The Brief

Within the sprawling metropolis of Los Angeles, not far from West Hollywood and Beverly Hills, paleontologists are hard at work sorting through one of the richest collections of ice age fossils in the world.

Today, the La Brea Tar Pits, a public park and museum, lie between shopping centers and apartment buildings. But the sticky, black asphalt that fills the pits was oozing up from the ground long before people turned this land into a bustling city.

Across millennia, the tar pits captured over ten thousand mammals, creating a remarkably detailed record of the area’s natural history. But not every creature present in the asphalt is stuck in the past.

Any tourist who goes to watch scientists dig up the bones of saber-toothed cats and dire wolves should also keep an eye out for the plucky survivor whose ancestors likely watched those big mammals die: the petroleum fly.

There’s still a lot of mystery surrounding the petroleum fly, but one thing is clear: It has figured out how to make the most of a bad situation. Pools of asphalt are hell for most animals, but petroleum flies have turned them into a bountiful habitat.

“That’s their personal paradise,” says entomologist Martin Hauser, with the California Department of Food and Agriculture. “They have no competition in there because no one else can deal with it.”

Adult petroleum flies are fairly unassuming. They’re small and flecked like fruit flies. Though scientists don’t know exactly how, they are able to skate – and mate – on the asphalt pools. Their feet don’t get stuck, but if any other body part touches the sticky liquid, they’re out of luck.

An adult petroleum fly walks on top of the sticky tar pits without getting stuck.

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The translucent maggots, on the other hand, are truly in their element – they can fully submerge in the dark, viscous liquid.

“This is something that kills everything else,” says Kenneth Nickerson, a microbiologist at the University of Nebraska-Lincoln, who has studied petroleum flies.

Pools of natural asphalt form when petroleum from subterranean reservoirs seeps out of the ground. Most of the small molecules that make petroleum toxic to us quickly evaporate, but the asphalt that’s left behind is incredibly sticky.

Few animals that wade into a pool of asphalt manage to extricate themselves from it. In fact, the thick liquid keeps holding on even after an animal has succumbed to exhaustion or exposure, and its body has wasted away to bones. That’s why asphalt deposits around the world are particularly interesting to paleontologists.

“It just so happens that this extremophile organism lives in the medium that I dig fossils out of,” says Sean Campbell, a paleontologist with the Natural History Museums of Los Angeles County, which include the La Brea Tar Pits.

Scientists have also found petroleum flies in oil fields in Santa Paula and Ojai, south of Santa Barbara, as well as in seeps in Cuba and Trinidad, in the Caribbean.

By studying the flies in the La Brea Tar Pits, researchers are beginning to understand how their maggots are able to survive in this environment.

“They have multiple tricks,” says Hauser.

When Hauser examined petroleum fly maggots under a microscope, he noticed they’re a little more prickly than other fly larvae. He believes their rough skin keeps the asphalt away from their bodies.

Surprisingly, the maggots actually need a bit of asphalt on their backside to survive.

“They would dry out if they can’t get in contact with oil,” says Hauser.

As it turns out, the asphalt is also an essential moisturizer. While most insects are covered in a waxy layer that keeps moisture in, petroleum flies seem to lack this protection – likely because wax dissolves in asphalt.

As they swim in the asphalt, maggots breathe through snorkel-like tubes on their rear ends, ringed with hairs that keep them afloat.

“When the snorkel breaks the surface, the hairs just fold out,” says Hauser. “It’s a little bit like an umbrella.”

A crane fly gets stuck in the tar pits.

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Maggots feed on insects that have been caught in the asphalt. Dragonflies and other insects that spend their lives near ponds often mistake shiny pools of asphalt for water. When they try to skim the surface or land on it, the sticky substance pulls them down, into the maggots’ domain. Without snorkels like the ones petroleum fly larvae breathe through, those other insects quickly drown.

