The Brief

On a recent triple digit summer day, I made my way out to a dusty field at UC Riverside, the research center of California’s citrus universe.

The UC Riverside Citrus Research Center is lined with row after row of citrus trees. It's also home to the Climate Ready Tree test plot.

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Row after row of tangerines, oranges and pomelos —11,000 in total — baked under a heat dome. Off in the distance, wildfire smoke passed in front of the San Bernardino Mountains, which had been covered in thick snow just a few months ago.

The dusty field is just one of the many plots that the university uses to trial new trees, grow budwood for distribution and come up with solutions for devastating problems like Huanglongbing, a bacteria driven greening disease that’s threatening trees world wide.

However, I was there to check out a block of 48 trees sitting along a fence that look nothing like the thousands of citrus around them. Inconsequential at first glance, you could easily imagine them along any road in Los Angeles, but that’s kind of the point. The trees are being tested to see if they can survive our hellishly hot and dry future driven by climate change.

Where, how and why these trees are being tested

There are 12 different types of trees and four of each at the UC Riverside test plot.

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It’s a collection of 12 different species — four of each — pulled from around the world and being run through the gauntlet by the U.S. Department of Agriculture. Planted seven years ago, they were given supplemental water to help them get established, but since then they’ve had to survive on their own through record-setting heatwaves and drought years.

The Texas, or escarpment, live oak was struggling and nearly dead at the UC Riverside plot. It's reportedly doing better at a plot along the coast.

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The trees are being assessed for a number of factors including attractiveness, whether they provide good shade, how much work it takes to maintain them (less pruning means lower maintenance costs) and whether they can survive without much water.

The experiment is expected to run for at least 20 years, but visit the plot today and it's clear which trees are thriving. Surprisingly, just because a tree comes from a hot climate doesn’t mean it’s going to do well.

“What kind of choices are we going to be able to make in the future?,” said Natalie van Doorn, U.S. Forest Service scientist and co-creator of the experiment known as Climate Ready Trees . “Are we going to have enough water to make that decision that yes we want to keep watering our trees?”

If not, we’ve got to have viable candidates that we know will thrive and provide critical tree cover, which for residents, can be a matter of life or death.

Why L.A.'s hundreds of thousands of trees matter so much

Click for more details on the benefit of trees from TreeKeeper

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Trees are an absolutely critical part of our infrastructure. They have a marked impact on human and ecosystem health.

The red push pistache had one of the densest canopies at the test site.

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Trees can:

• Help drop temperatures in urban areas by as much as 45 degrees
• Reduce energy use
• Suppress noise
• Improve air quality
• Sequester water
• Help provide homes to all sorts of creatures, all according to the Environmental Protection Agency.

Which is why any sort of major threat to the more than 700,000 street trees planted across the city of L.A. is of major concern, and that's what climate change is doing.

Much of our urban forest, as it’s known, was planted over the past 100 years as the region developed. As people migrated from other parts of the country they often wanted to plant the trees that they were familiar with, though that could mean species from wetter climates.

The sweetgum tree, whose spiky seed balls you’ve likely stepped on while walking through a park, is a decent example. It’s originally from the eastern area of the country and doesn’t love drought conditions, thriving in the moist soils of the Mississippi Delta. More than 25,000 of them are planted across the city, according to a tree inventory .

A red pistache

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The flowers of the desert willow are a beautiful pink.

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“I think in general, many of urban forests contain what I would call legacy plantings that occurred after World War II, when people were building homes and moving in and planting trees. And so those trees now, maybe 40, 50, 60 years old, they were planted when water was abundant. They've grown accustomed to having water and of course they're not necessarily as well adapted to hot dry conditions,“ said Greg McPherson, retired research scientist with the U.S. Forest Service, and one of the creators of the experiment.

We were long able to satisfy a broad range of moisture requirements because we imported and dumped all but unlimited gallons of water all over our landscapes, often in an effort to keep our lawns green.

That is until this past decade, when drought and water cuts became the norm.

What happens to water-stressed trees

The flowers of the maverick mesquite.

