We spent the last year trying to track Mayor Karen Bass’ progress addressing homelessness. But for most of the year, we couldn’t get an accurate overall picture — partially because there were errors in the data, and partially because of the way homelessness data is recorded.
Why it matters: The city has allocated $1.3 billion for this year alone to invest in solutions for the homelessness crisis — a budget Bass called “unprecedented.” The state of emergency she declared as one of her first acts as mayor increased her powers to tackle the crisis.
Getting clear and accurate answers on how many people are being housed is essential to holding the Bass administration accountable on this problem.
What exactly was wrong with the data: Sometimes there were errors and missing information. The Bass administration said that only 65% of the data on Inside Safe in March was accurate, for example. There are also duplicate records, although we’re not sure how many, because data is collected program by program, and a person can be counted in more than one program.
Where things stand now
Here are some recent stories on the state of the homelessness crisis in L.A.
If you’re trying to address homelessness in L.A., there is some foundational information you need in order to evaluate what’s working and what’s not, such as:
How many unhoused people is the city moving into housing?
How many of those people are staying housed?
How has this changed from the number of people housed last year?
For almost a year, we’ve been hunting down answers to these seemingly simple questions for the Promise Tracker, a project to hold L.A. Mayor Karen Bass accountable to her campaign pledge to house 17,000 unhoused Angelenos by the end of her first year in office.
For most of the year, we couldn’t get accurate answers. In fact, no one has been able to give clear answers to these questions for years, so this was a problem long before the current administration. But the Bass administration set their goal of housing 17,000 Angelenos without a thorough understanding of how such data is tracked and logged, meaning that for much of her first year in office, they — and therefore us at LAist — were operating without a clear picture of how much their interventions were working.
We revealed in late April that council members were not receiving the data reports they had ordered months earlier about the mayor’s signature homeless housing program Inside Safe, which would show exactly where the money is going and how many people have been sheltered. Council members then pressed the mayor’s office for the data, and numbers eventually started being provided to the council about two months later.
Until November, the overall housing numbers reported out by the city were rife with duplicates and other issues. As we investigated each of these issues, we learned that there were two key reasons why:
The data collection process for some housing programs left room for many errors and missing information, and there wasn’t a system in place to ensure accuracy.
Data on people entering housing was collected separately by program, so it wasn’t clear how much overlap there was among people moving between programs or cycling in and out.
Homelessness in LA
Mayor Bass promised to house 17,000 Angelenos during her first year in office. How’s she doing so far? Our Promise Tracker is keeping tabs on Bass' progress tackling homelessness in L.A.
Although government officials say they have been working to address both issues, this was the obstacle in front of us all year: Even though we received updates on how many times people were housed, the numbers were likely inflated, and we had no idea by how much.
We also didn’t know how many of those people were still housed, or how many returned to the streets. Nor how this year’s numbers compare to previous years. All this made it impossible to have a clear picture of how progress was or wasn’t being made.
The city has allocated $1.3 billion for this year alone to invest in solutions for the homelessness crisis — a budget Bass called “unprecedented.” The state of emergency she declared as one of her first acts as mayor increased her powers to tackle the crisis.
Getting clear and accurate answers on how many people are being housed is essential to holding the Bass administration accountable on this problem. Government entities are calling out data issues as well. Just last week, the city controller’s office released an audit report showing that the lack of accurate data has prevented people who are unhoused from accessing available shelter and temporary housing.
L.A. City Councilmember Monica Rodriguez also referenced this problem during an August city council meeting about Bass’ signature temporary housing program: “There's a fundamental problem with getting some very basic information here, and it's costing taxpayers millions of dollars.”
How LA houses unhoused people
L.A. has several distinct programs that house people, but they can be broken up into a few broad categories:
Temporary housing: Whatever you think of as a “homeless shelter” would be included here. This kind of housing isn’t meant to be long term — whether it’s group shelters, tiny home villages, or repurposed hotels and motels. The goal of these programs is for people to stay until they can find permanent housing.
Permanent housing: This is housing you can stay in long term, like an apartment with a renewable yearlong lease. The government provides permanent housing for unhoused people in two main ways:
Tenant-based vouchers: Think of these sort of as housing coupons that make privately owned units affordable for people with low incomes.
