevated levels of airborne lead lingered for longer than a day. The metal-infused pollution traveled more than 150 miles and was measured as far away as San Jose and Modesto.
On Jan. 7, as the L.A. County wildfires broke out, air samples measured “highly elevated levels” of lead and arsenic over a dozen miles downwind of the Eaton fire, according to the South Coast Air Quality Management District. The highest concentration was recorded in Vernon, about 13 miles southwest.
Wearing protective gear, Eaton fire victim Ian Crick and his friend Matt Listiak search for keepsakes and valuables at his burned-out home in Altadena.
(Allen J. Schaben / Los Angeles Times)
Separately, a Los Angeles-based air quality monitor supported by federal funding showed that hourly measurements of airborne lead spiked on Jan. 8 and 9, when smoke from the Eaton fire cast a pall from Altadena to San Pedro.
As the Eaton fire approached the home of Felipe Carrillo, he urged his wife and two children to evacuate while he stayed behind to protect the home with a garden hose fitted with a high-pressure nozzle. For hours, Carrillo said, he tried to defend their home by preemptively spraying water onto the roof and later extinguishing small fires sparked by the onslaught of wind-driven embers.
By the next day, his was one of the few homes left standing on the block. It wasn’t until a week later that it dawned on Carrillo that he should also be worried about the smoke and toxic chemicals he was exposed to in the overnight firefight — which he waged without any protective gear.
“In that moment, it was fight or die,” Carrillo said.
After things calmed down, he went to see a doctor, who monitored his breathing for any signs of fluid buildup.
“They told me, you know, unfortunately, there’s no way of knowing any effects that may linger from the fact that you fought a fire without a mask or anything,” Carrillo said.
Ahead of the recent rainfall, Carrillo returned to the house to put sandbags around the perimeter of his property to keep ash from drifting onto the property. He’s also temporarily moved his family out of Altadena out of worry that his 14-year-old son and 10-year-old daughter could inhale the same toxic chemicals that he may have already been exposed to. In addition to the recent strong winds that have whipped up dust, Carrillo fears the ensuing cleanup will also kick up contaminants.
Army Corps of Engineers officials said they would spray water and mist on wildfire ash and debris to reduce the risk of airborne contaminants during their cleanup, but Carillo remains concerned.
“What about these dust storms that they’re gonna cause?” Carrillo said. “Let’s say my kids are in the backyard playing football and this big bulldozer kicks up a lot of dust and my kids inhale it?”
Some of the most concerning toxic contamination could be from older buildings. Lead-based paint and asbestos-containing construction materials were commonly used in homes until they were banned in the late 1970s. About 86% of the buildings near the Eaton fire, and 74% near the Palisades fire, were built before 1980, according to Cal Fire.
For Jane Williams, executive director of the nonprofit California Communities Against Toxics, the copious amounts of ash and rubble hearken back to the aftermath of the Sept. 11 attacks on the World Trade Center. In the months that followed, first responders and residents were exposed to a hazardous mix of asbestos, silica dust, heavy metals and other dangerous substances.
As the years passed, many of those affected by the devastation at Ground Zero were diagnosed with long-term health issues such as asthma, diminished lung function and other respiratory problems.
Over the course of January 2025, Williams watched in dread as social media videos and news coverage emerged showing Southern California residents whose homes had been destroyed sifting through the rubble unmasked.
This is the disaster after the disaster.
— Jane Williams, executive director of California Communities Against Toxics
“It’s exactly what happened with the Twin Towers,” Williams said. “This is the disaster after the disaster. Tens of thousands of people will go back to their properties, and most of them will not wear masks.”
At this point, little is known about the contaminants lingering in the wildfire ash in Altadena and Pacific Palisades. The August 2023 fire in Maui similarly incinerated residential communities composed largely of older housing. After that wildfire was quelled, experts found that ash contained a myriad of heavy metals, including lead, arsenic, copper and cobalt.
The L.A. fires have also led to concerns about water contamination. Water districts in Altadena and the Pacific Palisades/Malibu area have issued “do not drink” advisories for some areas. Suppliers that manage these water systems are assessing impacts of the fires, making repairs and testing for contamination.