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The flowers of the desert museum palo verde.

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Water-stressed trees are more susceptible to pathogens and insect attacks, and are, predictably, more likely to die than healthy happy trees. One only need look to the Sierra Nevada to understand how bad things can get. More than 100 million trees have died over the past decade in part due to drought stress.

There are no clear mortality estimates for LA’s urban forest over the past decade, so we can’t say whether extreme conditions have led to more tree deaths in our area. And unless we had a widespread, granular tree tracking program, it’s going to be tough to determine why an individual tree is lost.

There are hundreds of thousands of street trees across the city, and urban trees face all sorts of challenges trees in our forests don’t. Yard tools can damage them and lead to the introduction of disease, poor pruning practices can lessen tree resilience and sometimes people just cut them down because they want to redo their yards.

That said, conditions are becoming more challenging for our urban forest and we could be on the path to greater die off as a result. Longer, more sustained droughts are becoming more common, meaning less water for irrigated landscapes, and more extreme heat days mean trees require more water to survive.

While this palo blanco, originally from northern Mexico, was looking OK, another one was struggling substantially.

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Odds are we haven’t seen the worst of it. Even though we’ve had a handful of water cuts over the past decade, lawns are still green and trees still often getting supplemental irrigation.

Given how bad cuts got before this wet year, it’s easy to imagine a point where outdoor watering is limited to the point that lawns start to finally die off and the trees that rely on that same supplemental water start to die too.

“The roots of those trees are near the surface because turf is irrigated in frequent, but not heavy doses. So the water stays in the upper surface of the soil and that’s where the roots are,” McPherson said.

Depending on the variety, trees can take decades to become established and provide meaningful shade. If we’re planting something today with the expectation that it’ll survive in the lawn-less future we’re charging towards, it’s important to find species that can thrive on minimal supplemental inputs.

Our need for more resilient trees

McPherson’s efforts to find what the experiment is calling ‘climate-ready trees’ began about two decades ago, when he recognized what the existential threat of warming trends could mean for our urban forests.

The Desert Museum Palo Verde doesn't provide as much shade as the other trees, but it's nice to look at and likes hot weather.

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“I began in 1999 when I got a 18 wheeler full of desert trees from Arizona shipped up and planted them all around Sacramento and Davis, and really started evaluating their performance,” said McPherson.

Some, like the Palo Verde, even though it can thrive in hot climates, struggled.

“It just grew so fast that the top would outgrow the roots and it would blow over in our wind,” he said. “Some of them worked, some didn’t. But that led to the idea that we need to evaluate more species”

The rosewood tree had a sizable canopy that provided good shade.

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In 2015 he and van Doorn got a grant to begin trialing trees at a test site at UC Davis, and eventually along the coast in Irvine, and in the scorching hot environment of Riverside.

So which trees have been thriving?

Though the experiment still has a number of years to go, I made the trip to the Riverside plot because out of the two Southern California plots, I wanted to see which trees were doing the best in the most extreme conditions.

Many were thriving, but three stood out because they looked healthy, cast wonderful shade and were quite attractive. They’d be wonderful along any street.

The Red Push Pistache was the first to catch my eye in part because it had one of the thickest canopies and beautiful leaves. It’s originally from Arizona.

The red push pistache seemed to be thriving.

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The canopy of the rosewood, originally from India, rivaled the pistache and the Desert Willow, native to the southwest, put out gorgeous pink flowers.

A rosewood tree.

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The desert willow was thriving at the test plot.

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The Honey Mesquite, also native to the southwest, was covered in bright yellow flowers and teaming with so many bees that the whole tree appeared to vibrate.

The honey mesquite can be invasive in some environments.

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The ghost gum, a type of eucalyptus from Australia was also well established. However, because of their oil content eucalyptus tend to burn violently in wildfires. Maybe not the best choice for fire prone locations. And the tecate cypress is native to the region and looks like it could be trimmed into a hedge. It's struggled a bit at the plot.

The ghost gum is a type of eucalyptus from Australia.