New permanent housing units: These are either newly constructed with government money (like Proposition HHH) or existing units that local governments acquire for housing.
Tracking programs, not people's overall path
There actually is a lot of data about how many people are being housed, but it’s tracked by program, making an overall picture of progress challenging to get.
The government funds several programs to place people into temporary and permanent housing: Bass’ Inside Safe program, tiny home villages, family shelters, permanent housing vouchers issued by the federal government, vouchers for veterans, and more. Different agencies track data for certain types of programs — the Los Angeles Homeless Services Authority (LAHSA) manages data for temporary housing, the Housing Authority of the City of L.A. (HACLA) oversees vouchers, and the city’s Housing Department tracks how many people live in new permanent housing units funded by the city’s Proposition HHH.
Because a person might be a part of more than one homelessness program over time, they might be recorded more than once. And because these agencies don’t have direct access to each other’s data, this leads to duplicates, which can lead to inflated numbers.
At a Dec. 6 press roundtable showing homelessness progress numbers for Bass’ first year, city officials urged reporters not to add up the number of people housed in each program to get a total number of people housed because they had not removed any duplicate records.
The data is set up this way because individual programs are tracked separately.
Tracking the outcomes of programs makes sense — there are a lot of taxpayer funds on the line. Inside Safe alone has a budget of $250 million for just this fiscal year. And the city’s HHH housing program is authorized to borrow up to $1.2 billion, with additional funds for this housing coming from other levels of government. So it’s important to make sure that money is being spent effectively.
Program-oriented data answers questions like:
How many times did people enter a particular housing program?
How many times did people leave?
What do numbers look like at specific shelters?
This can tell you whether services are being utilized and how much it costs, on average, to provide a service, like housing one person in one Inside Safe motel room.
But when the numbers only tell a story about programs and not people, it’s hard to get a sense of what’s happening overall. It prevents government leaders — and the public — from getting answers that measure overall progress, such as:
How many people moved into housing across all programs this year?
How many moved from one program to another?
How many returned to encampments?
How many left for other housing alternatives not provided by the government?
Bass summed up the problem when she spoke with our radio program AirTalk in November.
“The data is process-oriented — how many people came into housing,” she said. “It’s not outcome oriented, meaning: How many people stayed in housing and what happened to them four to five months down the line? That data is not available.”
For example, in a July report the Bass administration said that when it looked at the March 2023 numbers for Inside Safe collected by LAHSA and compared it to reports from people running various shelters, they found that only 59% of Inside Safe’s data on people entering the program matched what was in LAHSA’s system.
The accuracy rates were far worse for permanent housing data and program exit data: 4% and 0%, respectively, according to the report.
Although LAHSA collects and maintains data across all the temporary housing programs in L.A., LAHSA officials usually aren’t the people handling the data entry of when someone enters or leaves a shelter or housing program. That responsibility falls to the service providers, usually nonprofits paid by LAHSA to run the shelter or housing under a contract.
According to LAHSA officials, there are about 6,000 people across different service providers who enter data into this system, making it challenging to ensure consistency and accuracy across the board.
When service providers record a new intake — that is, someone entering one of the government housing programs — sometimes the information they have is pretty limited, perhaps just a first name or a physical description, according to Bevin Kuhn, LAHSA’s senior advisor for IT and data management. These incomplete records of individuals are another challenge that leads to duplicates, Kuhn says. LAHSA officials say they constantly work to de-duplicate by merging profiles that have similar information.
Since we launched the Promise Tracker in May, we had been warned there were duplicates, and we flagged this in our earliest updates. It wasn’t until November, six months later, that the Bass administration shared numbers that it said were de-duplicated for temporary housing.
Providing detailed data entry while trying to move people out of encampments and into housing is “a lot for on-the-ground workers, especially if I’m a caseworker and I’m not data savvy,” said Kuhn. “It’s really hard to capture all those data elements perfectly.”