According to the State Water Resources Control Board, these advisories “were issued as a precautionary measure until the condition of the system could be determined.” That said, the board’s website also notes that while building materials can contain chemicals that may contaminate water runoff from burned areas, this generally does not affect drinking water supplies, which are protected from exposure as long as infrastructure wasn’t directly damaged.
Completing the extensive cleanup efforts in the burned areas of L.A. will probably take years. In the meantime, residents — not just in the neighborhoods that burned but those nearby too — wonder how to protect themselves.
For example, Garo Manjikian evacuated from his Pasadena home with his wife and three children as the Eaton fire exploded. The family returned to find their house and garden covered in a layer of ash.
They spent days cleaning the house; washing their clothes, bedding and rugs; and throwing away pillows that had absorbed smoke. Manjikian said he hosed ash off the roof and out of the gutters, and power-washed the outside walls. Inside, he used the power washer and a shop vac to clean out ash that had collected in the windowsills.
I decided to just do everything I can myself to remove the ash.
— Garo Manjikian, Pasadena resident
“I decided to just do everything I can myself to remove the ash,” said Manjikian, who rented three industrial air purifiers and ran them in the house for about a week. “I still don’t for sure know how toxic it still might be in the house, but at this point, there is no more smell of smoke.”
But fine ash continued to float down, coating the house and the yard. Manjikian and his wife have been urging their three sons, the oldest aged 8 and the twins aged 5, not to play outside. And when they do have to leave the house, the boys are getting used to wearing masks again, like they did during the pandemic.
An EPA contractor looks for hazardous materials at a home in Altadena.
(Christina House / Los Angeles Times)
Manjikian has heard that some homeowners, schools and businesses have been paying for lab tests out of their own pockets to determine what types of contaminants need to be cleaned up. He said it would be helpful if the results of those tests could be made available for him and others who might have been exposed to hazardous waste.
“If they do the testing and find out there’s toxic material there, that would be good information for the neighboring houses to have, whether it came back positive on the toxic particles or negative,” Manjikian said.
For Robinson, the Altadena resident whose home was destroyed in the Eaton fire, the disaster has brought multiple layers of grief and unanswered questions.
Robinson is the founder of Amigos de los Rios, a nonprofit group, and already knew the importance of wearing protective gear to guard against hazardous materials during river cleanups and park construction projects.
When she returned to inspect the ruins of her home, as well as the group’s nearby office, which also was destroyed, she and her husband spent about $250 at a hardware store buying two disposable coverall suits, nitrile gloves and leather gloves to go over them, plus multiple packages of goggles, booties and N100 masks.
Robinson said she thinks L.A. County officials should be doing much more to help residents understand the risks and to protect themselves. Residents shouldn’t be left in the dark, she said, about how much danger they might encounter as they sift through the ashes.
“I would expect there to be a much more concerted, organized, comprehensive effort to share information,” she said, and also to provide protective gear for those who can’t afford to buy it.
Robinson is also concerned about the health effects. Recently, she has had difficulty breathing unlike anything she remembers. At times, she feels tightness in her chest, and experiences a fit of coughing and wheezing.
She said it’s crucial that as others return to inspect their devastated neighborhood, they take measures to protect themselves.
“I’m less concerned about looting,” Robinson said, “than I am about people being exposed to these things and facing short, medium and long-term health impacts.”
Times staff writer David Zahniser contributed to this report.
Science
Fans slam FIFA’s cooling breaks. Why the U.S. World Cup team doctor disagrees
While it may not be remembered as FIFA’s most controversial decision of the 2026 World Cup, the institution of mandatory cooling breaks in all matches has been met with boos and derision, with critics saying the pauses disrupt the game’s flow and offer little benefit in air-conditioned environments.
“They’re in a dome here! Temperature-controlled, climate-controlled — why are we having a break?” fumed one England fan to a radio reporter outside the England-Croatia match in Arlington, Texas, where field temperatures inside AT&T Stadium approached a comfortable 70 degrees Fahrenheit despite an outdoor heat and humidity index near 105 degrees.