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The Tecate Cypress is native to Southern California and could work well in a hedge.

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Then there were the ones that appeared to need more maintenance, like the Palo Verde, which I see planted in drought tolerant landscapes across the area. It can thrive in hot conditions, and with a bit of pruning it might’ve looked better. Problem is it didn’t provide much shade.

And, to me, the Texas Live Oak looked to be an outright failure, as they were close to dead. It's reportedly done better in cooler conditions at the team's other test site in Irvine.

A desert museum Palo Verde

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A live oak

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Go see the trees yourself

Each tree in the private research plot has a counterpart located in parks across the region, in an effort to help determine how they do when they’re not babied.

“If you were looking at reference versus park sites, the reference sites are doing better as far as survivorship and growth. In the park sites there just is a lot of variability,” said van Doorn.

If you’re curious about how they’re doing, you can actually go visit them in person.

Locations of tree testing in inland Southern California

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Coastal testing locations for trees.

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For instance, here’s a map of tree locations if you live near Woodley Park in the San Fernando Valley.

Or if you’re over on the west side, the trees might be performing completely differently at a spot like Vista Del Mar Park .

If you want a more granular look at all of the trees, the researchers issued an update three years ago here .

If you have any favorite drought tolerant trees, shoot me a note below.

The Supreme Court on Tuesday extended an order blocking full SNAP payments, amid signals that the government shutdown could soon end and food aid payments resume.

The order keeps in place at least for a few more days a chaotic situation. People who depend on the Supplemental Nutrition Assistance Program to feed their families in some states have received their full monthly allocations, while others have received nothing.

The order will expire just before midnight Thursday.

The Senate has approved a bill to end the shutdown and the House of Representatives could vote on it as early as Wednesday. Reopening the government would restart the program that helps 42 million Americans buy groceries, but it's not clear how quickly full payments would resume.

The justices chose what is effectively the path of least resistance, anticipating the federal government shutdown will end soon while avoiding any substantive legal ruling about whether lower court orders to keep full payments flowing during the shutdown are correct.

Justice Ketanji Brown Jackson was the only one of the nine justices to say she would have revived the lower court orders immediately, but didn't otherwise explain her vote. Jackson signed the initial order temporarily freezing the payments.

Beneficiaries in some states have received their full monthly allocations while in others they have received nothing. Some states have issued partial payments.

How quickly SNAP benefits could reach recipients if the government reopens would vary by state. But states and advocates say that it's easier to make full payments quickly than partial ones.

Carolyn Vega, a policy analyst at the advocacy group Share Our Strength, also said there could be some technical challenges for states that have issued partial benefits to send out the remaining amount.

An urgent need for beneficiaries

In Pennsylvania, full November benefits went out to some people on Friday. But Jim Malliard, 41, of Franklin, said he had not received anything by Monday.

Malliard is a full-time caretaker for his wife, who is blind and has had several strokes this year, and his teenage daughter, who suffered severe medical complications from surgery last year.

That stress has only been compounded by the pause in the $350 monthly SNAP payment he previously received for himself, his wife and daughter. He said he is down to $10 in his account and is relying on what's left in the pantry — mostly rice and ramen.

"It's kind of been a lot of late nights, making sure I had everything down to the penny to make sure I was right," Malliard said. "To say anxiety has been my issue for the past two weeks is putting it mildly."

The political wrangling in Washington has shocked many Americans, and some have been moved to help.

"I figure that I've spent money on dumber stuff than trying to feed other people during a manufactured famine," said Ashley Oxenford, a teacher who set out a "little food pantry" in her front yard this week for vulnerable neighbors in Carthage, New York.

SNAP has been the center of an intense fight in court

The Trump administration chose to cut off SNAP funding after October due to the shutdown. That decision sparked lawsuits and a string of swift and contradictory judicial rulings that deal with government power — and impact food access for about 1 in 8 Americans.

The administration went along with two rulings on Oct. 31 by judges who said the government must provide at least partial funding for SNAP. It eventually said recipients would get up to 65% of their regular benefits. But it balked last week when one of the judges said it must fund the program fully for November, even if that means digging into funds the government said need to be maintained in case of emergencies elsewhere.