Most shelters don’t have much day-to-day turnover, Kuhn said. But one Inside Safe operation — in which an encampment is cleared and people living there are offered temporary housing — can lead to dozens of new housing placements in one day, making it a lot more challenging to enter data efficiently.
The L.A. Grand Hotel in downtown, one of the sites used as temporary housing for Inside Safe.
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Brian Feinzimer
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LAist
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LAHSA requires service providers to enter data on people entering and exiting shelters within 24 hours, according to the recent city controller audit. But the audit found that “LAHSA does not monitor or enforce their data entry requirements” to make its bed reservation system function properly.
For the Inside Safe motel program, providers also are required to log when unhoused people exit the motel room program, but LAHSA doesn’t enforce this requirement, a LAHSA executive told city council members in August. This means that a lot of service providers skip this step, she said at the time.
That meant the city might have been unknowingly paying for empty motel rooms, nearly eight months after the program had launched, council members were told by the mayor’s staff.
The mayor’s staff say they worked closely with LAHSA to deploy a system to resolve the discrepancies, and that LAHSA started using a revamped tracking methodology in June that improved the accuracy rates. And Kuhn said the agency beefed up their teams on the ground to work alongside providers to verify the accuracy of data.
It took most of this year to put the necessary changes in place and for the data to reach what the Bass administration considered an acceptable rate of accuracy for sharing with the public.
We're finally getting some clarity
Many of the data problems we encountered appear to be longstanding issues that Mayor Bass inherited when she came into office. She’s expressed frustration multiple times over these systems and the quality of the numbers. And she’s said her administration is working to establish new and better data systems, with the help of a new LAHSA CEO, Va Lecia Adams Kellum.
Bass is also taking on more of a direct oversight role at LAHSA — in a way that prior mayors have not — by putting herself on its governing commission. County supervisors Lindsey Horvath and Kathryn Barger have done the same, with Horvath now serving as the commission’s chair.
They’ve already made some changes to address some of these issues. LAHSA and the mayor’s office confirmed that they removed duplicates from their temporary housing numbers. We now know how many individual people moved into temporary housing.
As of Dec. 1, they reported that 21,694 people had moved into temporary housing in the year since Bass came into office in December 2022.
They also reported a 65% retention rate across all temporary housing programs — that is, 65% of the people who entered temporary housing are still housed as of today in either temporary or permanent housing.
But when it comes to the overall picture, we still don’t have reliable numbers.
There could still be double-counting of people who went from temporary housing into a permanent housing program. We don’t know how many people have left permanent housing and fallen back into homelessness. And we don’t know if that 65% retention rate is an improvement over prior years, because we don’t have a retention rate for 2022.
However, officials say more clarity is on the horizon. According to the mayor’s office, LAHSA and the city Housing Authority (which keeps data on permanent housing) have agreed to share more of their data going forward, so that everyone can better understand how many individuals are being housed across all types of housing, not just temporary housing.
What we know today
Here are the current, best-available answers to those simple, foundational questions that we’ve spent all year trying to figure out:
How many unhoused people has the city moved into housing?
At least 21,694 people as of Dec. 1, according to temporary housing numbers from LAHSA and the mayor’s office. Adding people who’ve used vouchers or moved into new permanent housing units, that number could be as much as 11,000 higher — but because there’s likely some overlap with those in temporary housing, we don’t know how much higher it actually is.
How many of those people are staying housed?
A 65% retention rate for 21,694 people suggests that around 14,000 people who moved into temporary housing this year would still be housed. We don’t know what the retention is for people who have moved into permanent housing.
How has this changed from 2022?
The mayor’s office provided these numbers on Dec. 6:
21,694 people moved into temporary housing in 2023, up from 16,931 the year before
7,717 people moved into housing using vouchers in 2023, up from 5,223 the year before
3,551 people moved into new permanent housing units in 2023, up from approximately 1,361 the year before
This suggests increases all around, but because there are still potential duplicates between different types of housing across both years, we still don’t know what the actual change is in the overall number of people housed.
Heading into Year 2 of Bass’s term, here are the questions we’ll be asking:
How many people are being moved from temporary housing into permanent housing, especially in Inside Safe?
What is the retention rate and how does it compare to retention for 2023?