But for Dr. Bert Mandelbaum, chief medical officer for U.S. men’s soccer and vice chair of Cedars-Sinai Medical Center’s orthopedic surgery department, the breaks set an important precedent for prioritizing athlete health in extreme heat, even at the highest levels of competition.
“I do think the cooling breaks are an important part of the game. I’m really excited and happy that we are employing those,” he said by phone Tuesday morning, hours after the U.S. team’s 4-1 knockout loss to Belgium.
“Difficult weather environments bring on dehydration and can create severe exhaustion, heat exhaustion, and those [conditions] have tremendous and dire consequences,” Mandelbaum said. “Talk radio could discuss it over and over again, but from our standpoint, the real messaging should be to our communities, our club players, that this is an important part of our game, and the cooling break is how we help manage it.”
Warming climate conditions are forcing changes to human behavior all around the globe, including on the pitch.
Extreme heat kills more people each year than all other forms of extreme weather combined. Elite athletes are not immune to its effects.
As temperatures during a game rise, the circulatory system diverts blood to the skin to lower core body temperatures at the same time that active muscles require oxygen-rich blood. This places extra strain on the heart, which pumps harder to keep up with demand. Sweating players lose electrolytes faster than they can consume them, leading to muscle cramps, fatigue and dizziness.
Virtually all aspects of the game degrade in the heat, Mandelbaum said. Players’ performance, recovery ability and decision making erode. Artificial turf becomes intolerably hot, and the soil in natural grass can harden until it’s like playing on concrete. Air molecules inside the ball expand, making it a harder and faster object. Even fans risk injury: 22 people were treated for heat-related illnesses at a FIFA Fan Festival in Houston last month.
Mandelbaum directs the FIFA Medical Center of Excellence at Cedars-Sinai and was part of the FIFA Medical Committee in 2014, when the first World Cup cooling break was called during a Netherlands-Mexico match in Fortaleza, Brazil.
At the time, the sport’s governing body recommended hydration breaks if temperatures surpassed 102.2 degrees.
This year’s World Cup, hosted across the U.S., Canada and Mexico, is the hottest played since the tournament began in 1930. It has coincided with a withering heat wave in the eastern U.S. With a heat index of nearly 104 degrees at kickoff, the July 4 match in Philadelphia between France and Paraguay is believed to be the second-hottest game in World Cup history, after a 105-degree match in 1994 between Ireland and Mexico in Orlando, according to meteorologist Brad Maushart.
FIFA announced in December that this year’s tournament would be the first in which all matches must pause once in each half for hydration and cooling, regardless of temperature conditions.
FIFA President Gianni Infantino said mandatory breaks equalize playing conditions in all matches. When they haven’t been loudly booing, many fans have noticed that teams often appear to spend as much time strategizing during the pauses as they do hydrating.
Given this, “if we were to use hydration breaks only in those matches where it was too hot and not in the other matches, we would give an advantage or a disadvantage to some of the coaches or some of the teams,” Infantino told Sports News Television.
Harry Brown, a postdoctoral research associate at the University of Sydney’s Heat and Health Research Centre, expressed frustration over the universal breaks in an op-ed in the journal Nature.
“Although it might seem fair to treat all games in the same way, this blanket approach risks undermining trust in heat-safety measures. If breaks are always used, regardless of risk, they stop being meaningful and start looking like routine stoppages,” Brown wrote.
Without active efforts to lower players’ core temperatures, pausing game play may not be enough to effectively stave off heat injury, he wrote. In his own research, Brown’s team compared the effects of passive breaks against breaks with active cooling measures on the health of players participating in 90-minute soccer games in 104-degree heat and 41% humidity.
When players cooled themselves with cold drinks and icy towels during short breaks and took longer halftimes, their core temperatures and cardiovascular strain lowered considerably more than they did after only passive breaks, Brown wrote.
Other physicians argued that even an under-utilized break was better for athletes than nothing at all.
“I would say that it’s better to err on the side of having cooling breaks rather than risk not having them,” said Dr. Miho J. Tanaka, an associate professor of orthopedic surgery at Harvard Medical School who also serves as a team physician for the Boston Red Sox and the New England Revolution.
