The Brief

One of the world’s most high-tech indoor vertical farms is right here in Southern California, in Compton.

I headed there to find out more about what role indoor farming may play in the future of food. As increasingly extreme weather driven by human-caused pollution in the atmosphere makes it harder — if not impossible — to farm outside in formerly high-producing regions, could farming indoors be part of the solution?

I admit I’m pretty skeptical of this high-tech farming. How practical is it? What are the tradeoffs? And how much does this farm really benefit Compton?

Those were the questions I wanted to answer as I pulled into the parking lot of a clean white warehouse in north central Compton. The formerly empty warehouse is across from a neighborhood and next to a larger industrial building and yard full of big-rig trucks.

Inside, is the flagship commercial-scale farm developed by San Francisco-based startup Plenty. It officially opened last May and is the West Coast’s largest indoor vertical farm.

When I walk in I’m greeted by cool air conditioning and Erin Santy, the company’s media liaison. She walks me upstairs to the mezzanine. From there, I can see huge robot arms moving tall, thin towers of greens.

“When you say farming, this is not what I think of, but how cool that it can be?” Santy said. “Fifty years from now, what will people think of?”

The indoor vertical farm in Compton is highly automated.

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Why farm indoors? 

Within 100,000 square feet, the farm can grow some four million pounds of spinach, kale, spring mix and arugula every year. That amount adds up to about 16 million of those packages of greens we see at the grocery store. And it's produced within a much smaller area than what's need to grow the same amount outside.

They sell at Whole Foods, Bristol Farms, Gelson’s and most Walmarts in Southern California. They just launched a partnership with 7/11 to sell salads there too.

“We want to be able to deliver a locally grown fresh product and part of that is how do we get it closer to the people who are eating it?” Santy said. “Some of that is about growing in a more urban and dense area like Compton.”

An aerial view of the indoor farm in Compton.

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She said the prices are on par with organic for now, since it’s so expensive to build these farms and they’re not common. But she said the prices don’t fluctuate like conventionally grown greens because they’re not affected by weather volatility or supply chain disruptions.

One of the biggest perks of indoor farming is that it can use as much as 98% less water than conventional farming, said researcher Shamim Ahamed, who studies advanced farming techniques at UC Davis. But he said the biggest drawback is that it also uses a lot of electricity. That’s because they need to use artificial light to grow the plants as well as keep specific temperatures inside.

“That's basically the prime reason for having a high carbon footprint,” Ahamed told LAist.

He said because the power grid is getting cleaner overall, that footprint will continue to go down. And there are lots of ways these indoor farms can use energy really efficiently or generate their own cleaner energy on site, Ahamed said.

Erin Santy, media liaison for the startup Plenty.

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Santy said Plenty used solar to generate their energy on their far smaller pilot farm in Northern California, but she said they didn't go that route for their Compton site because they don't have the space for the number of panels they'd need. She said the amount of electricity generated by putting panels on their rooftop would be essentially negligible and didn't pencil out. She added the current mix they're paying for from the power grid is currently about 40% renewable sources.

And, Ahamed pointed out, conventional agriculture also has a huge carbon footprint. Mostly due to land use changes, livestock and soil depletion, large-scale farming accounts for about a quarter of human-caused global greenhouse gas emissions and about 10% of the U.S.’ total greenhouse gas emissions.

Plenty's indoor vertical farm in Compton is in a formerly empty warehouse.

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But there are limits, at least right now, to what food can be farmed indoors in this way. Ahamed said indoor vertical farming works for certain crops, such as leafy greens, strawberries and tomatoes — crops that are also highly vulnerable to the impacts of climate change, he said.

While Ahamed said indoor farming can’t completely replace farming outdoors, he said it does play a role in the future of our food.

How the farm works

Before going inside Plenty’s Compton farm, we have to get dressed in full protective gear and sanitize everything.

The greens never get touched by human hands: The environment is kept so clean they don’t need pesticides. That means they also don’t need to be washed before being eaten, so the greens don’t get that “triple wash” like many we buy at the grocery store.

Machines place seeds in a soil tray at Plenty's indoor farm in Compton.

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That, plus the fact they’re grown so much closer to the stores where they end up, means Plenty’s greens have a longer shelf life, staying fresh for as many as 21 days, Santy said.