Are there other questions we should be asking? Let us know by submitting your question below.
Erin Stone
covers climate and environmental issues in Southern California.
Published February 9, 2026 5:00 AM
Local high school students tour Eastern Municipal Water District facilities in Perris in the Inland Empire.
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Courtesy Eastern Municipal Water District
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Topline:
As water agencies across the state grapple with the increasingly extreme effects of climate change, they’re also facing another problem: the incoming “silver tsunami.” That’s the phrase coined by the industry to illustrate the fact that much of the workforce that keeps our water flowing and safe are baby boomers getting ready to retire.
The background: Nationwide, about a third of the nation’s water workforce is eligible for retirement within the next decade, “the majority being workers with trade jobs in mission critical positions,” the Environmental Protection Agency wrote in a 2024 report.
Why it matters: To deal with how pollution in our atmosphere is driving longer, hotter droughts as well as increasingly intense rain when it does come, water agencies across Southern California are working to boost aging infrastructure and invest in more diverse water supplies, such as recycled water. The lack of people to staff those changes is a problem for pretty much every water agency, urban and rural.
Read on ... to learn how one local water agency is bringing high schoolers into the water workforce pipeline.
As water agencies across California grapple with the increasingly extreme effects of climate change, they’re also facing another problem: the incoming “silver tsunami.”
That’s the phrase coined by the industry to illustrate the fact that much of the workforce — largely baby boomers — that keeps our water flowing and safe are getting ready to retire.
Nationwide, about a third of the nation’s water workforce is eligible for retirement within the next decade, “the majority being workers with trade jobs in mission critical positions,” the Environmental Protection Agency wrote in a 2024 report.
Climate resilience needs a workforce
To deal with how pollution in our atmosphere is driving longer, hotter droughts, as well as increasingly intense rain when it does come, water agencies across Southern California are working to boost aging infrastructure and invest in more diverse water supplies, such as recycled water.
The lack of people to staff those changes is a problem for pretty much every water agency, urban and rural.
L.A. is the second-largest city in the nation and is spending billions on water recycling and stormwater capture, for example, but it has been struggling to fill needed positions at its four wastewater treatment plants.
The city of L.A. plans to clean all wastewater that flows to the Hyperion plant.
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Eric Garcetti via Flickr
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The city plans to treat nearly all of the Hyperion wastewater facility’s water to drinkable standards in the coming decades. To support that massive expansion, Hi-Sang Kim, the operations director at Hyperion, told LAist in 2022 the facility will need to boost its workforce by at least 30%.
For less urban water agencies, the challenge is even greater. The Eastern Municipal Water District serves close to 1 million people (and growing), as well as agricultural customers in western Riverside County and northern San Diego County.
They estimate as much as half of their workforce could retire within five years.
"We are in dire need of technical skill sets."
— Joe Mouawad, general manger, Eastern Municipal Water District
“Not only are we investing in new infrastructure, but we have aging infrastructure, so we are in dire need of technical skill sets to operate, maintain everything from treatment plants to pipelines, to pump stations,” said Joe Mouawad, the water district's general manager.
Jobs in the water industry — potable water and wastewater treatment operators, engineers, managers, skilled maintenance, public relations and more — are well paid and secure, Mouawad said, but it’s hard to fill the needed positions.
“We are finding it more challenging to backfill retirees,” he said. “It's not so much a lack of interest — I think it's a lack of awareness.”
Building a pipeline for water jobs
Those job gaps are why Eastern Municipal has become a leader in building the water workforce pipeline. For decades, the water district partnered with local schools to provide education about water conservation and what they do. But over the last decade, as the retirement forecast grew more dire, the agency has shifted to prioritize skills-based programming and partnerships with local high schools.
Local high school students tour Eastern Municipal Water District facilities in Perris.
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Courtesy Eastern Municipal Water District
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In 2013, they launched the Youth Ecology Corps program, for young adults between 18 and 24. Many who went through the program and paid internships are now full-time employees, said Calen Daniels, a spokesperson for the agency, who himself went through the program.