“Ultimately, an individualized screening or monitoring process may be the safest approach, but we are still far from being able to precisely identify and intervene when an individual player may be at risk,” she said. “Until we are able to do so, having standardized breaks is a step in the right direction, as long as teams and players are informed when to escalate their level of concern and take action when more aggressive measures are truly needed.”
While a cooling break is rarely medically necessary inside a climate-controlled indoor stadium, Mandelbaum said it still sends a valuable message to players around the world: If hydration breaks are a part of the sport’s biggest event, they should be allowed at every other level of play.
“Not only is [the hydration break] a good thing, it’s a necessary thing,” Mandelbaum said. “This is the world’s game … we have to figure out how to help players at all levels and ages to have the ability to thermoregulate, hydrate, how to do it well.”
Science
New FireSat satellites promise faster wildfire detection over California and beyond
A trio of satellites set to launch early Tuesday will give wildland firefighters more time to respond and scientists more information about fire-prone regions across the globe.
The launch from Vandenberg Space Force Base is the first phase in a constellation called FireSat that will eventually cover the globe with 50 satellites collecting high-resolution imagery of fires and conditions on the ground every 20 minutes.
Earth Fire Alliance, the nonprofit group behind FireSat, got the project off the ground with $69 million in grants from the Bezos Earth Fund, Google and the Gordon and Betty Moore Foundation.
San José-based Muon Space built the satellites. Muon and the California Department of Forestry and Fire Protection are both FireSat partners.
The satellites use advanced thermal sensors to detect heat and can pick up signals from fires as small as a beach bonfire, as well as cooler fires that have been smoldering for days, according to Michael Falkowski, lead scientist at Earth Fire Alliance. That information will help fire officials, including the Los Angeles and Los Angeles County fire departments, understand whether blazes are growing, where they are headed and how much soot and smoke they are generating.
FireSat’s infrared instruments detected this small roadside fire in Medford, Ore., during a 2025 test flight.
(Muon Space)
“If we can differentiate between a smoldering fire and a flaming combustion fire, it really has a big impact on how we can understand the air quality emissions coming off the fire,” Falkowski said.
Fires that burn at low temperature produce more harmful gases than hot fires. Think about a campfire. When it’s burning hot with bright flames, there is relatively little smoke. When it’s smoldering, it produces lots of thick, white or gray smoke.
Wildfires work the same way.
A hot, fast-burning fire has enough oxygen and heat to burn with more complete combustion, producing less smoke for every pound of wood burned.
Earth Fire Alliance will provide data from these first three satellites in the next few months to Cal Fire and fire agencies in Oregon, Texas, Australia and Portugal. Cal Fire will share it with Southern California fire agencies.
The network will also turn its sensors on in the Amazon Basin for the Brazilian nonprofit Amazon Environmental Research Institute.
Cal Fire should begin receiving data from the scientists later this year, according to Falkowski, who joined Earth Fire Alliance last year from NASA, where he was an earth science program manager running the agency’s fire science program.
Instruments on the satellites will be able to detect fires the size of a shipping container, and distinguish between hot, intense wildfires and cooler, smoldering ones.
(Muon Space)
Falkowski said the new FireSat satellites are a big improvement over existing ones because they will be able to see smaller fires with better resolution and distinguish low-intensity “cool” fires from high-intensity hot ones.
“The satellites are really designed to measure fire across the entire temperature profile, so we can see cool fires all the way up to really hot fires,” he said.
That kind of granular information is important for emergency responders in the field and planners who make decisions about calling for extra help or ordering evacuations.
The National Oceanic and Atmospheric Administration operates three satellites that can detect a fire somewhere inside a square 1,230 feet across.
In contrast, instruments on the FireSat satellites will be able to detect small brush and roadside fires 16 feet across.
Cal Fire officials have long embraced new technology to get ahead of wildfires in recent years, testing autonomous firefighting helicopters and partnering with UC San Diego to use artificial intelligence to filter images from a network of more than 1,200 cameras on lookout towers and mountain tops. The Alert California program is able to spot smoke in a video and sends automated messages to one of 21 agency command centers across California.