Once we’re fully suited up, we head inside.

Seed trays getting irrigated with a precise amount of water in the seeding room.

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First stop is the seeding room. Seed trays run along a conveyor belt, where machines place a precise number of seeds into the soil, then squirt just enough water and nutrients on top.

Then we head into a brightly lit room full of colorful lights called the propagation room. I can’t take pictures — the specific combination of artificial light in here is proprietary because it’s the company’s secret sauce for helping the plants grow faster. They’re ready to harvest in around 30 days, instead of the 60 to 90 it would take outside in the field, Santy said.

After a couple weeks in this room, the baby plants are routed on a conveyor belt to a series of robots that pull them from the trays and place them into growing towers that are several stories high.

“Imagine how delicate the fingers of that robot have to be to lift it without ripping the plant or tearing the roots,” Santy said.

Robot "fingers" pluck plants from trays and place them in a growing tower, where they'll eventually be ready to harvest.

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Then, the towers full of plants are transferred by a much larger robot arm to another conveyor system that moves them into the final growing room.

“When you're able to stand in front of a 30 foot wall of lettuce, that’s when it gets really cool,” said Yatae Lewis, the farm’s site operations manager. “I tell people I work at Willy Wonka's Chocolate Factory.”

The light in here is super powerful and also proprietary. This is where the plants stay for a couple weeks until they’re ready for harvest. Stories of lush purple and green spring mix and kale and spinach tower above me.

And it’s humid. All the water the plants in this room respirate, or essentially sweat out, is recycled. That helps the farm use about 90% less water than conventional growing, Santy said.

The final growing room. The light is proprietary, which is why LAist couldn't take its own photos. That artificial light helps the plants grow about twice as fast as they would in the field.

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Leafy greens grow inside a high-tech indoor vertical farm based in Compton and developed by San Francisco-based startup Plenty.

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What the farm means for Compton

Farming is actually nothing new to Compton. In the early 1900s, Compton was an agricultural hub. Compton Creek, a major tributary to the L.A. River, made for a reliable water source and rich soil. Southern California sunshine made for ideal growing conditions.

Compton’s Mayor Emma Sharif said the Plenty indoor farm is a way to bring that legacy back in a new way.

“This isn't just a nod to our past. It's a bold step into the future of farming,” she told LAist.

A robot "arm" that moves the towers of greens onto a conveyer belt that takes them to the final growing room, where they'll be ready to harvest after a couple weeks.

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And Sharif said a big reason she supported the company coming to Compton was that it brings needed jobs. Part of the city’s agreement with Plenty is that at least a third of the farm’s 70 employees have to be from Compton. As of now about 31% are, said Yatae Lewis, the farm’s site operations manager.

Lewis grew up in Long Beach and has lived in Compton for 20 years.

Yatae Lewis is the site operations manager at Plenty's indoor farm in Compton.

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“Compton is known for so many things,” Lewis said. “Indoor farming is absolutely not one of them. So being a part of changing the narrative of Compton was something that I absolutely jumped at.”

He’s worked here for three years, and watched the farm go from empty warehouse to indoor growing powerhouse. He said that while the number of jobs may not be high, the quality is.

“We want jobs, and not only jobs, we want good jobs,” Lewis said. “And not only good jobs, we have jobs that we can brag about. If we can do that for 30% of the workforce, that's amazing.”

Yatae Lewis holds leafy greens in a photo from 2022, before Plenty officially launched its flagship commercial indoor farm in Compton.

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Lewis said the jobs for Compton locals range from field techs to growers to managers. The majority of roles in the farm have no educational requirements and they offer competitive pay as well as benefits, Santy said. Lewis said one of their Compton employees was able to afford her dream of traveling to South Korea for a K-pop concert recently.

“If we have an individual that now has a passport and can see the world and bring that back to Compton because they work at Plenty, that's what we're rooting for,” Lewis said.

Lewis, who also serves as Plenty’s community liaison, said the company has partnered with the Compton Run Club to co-host events and fundraisers, and they have partnerships with seven local middle schools to highlight STEM education.