In recent years, the water agency has focused on younger potential future employees through a variety of Career and Technical Education programs at local high schools, including in automotive tech, engineering, agriculture, construction and information systems, said Erin Guerrero, Eastern Municipal’s public affairs manager overseeing its education programs.
“We're starting earlier and getting these kids real world experience,” Guerrero said.
Michelle Serrano teaches a two-year pre-apprenticeship Environmental Water Resources program at West Valley High School in Hemet. Students leave the program equipped to take the state-level certification exam for a job as a water treatment operator or water distribution operator once they turn 18.
Clayton Gordon, GIS mapping administrator at EMWD, talks to West Valley High students in the GIS Engineering certification summer program.
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Courtesy Eastern Municipal Water District
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Already more than 200 students have gone through the program since it launched last year. While local community colleges have similar Career and Technical Education programs, this is the first program of its kind targeting high schoolers in the region. Eastern Municipal hopes to expand to other area schools as well.
“Once the kids get out of the program, they're set if this is the direction they want to go,” Serrano said. “We have these students set for a job or a career for the rest of their life.”
"Once the kids get out of the program, they're set if this is the direction they want to go."
— Michelle Serrano, teacher, West Valley High School
She said the program is a gamechanger for students who don’t see themselves going to college or who are unsure of their future career path.
“We really are pushing hard for college, and that's a good push,” Serrano said. “However, we have kids who don't see themselves going to college. It's opening up an amazing path for students who otherwise may not see a job direction.”
They’re not only finding a stable career path, she said, but fulfilling roles necessary to our society, Mouawad said.
“It's working for us,” he said, “and we want to see this serve as a model for the rest of the industry.”
This week, get relationship advice, go to a game night, see a chat with the Silversun Pickups, listen to poetry at Oxy and more.
Highlights:
National Book Award winner and former Poet Laureate of Los Angeles Robin Coste Lewis visits Occidental College for poetry and conversation with Oxy Live's host, celebrated visual artist and cultural collaborator Alexandra Grant.
Channel family game night with new friends over drinks in Highland Park at a classic board game night with Cat Darling Agency and Asian American Collective.
Hometown heroes Silversun Pickups are back with a new album and tour. Dive deep with a conversation at the new Sid the Cat venue between singer Brian Aubert and producer and musician Butch Vig about the making of their new album, Tenterhooks.
It’s almost Valentine’s Day, and author Lindsay Jill Roth has the questions that will make your new (or long-term!) relationship last. Her book, Romances & Practicalities, lays out 250 questions you should ask each other to make your love a time and challenge-tested success. She’s in conversation with love, sex, and relationship therapist Dr. Laura Berman at Zibby’s in Santa Monica.
It takes an icon to know an icon. If you haven’t seen the new Harry Styles video, check it out and you’ll recognize downtown’s Westin Bonaventure in a starring role. The hotel has been in plenty of movies — including True Lies— and now it’s the stage for Styles’ music video for his new single, “Aperture.” Fiona Ng takes you behind the scenes.
Speaking of cool movie settings, Kristen Stewart bought the abandoned Highland Theatre and plans to restore it to its original grandeur. Good news for film lovers.
On tap in the music space this week, Licorice Pizza recommendations include new wave goddess Dale Bozzio and her Missing Persons at the Whisky, rock goddess Melissa Etheridge at the Canyon Club in Agoura or Roxy Music’s Phil Manzanera in conversation onstage at the Roxy — all on Wednesday. Thursday, experimental hip-hop group Clipping is at the Observatory, Atmosphere is at the Novo, UK singer-songwriter Erin LeCount plays the Roxy and Long Beach Dub All Stars & Bedouin Soundclash hit the stage at the Wayfarer. Plus, Aloe Blacc kicks off the first of four nights at the Blue Note.
Tuesday, February 10, 7:30 p.m. Cheerio Collective 5917 N. Figueroa Street, Highland Park COST: $25; MORE INFO
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Nik
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Unsplash
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Channel family game night with new friends over drinks in Highland Park at this classic board game night with Cat Darling Agency and Asian American Collective. Play Connect Four, Jenga and Uno while meeting some folks and enjoying a free drink!