In 2025, Alert California sent out automated warnings before authorities even received 911 calls from the public 51% of the time, according to Phillip SeLegue, staff chief of Cal Fire’s intelligence program.
A worker at Mountain View-based Muon Space puts the final touches on a wildfire-detection satellite scheduled to launch Tuesday on a SpaceX rocket. The satellites will be tracking fires across the globe.
(Muon Space)
FireSat will help incident commanders get better information more quickly, and, unlike fire-spotting aircraft, the satellites can linger over a fire for days or weeks and aren’t hampered by high winds or smoke.
Travis Medema, chief deputy for the Oregon State Fire Marshall, said his office will use FireSat to plan escape routes and monitor fires. “If we can fight these when they are small, we feel we will be more efficient and can protect Oregonians,” he said.
One expert noted that turning satellite data into information useful to firefighters and forestry managers will take some time. The FireSat data will “be amazing for fire nerds, but how and whether it helps individual fires remains to be seen,” said Joe H. Scott, founder of Pyrologix, a wildfire analysis firm based in Missoula, Mont. “Right now, we are not basing decisions on where satellites tell us a fire is,” Scott said.
Pyrologix develops wildfire risk management models for federal agencies, local governments and utilities. Scott said FireSat’s high-resolution data will help him build better prediction models that take into account weather, drought, plants and the history of fires in a region.
Science
14 propositions that could remake California taxes, housing, healthcare and elections
California voters will decide 14 statewide propositions in the Nov. 3 election, measures placed on the ballot mostly by either powerful interest groups or lawmakers that will affect the lives of millions of Californians.
While a proposed tax on state billionaires has dominated headlines, voters will also have a chance to weigh in on a number of consequential issues, from healthcare to voter identification requirements and more.
Californians are accustomed to legislating by the ballot and often face a list of propositions. But even by the standards of the state’s direct democracy process, the 2026 election stands out. The campaigns supporting and opposing the ballot measures have already collected more than $100 million in contributions, and are expected to use their money to inundate the television airwaves, livestreams and social media feeds and to flood mailboxes with glossy campaign mailers over the coming months.
Here are the measures on the Nov. 3 ballot:
Proposition 1: The Veterans and Affordable Housing Bond Act of 2026
Spurred by the state’s affordable housing shortage, state lawmakers are asking voters to approve an $11.25-billion bond to boost affordable housing construction around the state.
Advocates say the funds would help build more than 40,000 shovel-ready affordable homes that are unable to move forward because of a financing gap and help preserve thousands of other existing units.
Proposition 1 includes specific funding for high-need groups, including $1.25 billion for a veterans’ home loan program, $1.15 billion for supportive housing for homeless people, $350 million for student housing at state universities, $450 million for farmworker housing and $200 million for Native American tribes.
“In California, we don’t turn away from the needs of our people — we meet them head-on,” said Gov. Gavin Newsom in a statement about the measure. “We are giving voters the power to help shape the future of housing in our state. This bond is about building communities, expanding access and affordability in California, where every family has a fair shot at a place to call home.”
Some Republicans took issue with the measure’s title — “The Veterans and Affordable Housing Bond Act of 2026” — arguing that it included veterans to have broader appeal while doing little to actually help homeless veterans.
“It’s a sad thing to say that you have to use the veterans as bait to get the people of the state of California to approve an $11-billion bond, and I just think that’s shameful,” said Sen. Shannon Grove (R-Bakersfield), an Army veteran. “Call it what it is. It’s a homeless bond, and it does include some veterans’ benefits, but it is not a veterans bond.”
Proposition 2: Save for California’s Future Act
This measure would give California lawmakers more flexibility over state spending and allow them to save money that could otherwise go back to taxpayers.
The measure, supported by Newsom, seeks to exempt deposits into state savings accounts from a spending limit that voters adopted through a series of ballot measures dating back to the late 1970s, and to increase the share of tax revenue that can be put into the rainy day fund.
Under an existing state appropriations restraint, also known as the Gann Limit, lawmakers cannot spend more than an amount determined by a formula that takes annual tax proceeds, changes to the population and cost of living into consideration. Tax revenue above the limit must be divided between schools and refunds to taxpayers.