“I have a 13-year-old, and he's into robots, he's into engineering, he's into computer coding,” Lewis said. “When I bring him to a bring-your-kid-to-work day and he sees the robots and he talks to the engineers, his mind is blown. It's very humbling and encouraging that my son's dream job can be five minutes away in the city that he lives in.”

A Trump administration official on Friday signaled a potential rollback of the racial and ethnic categories approved for the 2030 census and other future federal government forms.

Supporters of those categories fear that any last-minute modifications to the U.S. government's standards for data about race and ethnicity could hurt the accuracy of census data and other future statistics used for redrawing voting districts, enforcing civil rights protections and guiding policymaking.

Those standards were last revised in 2024 during the Biden administration, after Census Bureau research and public discussion.

A White House agency at the time approved, among other changes, new checkboxes for "Middle Eastern or North African" and "Hispanic or Latino" under a reformatted question that asks survey participants: "What is your race and/or ethnicity?" The revisions also require the federal government to stop automatically categorizing people who identify with Middle Eastern or North African groups as white.

But at a Friday meeting of the Council of Professional Associations on Federal Statistics in Washington, D.C., the chief statistician within the White House's Office of Management and Budget revealed that the Trump administration has started a new review of those standards and how the 2024 revisions were approved.

"We're still at the very beginning of a review. And this, again, is not prejudging any particular outcome. I think we just wanted to be able to take a look at the process and decide where we wanted to end up on a number of these questions," said Mark Calabria. "I've certainly heard a wide range of views within the administration. So it's just premature to say where we'll end up."

OMB's press office did not immediately respond to NPR's request for comment.

Calabria's comments mark the first public confirmation that Trump officials are considering the possibility of not using the latest racial and ethnic category changes and other revisions. They come amid the administration's attack on diversity, equity and inclusion programs, a push to stop producing data that could protect the rights of transgender people and threats to the reliability of federal statistics.

In September, OMB said those Biden-era revisions "continue to be in effect" when it announced a six-month extension to the 2029 deadline for federal agencies to follow the new standards when collecting data on race and ethnicity.

Calabria said the delay gave agencies more time to implement the changes "while we review."

The first Trump administration stalled the process for revising the racial and ethnic data standards in time for the 2020 census.

The "Project 2025" policy agenda released by The Heritage Foundation, the conservative, D.C.-based think tank, called for a Republican administration to "thoroughly review any changes" to census race and ethnicity questions because of "concerns among conservatives that the data under Biden Administration proposals could be skewed to bolster progressive political agendas."

Advocates of the changes, however, see the new categories and other revisions as long-needed updates to better reflect people's identities.

"At stake is a more accurate and deeper understanding of the communities that comprise our country," says Meeta Anand, senior director of census and data equity at the Leadership Conference on Civil and Human Rights. "I am not concerned if it's reviewed in an honest attempt to understand what the process was. I am concerned if it's for a predetermined outcome that would be to ignore the entire process that was done in a very transparent manner."

Edited by Benjamin Swasey
Copyright 2025 NPR

A large black bear that was relocated earlier this year after being found under a house in Altadena is up to his old tricks again.

The bear, nicknamed Barry by the neighbors, was found last week under a different Altadena home, and wildlife officials are using a caramel- and cherry-scented lure to entice the roughly 550-pound male bear out of his hiding spot.

So far, they’ve been unsuccessful.

Cort Klopping, information specialist with the California Department of Fish and Wildlife, told LAist the bear seems to be spooked by increased activity around the home, including media crews outside and helicopters overhead.

“It seems as though in this case, this bear has found this poor guy's crawlspace as a comfortable, safe-seeming, warm enclosure for denning purposes,” he said.

He said the space is “somewhere for this bear to kind of hang its hat when it's relaxing.”

How the bear returned

Wildlife officials can tell it’s the same bear who was lured out from under an Altadena house after the Eaton Fire because of the tag number on his ear.

The bear was trapped and relocated about 10 miles away to the Angeles National Forest in January, but Klopping said he’s been back in the Altadena area for around five months.

The male bear after it was removed from under an Altadena home earlier this year.

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The bear spooked a SoCal Gas crew who stopped by for repairs after the Eaton Fire in January.

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The Department of Fish and Wildlife fitted the bear with a temporary GPS collar so officials could keep track of it. The collar came off a couple months later while the animal still was living in the forest.