Concert reading of Dogfight
Through Sunday, February 15 The Morgan-Wixson Theatre 2627 Pico Plvd., Santa Monica COST: $23; MORE INFO
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Joel Castro
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Morgan-Wixson Theatre
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Before there was The Greatest Showman, there was Dogfight. Benji Pasek and Justin Paul’s musical about a group of young Marines in San Francisco on the eve of the war in Vietnam is presented in a concert reading at Santa Monica’s Morgan-Wixson Theatre. Dogfight “explores themes of love, loss, and coming of age.”
OXY LIVE! with Robin Coste Lewis in conversation with Alexandra Grant
Tuesday, February 10, 7 p.m. Thorne Hall Thorne Road, Occidental College COST: FREE; MORE INFO
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Courtesy Oxy Arts
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National Book Award winner and former Poet Laureate of Los Angeles Robin Coste Lewis visits Occidental College for poetry and conversation with Oxy Live's host, celebrated visual artist and cultural collaborator Alexandra Grant (you may recognize her from excellent grantLove series… and her red carpet photos with beau Keanu Reeves). A book signing hosted by beloved Pasadena bookstore Octavia’s Bookshelf will follow, and attendees will have the opportunity to have their books signed by the author.
Dance at the Odyssey
Through Sunday, February 15 2055 S. Sepulveda Blvd., West L.A. COST: $28; MORE INFO
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Courtesy of Dance at the Odyssey
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Next weekend is the last weekend of Odyssey Theatre’s six-week-long Dance at the Odyssey festival, which features two world premieres: Silent Fiction from Intrepid Dance Project in Odyssey 2, and One World from choreographer Hannah Millar and her Imprints company in Odyssey 3.
Author Lindsay Jill Roth with Dr. Laura Berman
Thursday, February 12, 6 p.m. Zibby’s Bookstore 1113 Montana Ave., Santa Monica COST: FREE; MORE INFO
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Courtesy Zibby's
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It’s almost Valentine’s Day, and author Lindsay Jill Roth has the questions that will make your new (or long-term!) relationship last. Her new book, Romances & Practicalities, lays out 250 questions you should ask each other to make your love a time- and challenge-tested success — alongside Roth’s own long-distance love story and interviews with couples of all stripes. She’s in conversation with love, sex and relationship therapist Dr. Laura Berman at Zibby’s in Santa Monica.
An evening in conversation with Silversun Pickups’ Brian Aubert & Producer and Musician Butch Vig
Wednesday, February 11, 7 p.m. Sid the Cat 1022 El Centro Street,South Pasadena COST: $32.75; MORE INFO
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Sid the Cat
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Dice FM
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Hometown heroes Silversun Pickups are back with a new album and tour — catch them this week for free at Amoeba’s in-store show on Monday. Then dive deep at this conversation at the new Sid the Cat venue between singer Brian Aubert and producer and musician Butch Vg about the making of their new album, Tenterhooks. Plus, Lyndsey Parker of Licorice Pizza (friend of Best Things to Do) will moderate the chat.
Stronger Together: Nurturing Mind, Body, and Spirit
Monday, February 9, 6 p.m. to 8 p.m. St. Monica Catholic Community Grand Pavilion 725 California Ave., Santa Monica COST: FREE; MORE INFO
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Courtesy St. John's Foundation
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Recovery is an ongoing process, and the medical and spiritual communities of L.A. are reminding you they're here to help. Providence Saint John’s Health Center and St. Monica Catholic Community are marking the anniversary of the Palisades and Eaton fires with an evening of community, commemoration and healing.
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Adding even small numbers of EVs leads to measurable reductions in pollution, a study by USC researchers has found.
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Justin Sullivan
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Getty Images
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Topline:
A new study out of USC finds that even relatively small upticks in EV adoption can have a measurably positive impact on a community.
The findings: Researchers used satellites to measure actual emissions. The study, conducted between 2019 and 2023, focused on California, which has among the highest rates of EV use in the country, and nitrogen dioxide, one of the gases released during combustion, including when fossil fuels are burned. Exposure to the pollutant can contribute to heart and lung issues, or even premature death. Across nearly 1,700 ZIP codes, the analysis showed that, for every increase of 200 electric vehicles, nitrogen dioxide emissions decreased by 1.1%.