The measure could incentivize lawmakers to save more money because funds tucked away in the rainy day fund would no longer be considered expenditures counted toward the spending limit. By allowing lawmakers to set aside more money that is not subjected to state spending limits, it could also allow them to hold onto money that otherwise would be returned to taxpayers under current law.
This proposed constitutional amendment was placed on the ballot by state lawmakers.
Proposition 3: Fund schools and healthcare
If passed, this proposition would make permanent an existing tax on high-income Californians.
The existing tax, passed by voters in 2012 and extended in 2016, is set to expire in 2031. It applies to people who earn more than $360,000 for single filers, $721,000 for joint filers, and $490,000 for heads of household. It adds between 1% to 3% to these high earners’ personal income tax rates.
According to the initiative text, the funds are largely earmarked for local school districts and community colleges, with some portion of the money going to California’s rainy day reserves — which the state uses to prevent cuts to healthcare and other services when revenues decline. The measure says revenues cannot be spent on state bureaucracy or administrative costs.
The state’s nonpartisan Legislative Analyst’s Office expects the measure to bring in between $5 billion and $15 billion annually, depending on how the stock market is performing, with the amount expected to grow over time.
Proposition 4: Public financing of campaigns
This measure would allow the state and local governments to offer public campaign financing to candidates running for elected office. Candidates receiving the funding must abide by expenditure limits and adhere to the criteria set by statute, ordinance or charter to demonstrate broad support, such as demonstrate a large number of small dollar contributions.
None of the public campaign financing can come from funds designated for education, transportation or public safety. The financing cannot discriminate based on party or whether a candidate is a challenger or an incumbent. The public funds cannot be used for legal costs, fines or to pay back personal loans to a campaign.
This measure was placed on the ballot by the California Legislature and governor.
Proposition 5: Recall elections
This measure would change the way recall elections are conducted in California. Under this proposed constitutional amendment, during a recall election, voters would decide solely whether a politician should be removed from their elected position. If the recall is successful, that office would remain vacant until it is filled in accordance with existing law — either by a separate election or by appointment.
Under current law, voters make two separate decisions during a recall election: Whether to remove the subject of the recall from office and, if they are booted, which candidate running to replace them should fill the position. The candidate who receives the most votes wins, even if they receive far less than 50% of the vote.
The proposed constitutional amendment would also allow the recalled politician to run in the next election to fill the vacancy, though they cannot be appointed to their former post. Under the current system, office holders targeted in a recall are barred from being a candidate to replace themselves in that same election.
The proposal comes in the wake of the unsuccessful, Republican-led recall campaign against Gov. Gavin Newsom in 2021, which in part tested voter sentiment about his response to the COVID-19 pandemic. One of the sponsors of the recall-reform measure was Sen. Josh Newman (D-Fullerton), who was recalled from office in 2018 after he voted to increase gas taxes for road repairs, legislation pushed by then-Gov. Jerry Brown. Newman won back his seat in 2020.
This proposed constitutional amendment was placed on the ballot by the California Legislature.
Proposition 37: Homeownership loan program
Proposition 37 would create a down payment assistance program to help middle-class Californians buy a new home.
The measure, spearheaded by former state Senate Majority Leader Bob Hertzberg, would allow middle-class California residents — defined as anyone who makes less than 200% of an area’s median income — borrow most of their down payment for a new home that they plan to live in. It is designed to boost construction of single-family homes.
A down payment is traditionally about 20% of the purchase price of a home. If passed, the measure would create a state-administered loan program that offers qualified homebuyers a second mortgage of up to 17% of a home’s sale price.
The proposition would allow the California Housing Finance Agency to issue up to $25 billion in revenue bonds to administer the program.
The Legislative Analyst’s Office does not anticipate the measure to result in direct state or local costs because the costs are meant to be covered by homeowners’ mortgage payments.
Proposition 38: Immunology research bond
Proposition 38 asks voters to approve an $8.4-billion bond to support research in the burgeoning fields of immunology and immunotherapy, which study the human immune system and how it can be used to prevent, treat and cure diseases.