The U.S. Supreme Court agreed to pause that order.

An appeals court said Monday that full funding should resume, and that requirement was set to kick in Tuesday night before the top court extended the order blocking full SNAP payments.

Congressional talks about reopening government

The U.S. Senate on Monday passed legislation to reopen the federal government with a plan that would include replenishing SNAP funds. Speaker Mike Johnson told members of the House to return to Washington to consider the deal a small group of Senate Democrats made with Republicans.

President Trump has not said whether he would sign it if it reaches his desk, but told reporters at the White House on Sunday that it "looks like we're getting close to the shutdown ending."

Still, the Trump administration said in a Supreme Court filing Monday that it shouldn't be up to the courts.

"The answer to this crisis is not for federal courts to reallocate resources without lawful authority," Solicitor General D. John Sauer said in the papers. "The only way to end this crisis — which the Executive is adamant to end — is for Congress to reopen the government."

After Tuesday's ruling, Attorney General Pam Bondi posted on social media: "Thank you to the Court for allowing Congress to continue its swift progress."

The coalition of cities and nonprofit groups who challenged the SNAP pause said in a court filing Tuesday that the Department of Agriculture, which administers SNAP, is to blame for the confusion.

"The chaos was sown by USDA's delays and intransigence," they said, "not by the district court's efforts to mitigate that chaos and the harm it has inflicted on families who need food."
Copyright 2025 NPR

WASHINGTON — Flight disruptions are likely to continue even after the government reopens , airlines and aviation regulators warned, as airlines canceled scores of flights on Tuesday.

The Federal Aviation Administration ordered airlines to reduce air traffic at 40 of the nation's busiest airports, with cuts still ramping up to 10% of flights by Friday. The agency has been dealing with persistent staffing shortages of air traffic controllers , who are required to work without pay during the shutdown, which is now the longest in U.S. history at 42 days and counting.

This past weekend, the FAA reported staffing shortages at dozens of facilities, prompting the agency to slow air traffic to relieve pressure on air traffic controllers who did show up to work. On Tuesday, airlines canceled more than 1,200 flights, according to the aviation tracking site FlightAware .

The situation seemed to be improving somewhat on Tuesday, according to Transportation Secretary Sean Duffy, with only a handful of FAA facilities reporting staffing shortages. But Duffy said that air traffic restrictions would remain in place until regulators are satisfied that staffing is back to normal levels.

"We're going to wait to see the data on our end before we take out the restrictions in travel," Duffy said during a press conference at Chicago's O'Hare International Airport. "But it depends on controllers coming back to work."

Even when those restrictions are lifted, it may take several days for airlines to return to normal operations.

"It's gonna take a bit to unwind," said former FAA administrator Randy Babbitt in an interview with NPR's All Things Considered.

"The airplanes are in the wrong cities and so forth. They're going to have to sort all that out as well. So a good deal of the responsibility will be the carriers getting their schedules and the aircraft and personnel back in the right positions to resume normal flying," Babbitt said.

U.S. Transportation Secretary Sean Duffy said Tuesday that airlines may have to "stop flying" if Congressional lawmakers don't vote to end the government shutdown.

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An aviation industry trade group, Airlines for America, also warned that it will take time for carriers to get back to normal.

"Airlines' reduced flight schedules cannot immediately bounce back to full capacity right after the government reopens. It will take time, and there will be residual effects for days," the group said in a statement.

The FAA argues the flight restrictions are necessary to keep the system safe while fewer air traffic controllers are showing up to work during the government shutdown. Some of those controllers have taken on second jobs during the shutdown, and many have called in sick.

But to the Trump administration's critics, the move appears to be about more than just safety. Some Democrats argue that the cuts were a political ploy to raise the pressure to end the government shutdown.

Secretary Duffy rejected that charge on Tuesday, saying the administration was responding to real concerns from pilots and mounting concerns about increasing loss of separation between aircraft.