"It's remarkable": “A pretty small addition of cars at the ZIP code level led to a decline in air pollution,” said Sandrah Eckel, a public health professor at USC’s Keck School of Medicine and lead author of the study. “It’s remarkable.”
What's next: Eckel hopes that, eventually, advances in satellite technology will allow for more widespread detection of other types of emissions too, such as fine particulate matter. That could even help account for some of the potential downsides of EVs, which are heavier and could therefore kick up more tire or brake dust than their gasoline counterparts. On the whole, though, she believes the picture overwhelmingly illustrates how driving an electric car is better not just for the planet but for people.
Read on ... to learn more about the study's findings.
The logic behind electric vehicles benefiting public health has long been solid: More EVs means fewer internal combustion engines on the road and a reduction in harmful tailpipe emissions. But now researchers have confirmed, to the greatest extent yet, that this is indeed what’s actually happening on the ground. What’s more, they found that even relatively small upticks in EV adoption can have a measurably positive impact on a community.
About this article
This article originally appeared in Grist, an LAist partner newsroom.
Grist is a nonprofit, independent media organization dedicated to telling stories of climate solutions and a just future. Learn more at Grist.org. Sign up for Grist's weekly newsletter here.
Whereas previous work has largely been based on modeling, a study published in January in the journal Lancet Planetary Health used satellites to measure actual emissions. The study, conducted between 2019 and 2023, focused on California, which has among the highest rates of EV use in the country, and nitrogen dioxide, one of the gases released during combustion, including when fossil fuels are burned. Exposure to the pollutant can contribute to heart and lung issues or even premature death. Across nearly 1,700 ZIP codes, the analysis showed that for every increase of 200 electric vehicles, nitrogen dioxide emissions decreased by 1.1%.
“A pretty small addition of cars at the ZIP code level led to a decline in air pollution,” said Sandrah Eckel, a public health professor at USC’s Keck School of Medicine and lead author of the study. “It’s remarkable.”
The group had tried to establish this link using Environmental Protection Agency air monitors before, but because there are only about 100 of them in California, the results weren’t statistically significant. The data also were from 2013 through 2019, when there were fewer electric vehicles on the road. Although the satellite instrument they ultimately used only detected nitrogen dioxide, it did allow researchers to gather data for virtually the entire state, and this time the findings were clear.
“It’s making a real difference in our neighborhoods,” said Eckel, who said a methodology like theirs could be used anywhere in the world. The advent of such powerful satellites allows scientists to look at other sources of emissions, such as factories or homes too. “It’s a revolutionary approach.”
Mary Johnson, who researches environmental health at Harvard University’s T.H. Chan School of Public Health and was not involved in the study, said she’s not aware of a similar study of this size, or one that uses satellite data so extensively. “Their analysis seems sound,” she said, noting that the authors controlled for variables such as the COVID-19 pandemic and shifts toward working from home.
The results, Johnson added, “totally make sense” and align with other research in this area.
When London implemented congestion pricing in 2003, for example, it reduced traffic and emissions and increased life expectancy. That is the direction this latest research could go too.
“They didn’t take the next step and look at health data,” she said, “which I think would be interesting.”
Daniel Horton, who leads Northwestern University’s climate change research group, also sees value in this latest work.
“The results help to confirm the sort of predictions that numerical air quality modelers have been making for the past decade,” he said, adding that it could also lay the foundation for similar research. “This proof of concept paper is a great start and augurs good things to come.”
Eckel hopes that, eventually, advances in satellite technology will allow for more widespread detection of other types of emissions too, such as fine particulate matter. That could even help account for some of the potential downsides of EVs, which are heavier and could therefore kick up more tire or brake dust than their gasoline counterparts. On the whole, though, she believes the picture overwhelmingly illustrates how driving an electric car is better not just for the planet but for people.
Research like this, she says, underscores the importance of continued EV adoption, the sales of which have slumped recently, and the need to do so equitably. Although lower-income neighborhoods have historically borne the brunt of pollution from highways and traffic, they can’t always afford the relatively high cost of EVs. Eckel hopes that research like this can help guide policymakers.