If approved, half of the funding would go toward the creation of a new immunology and immunotherapy research institute affiliated with the University of California. The other half would fund research grants for other California-based universities and nonprofit medical research institutions to study potential treatments for cancer, Alzheimer’s disease and heart disease.
The measure has a built-in discount program for Californians — it requires that any technology or drugs developed from bond-funded research be sold to California patients for a price at least 20% below the national average.
Backers of the proposal include the Alzheimer’s Assn., National Multiple Sclerosis Society and other healthcare groups. Supporters argue the funding would facilitate research that could save lives and save patients “billions of dollars in health care costs by preventing and curing a range of debilitating diseases and illnesses,” according to the initiative text.
Proposition 39: Voter identification
Proposition 39 would require Californians to show government-issued identification every time they vote at the polls.
Currently, Californians must affirm under penalty of perjury that they are U.S. citizens and provide information to verify their identity, such as their birth date, driver’s license or Social Security number, when registering to vote, but they don’t have to present identification when they cast their ballot.
Under this measure, voters would also need to present government-issued ID each time they vote in-person at the polls or, if voting by mail, provide the last four digits of a “unique identifying number from government-issued identification” that matches the one they provided when they registered to vote. California would be required to provide free voter ID cards on request, and state and county election officials would be required to verify registered voters are U.S. citizens by using government data.
The voter ID measure has support from Assemblymember Carl DeMaio (R-San Diego), who has framed it as necessary to prevent voter fraud and restore trust. It comes as President Trump is pushing for stricter voter identification requirements and severe limits on voting by mail.
Democrats and voting rights groups, including the American Civil Liberties Union, oppose the measure, saying California’s elections are already secure — voter impersonation and noncitizen voting cases are rare — and that it would make voting harder for many eligible voters, including people who have changed names, move frequently or face housing instability.
According to the Legislative Analyst’s Office, the measure would make election administration more expensive, costing state and local governments anywhere from tens of millions to low hundreds of millions of dollars annually, plus tens of millions in upfront implementation costs.
Proposition 40: Billionaire tax
This proposition, supported by a healthcare worker union, would impose a one-time tax of 5% on taxpayers and trusts with assets valued at more than $1 billion.
According to a state-prepared summary of the measure, 90% of the tax revenues would be spent on healthcare and 10% would fund food assistance or education-related programs. California’s richest residents would be able to spread the payments over five years.
The Legislative Analyst’s Office estimates it would generate “tens of billions of dollars” spread over several years, but would lead to an annual decrease in state income tax revenues of “hundreds of millions of dollars or more.”
Newsom has publicly opposed the tax, arguing it would lead wealthy residents to leave the state and lead to future budget problems. Other opponents include Planned Parenthood, the California School Boards Assn. and a nonprofit called Building a Better California that is backed by tech execs and venture capitalists.
Some billionaires have already proactively moved themselves or their businesses out of the state because of the proposal, which as written would retroactively apply to residents of the state as of Jan. 1.
Proposition 41: Requires limits and audits on new state special taxes
This is one of two ballot measures crafted by opponents of the proposed initiative to impose a new tax on California billionaires, and it would in effect undercut or curtail that wealth tax.
This proposed ballot measure would also prohibit any new state taxes from being excluded from the state’s current voter-approved spending limit. The proposed billionaire tax would have such an exclusion. If the billionaire tax proposal is approved by voters but this proposal receives more votes, the billionaire tax measure would be voided.
The measure would require the state auditor to conduct a financial and performance audit of proposed ballot initiatives and of the programs they fund. The measure would require audits of any program that would receive funding from the special tax in the proposed initiative to assess the efficiency of the program and recommend who ought to reduce its annual costs by 10%. If the measure passes, the costs of the audits would be paid via the revenues generated by the special tax.
This ballot initiative is one of two so-called poison pills to sink the billionaire tax that is being bankrolled by Building a Better California, which has raised well over $100 million from the state’s most affluent. The largest donor is Sergey Brin, a co-founder of Google, who has reportedly moved out of California because of the tax proposal. He donated at least $82 million to the group as of late June.