The bear is believed to have been spotted around the home last Tuesday, Klopping said, and the owner reached out to wildlife officials a few days later for help.

“I’ve seen pictures of this bear, and I’m shocked to be under that house,” homeowner Ken Johnson told LAist media partner CBS LA.

Officials said they were hopeful the bear would move along on its own. They encouraged the homeowner to set up a camera on the crawlspace and line the area with ammonia soaked-rags or a motion-activated wildlife sprinkler system to deter the bear from returning, Klopping said.

“These are all actions that would not harm the bear, not harm people, but they would make it less comfortable for the bear to be there,” he said.

But the bear stayed put.

“Right now, it seems like it's stressed,” Klopping said. “It seems like it's scared, and therefore, it's not really wanting to leave the security of where it is at the moment.”

The hope ahead

A pair of wildlife officials stopped by the home Thursday to set up the sweet-smelling lure and camera so the department can keep an eye on the bear’s activity remotely.

Barry didn’t take the bait immediately, Klopping said, but officials are hopeful the animal will feel more comfortable leaving the crawlspace once activity around the home dies down a bit.

Klopping also is warning people in the area to secure access points on their property so the bear just doesn’t move in there next.

“If I were in that neighborhood, I would be doing everything in my power to make sure that my crawlspaces would not be accessible,” he said, including covering it with something stronger than the wire mesh the bear got through before.

Bears also are extremely food motivated, and Klopping said they can smell your leftover chicken in trash cans on the curb from 5 miles away.

He encouraged residents to be mindful of trash that could be an easy meal for wildlife, as well as pet food and hummingbird feeders, which Klopping said biologists have seen bears drink “like a soda.”

You can find tips on how to handle a bear in your backyard here and resources from the California Department of Fish and Wildlife here.

There’s a new way you can track pollution in your neighborhood.

The SoCal Clean Manufacturing Coalition, a climate advocacy group, has released a map with the locations of more than 1,800 fossil fuel-burning industrial boilers across Los Angeles, Orange, San Bernardino and Riverside counties. Many are at universities and hospitals, as well as some apartment complexes like the Park La Brea apartments in the Miracle Mile.

The map is part of an effort to push the South Coast Air Quality Management District, which regulates our air quality, to pass rules to require these large boilers to be phased out.

Why do these boilers matter?

Industrial boilers aren’t exactly the poster child of pollution, but they do play a role in Southern California. Boilers come in different sizes, and although there are electric types, many still burn fossil fuels to generate hot water, steam and, as a byproduct, nitrogen oxide.

South Coast AQMD says that makes it a source of pollutants. Nitrogen oxide contributors are not only a problem for smog and respiratory issues but also for the agency’s effort to meet federal air quality standards.

That’s why last year the agency approved new requirements for certain buildings to use zero-emission water heaters and boilers when they need replacement.

Teresa Cheng,  California director for Industrious Labs, a coalition member focused on creating cleaner industries, says these rules were for smaller “baby boilers” and that the coalition wants to see that applied to larger ones, which are covered under the agency’s 1146 and 1146.1 rule.

The push has caused concern in the gas industry. The California Fuels and Convenience Alliance, which represents small fuel retailers and industry suppliers, says boilers are essential in a wide range of manufacturing facilities that need high heat, like food processing, fuel production and more.

“CFCA is deeply concerned that requiring industrial facilities to abandon gas-fired boilers at the end of their useful life before the market is technologically or economically ready will still have severe consequences for manufacturers, workers and consumers,” the alliance said in a statement.

The organization says many facilities already have invested in “ultra-low” nitrogen oxide technology and that requiring a switch to zero-emissions equipment could destabilize the industry because of costs.

See the map

The map includes the number of boilers in each place, including how many aging units, and their permitted heating capacity. (That metric essentially correlates with how much pollution it can release.)

Cheng says the map is being shared to make the “invisible visible” so residents can know what’s around them. Most boilers are in communities that already deal with environmental pollution problems.

Boilers are even close to K-12 schools, like Glendale’s Herbert Hoover High School, which has its own.

“ These boilers have a very long lifeline,” she said. “If the air district doesn't pass zero-emissions rules for these boilers, we actually risk locking in decades more of pollution.”