“There are concerns that some of the communities that really stand to benefit the most from reductions in air pollution are also some of the communities that are really at risk of being left behind in the transition,” she said.
Previous research has shown that EVs could alleviate harms such as asthma in children, and detailed data like this latest study can help highlight both where more work needs to be done and what’s working.
“It’s really exciting that we were able to show that there were these measurable improvements in the air that we’re all breathing,” she said.
Another arguably hopeful finding was that the median increase in electric vehicle usage during the study was 272 per ZIP code.
That, Eckel says, means there is plenty of opportunity to make our air even cleaner.
Gab Chabrán
covers what's happening in food and culture for LAist.
Published February 8, 2026 8:15 PM
Bad Bunny celebrates Latino culture — and tacos — at the 60th Super Bowl
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Kathryn Riley
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Getty Images North America
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Topline:
Villa's Tacos founder Victor Villa appeared with his taco cart during Bad Bunny's Super Bowl LX halftime show, marking a rare moment of L.A. street food culture being showcased on one of the world's biggest stages.
Why it matters: The appearance was more than a cameo — it underscored the cultural significance of L.A.'s taquero tradition and immigrant entrepreneurship. Villa's journey from his grandmother's Highland Park front yard to the Super Bowl reflects the broader story of how Latino food vendors have shaped Los Angeles' culinary identity.
The backstory: Villa launched his business more than eight years ago, selling tacos from his grandmother's front yard in Highland Park. The operation has since expanded to brick-and-mortar locations in Highland Park and downtown Los Angeles, earning recognition as one of the city's standout taco spots.
What he said: "Villa's Tacos is a product of immigrants," Villa wrote on Instagram. "As a 1st generation Mexican-American born & raised in LA, it was an honor to represent my raza & all the taqueros of the world by bringing my taco cart to @badbunnypr's Super Bowl LX 2026 Halftime show."
The bigger picture: Villa dedicated the moment to immigrants who paved the way, emphasizing the performance as a celebration of Latino culture alongside Bad Bunny's shoutouts to Spanish-speaking countries worldwide.
Victor Villa brought his taco cart to Bad Bunny's Super Bowl Halftime performance.
Los Angeles residents likely know the name — Villa's Tacos is an award-winning taco business based in Highland Park. Villa began in his grandmother's front yard and now has brick-and-mortar locations in Highland Park, off Figueroa Avenue, and at Grand Park in downtown Los Angeles.
The restaurant has won L.A. Taco's Taco Madness championship three times (2021, 2022 and 2024) and earned a Michelin Bib Gourmand award for three consecutive years for its signature quesotacos.
A celebration of Latino culture
The entire performance was a celebration of Latin American culture's prominence in the United States, with Bad Bunny taking a moment to recognize Spanish-speaking countries worldwide.
Villa appeared during the opening number, "Tití me preguntó" from Bad Bunny's 2022 album "Un verano sin ti." In the sequence, Bad Bunny visits a piragüero cart — piraguas are iconic Puerto Rican shaved ice treats shaped like pyramids — before the camera pans to Villa and his cart, where Bad Bunny hands him the frozen treat. The moment bridges two beloved Latin American street food traditions: Puerto Rico's piraguas and L.A.'s taco culture.
After the performance aired, Villa took to Instagram to express his thanks and call it a historic moment, He traced his journey from selling his first taco more than eight years ago to the Super Bowl stage.
"I want to give a huge thank you to @badbunnypr for hand selecting me & allowing me to represent my people, my culture, my family & my business," Villa wrote on Instagram.
'A product of immigrants'
As a first-generation Mexican American, he dedicated the moment to the immigrants who made it possible, emphasizing that Villa's Tacos is a product of immigration and that he is honored to represent his culture and all taqueros and Latinos everywhere. The post closed with shoutouts to Puerto Rico, Mexico, and all Latinos.
In August last year, Villa appeared on a Food Friday segment on LAist 89.3's AirTalk, bringing his freshly cooked tacos for host Josie Huang.