Proposition 42: Ban on new state personal property taxes
This is one of two ballot measures created by opponents of the proposed initiative to impose a tax on California billionaires, and it would in effect void that wealth tax.
This proposed ballot measure would prohibit new taxes on personal property, intellectual property, retirement accounts and other assets and would limit situations in which a ballot measure or state lawmakers can impose or raise taxes retroactively — both of which are essential parts of the billionaire tax initiative.
If the billionaire tax proposal is approved by voters but this proposal receives more votes, the billionaire tax ballot measure would be voided.
This ballot initiative is one of two so-called poison pills to sink the billionaire tax that is being bankrolled by Building a Better California, which has raised well over $100 million from the state’s most affluent. The largest donor is Sergey Brin, a co-founder of Google, who has reportedly moved out of California because of the tax proposal. He donated at least $82 million to the group as of late June.
Proposition 43: Voting thresholds for special taxes
The measure would prohibit local governments from imposing new special taxes unless the proposed tax receives approval from two-thirds of voters. The restriction also applies to citizen initiatives, which currently only need a simple majority vote to be approved.
The Howard Jarvis Taxpayers Assn. supports Proposition 43. The advocacy group has characterized the measure as an effort to “save” 1978’s Proposition 13, the landmark initiative that capped California property tax increases and required a super-majority of votes to approve most future tax increases.
Assemblymember Buffy Wicks (D-Oakland), who authored the legislation that became Proposition 43 — ACA 22 — opposes the measure and has urged Californians to vote against it. She said the only reason she crafted the bill was because it was a necessary bargaining chip to torpedo another ballot measure backed by the Howard Jarvis Taxpayers Assn. that would have devastated revenues for local governments and retroactively rescinded some local tax increases.
“I authored ACA 22 not because I wanted it to become law — but because it was the only path left to get the more dangerous initiative off the ballot before time ran out,” Wicks posted on social media.
Proposition 44: Regulate health clinic spending
If passed, Proposition 44 would require federally qualified health centers to spend 90% of their revenue on “program services advancing their charitable purpose” rather than management and overhead. Community clinics that fail to comply would be penalized, with fines placed in a state-managed fund to be spent on clinic workforce programs.
Advocates say clinics spend too much on executive pay and other administrative costs and not enough on patient care. The measure, which would dictate how clinics spend money, is designed to fix that. The measure is backed by the Service Employees International Union-United Healthcare Workers West, an influential healthcare workers union, which argues it will help hold clinics accountable.
In May, the California Primary Care Assn., which represents more than 2,300 community health clinics, sued to block the ballot measure. The state’s powerful doctors’ lobby, the California Medical Assn., also opposes the measure, arguing it would ban clinics from keeping funding in reserves and hamper their ability to upgrade equipment or expand to new locations.
The Legislative Analyst’s Office estimates that enforcing the measure would cost the government up to the low tens of millions annually, and that much of the cost would be paid for through penalties and fees charged to affected clinics. The office says the measure has “uncertain” impacts and could lead to clinic closures.
Proposition 45: CEQA reform
This proposition would amend the California Environmental Quality Act, or CEQA, and speed up the process for projects deemed “essential,” including certain housing, water, health, public safety, energy and transportation projects.
Jails, detention facilities and oil or natural gas production facilities would not be considered “essential” projects, according to the measure text.
If passed, the measure would set deadlines for public agencies to complete environmental review, allow expedited review of a project’s environmental impacts — currently, public agencies are required to consider a range of feasible alternatives to reduce environmental impacts — and establish deadlines for filing and resolving lawsuits.
CEQA lawsuits have often been used to block construction of housing in the state. For instance, in Berkeley, neighbors used CEQA — citing potential noise impact from partying students — to delay, for years, UC Berkeley’s construction of student dorms on People’s Park.
The Legislative Analyst’s Office estimates that the state and local government implementation will cost in the tens of millions of dollars for the first several years. It notes the legislation would probably result in net savings in the long term due to reduced administrative and legal workload.
Times staff writers Seema Mehta and Phil Willon contributed to this report.
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