And he warned of even bigger disruptions ahead if lawmakers do not vote to end the shutdown .

"You may find airlines that stop flying, full stop," Duffy said in Chicago. "You might have airlines that say, we're going to ground our planes, we're not going to fly anymore. That's how serious this is."
Copyright 2025 NPR

Los Angeles billboard culture is memorable, to say the least.

Our attorney billboards have inspired Hollywood . Creative STD prevention ads have reminded people about safety in weirdly direct ways. Even upside down “ Call Jacob ” and “ hate vegans ” billboards have left a confusing impression.

In a world of drab advertisements, every so often the cream of the crop rises to the top. LAist 89.3’s AirTalk unpacked some of those iconic memories recently. Here’s what listeners shared.

Billboards for music

Billboard for Beatles Abbey Road record circa 1969 on the Sunset Strip.

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Robert Landau, photographer and author of Rock ‘N’ Roll Billboards of the Sunset Strip , has spent years documenting these scenes. He says you have to be clever to plant a seed in drivers’ minds in only a few seconds.

“ We’re such a car-oriented culture that we take this advertising form of billboards and maybe raise it to an art form,” he told host Austin Cross.

One that he remembers vividly is the Beatles’ Abbey Road billboard in 1969.

He said this period was about rock ‘n’ roll music. The bands he listened to were depicted on what he called artistic, almost non-commercial billboards on the Sunset Strip.

“[It created] almost a drive through gallery at that time,” he said.

Tommy Wiseau’s “The Room”

Sam, a listener from Atwater Village, called to share one billboard that lives rent free in his mind.

“ If you traveled in Hollywood on Highland, anytime in the early two thousands,” he said, “you saw the billboard for the Tommy Wiseau movie The Room.”

The billboard was up for years and had little information about what it was actually about. A black-and-white Wiseau stared down passersby next to directions to call a number on the billboard to “RSVP.” (To the movie? A meeting? Who knew.)

It became a sort of local mystery while the movie reached cult-like status .

The Angelyne campaigns

Another one L.A. won’t soon forget is model Angelyne’s plethora of billboards that have dotted the skyline for decades. Yes, decades .

Michael in Studio City said he’s always found the billboard queen entertaining. They’re known for being bright pink and showing Angelyne, usually in a suggestive or sultry pose, alongside just her name.

“I was confused about what necessarily she was going for other than notoriety,” he said.

We could go on forever about L.A.’s hodgepodge of excellent billboards. What’s one that sticks out to you? Send your thoughts to chernandez@laist.com and we may follow up.

This  story was originally published by Boyle Heights Beat on Tuesday.

Residents of Boyle Heights and East Los Angeles are invited to join Metro’s community working group to provide input on a series of projects aimed at decreasing pollution and improving streets for pedestrians and cyclists.

The effort is part of the Long Beach-East Los Angeles Corridor Mobility Investment Plan, a $4 billion initiative that includes more than 200 projects and 15 programs that prioritize transit, walking, biking, safety and cleaner air.

It spans 18 cities and three unincorporated communities from Long Beach to East LA along the I-710 corridor. The plan includes an initial $743 million from the previously canceled I-710 freeway expansion project.

Who can join

The working group will be made up of 30 people who will represent their community by serving a two-year term. Working group members may be eligible for compensation at a rate of $150 per meeting, earning up to $4,300 per Metro fiscal year, according to Metro .

“We want residents, community members, family members, students, mothers, fathers, grandmas that can come and represent their community … to help us set the priorities,” said Patrick Chandler, a Metro spokesperson.

Chandler said the hope is working group members then can inform their neighbors, “so they are aware of what their concerns are.”

“We know that especially for Boyle Heights, with the East LA interchange … we want to go in a direction that is equitable, that is community driven,” he added.

How to apply

Applications are due Nov. 14 and can be completed online in Spanish or English . To request a paper application, you can email 710corridor@metro.net. Selected members will be notified in December.

Frequently asked questions about the project are available in English and Spanish . To learn more, visit: metro.net/lb-ela-cp-hub.