Petroleum fly larvae aren’t picky: They’ll turn any dying insect into a meal. When the maggots sense an insect sinking into their home, they wriggle over to it. Then, they scrape at its hard exoskeleton with their two black mouth hooks, probing for an exposed bit of soft tissue. When they find one, they make a hole and crawl inside the dying insect’s body.

A hungry petroleum fly larva inspects and eats an adult petroleum fly that got stuck in the tar pits.

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As they eat, petroleum fly maggots incidentally consume some asphalt. You can see it darkening their digestive tract through their translucent skin. It looks like their guts are filled with the black substance.

“That’s one of the big mysteries,” says Hauser. “How they can deal with this.”

Humans can handle eating a little bit of asphalt – medieval Persian doctors used to prescribe it for stomach ulcers. But the stuff would overwhelm our systems if we ate as much as a petroleum fly maggot. And even a little bit would expose us to carcinogens that short-lived insects don’t have to worry about.

Petroleum fly larvae eat asphalt regularly enough that scientists once thought they derived nourishment from it. Now, they know that’s not the case.

But it’s apparent that something happens to the asphalt as it passes through a maggot’s digestive tract. Between the mouth and the anus, the dark, viscous substance thins out and clears up. Whatever is responsible for that process could point to a better method for cleaning up oil spills.

That possibility piqued the interest of University of Nebraska-Lincoln microbiologist Nickerson. He had a hunch that bacteria inside the maggots might be breaking the asphalt down. So, he asked a paleontologist to collect some petroleum fly larvae from the La Brea Tar Pits and ship them to his lab in Lincoln.

First, Nickerson’s team identified the types of bacteria growing inside the maggots’ guts. Then, they tried growing the microorganisms in Petri dishes.

“Our goal at the time was to find microbes that would be good at degrading some of these complex hydrocarbons that you would find in the tar,” says Nickerson.

None of the bacteria that grew on Petri dishes proved capable of that feat. But Nickerson’s team found plenty of microbes that they couldn’t grow at the time, and he hopes more scientists will investigate them in the future.

Until then, the petroleum fly larva will continue to live in the present, swimming contentedly in its asphalt paradise.

Some government funding streams for L.A. County’s public health system are drying up, and officials are turning to private philanthropy to fill the gap.

A new privately funded foundation launched Thursday to strengthen public health services after $50 million in federal, state and local funding cuts to the county’s Department of Public Health since early last year.

“It is really a hard day for our community when we have to ask for private donations to fund a public good, but unfortunately, we've lost too much money to not take this important step,” said Public Health Director Barbara Ferrer.

In February, the county’s Public Health Department closed seven clinics, with six remaining open. About half of the patients seen in those clinics are uninsured, according to county officials. The department also cut hundreds of staff positions.

Ferrer is on the board of the new foundation, The Fund for Advancing Public Health LA, which held its first meeting Thursday.

She said the fund will help the county maintain its basic public health infrastructure, including disease prevention, health promotion, environmental health, and emergency response efforts.

Other board members include several health insurance executives, as well as actors Sean Penn and Danny Trejo. Board member Saree Kayne of the R&S Kayne Foundation pledged $150,000 to the fund Thursday. Kayne said she hopes the donation encourages others to give.

The foundation aims to raise $2 million this year.

More cuts expected

L.A. County Supervisor Holly Mitchell said it’s crucial to have an alternative funding stream to protect services for the county's most vulnerable residents.

“We are saving public health,” Mitchell said. “This fund represents a new approach, one that brings together government philanthropy in the private sector to invest in community-based solutions, protect vulnerable populations, and strengthen our public health infrastructure.”

Officials say more public health cuts are coming, through the federal budget law known as the "Big Beautiful Bill," which slashes funding for Medi-Cal.

The county Department of Public Health anticipates losing up to $300 million in revenue over the next three years because of the federal budget bill and other potential funding freezes. Federal funding accounts for almost 50% of the public health budget, according to county officials.

Mitchell also led an effort to put a half-percent county sales tax increase to fund public health on the June ballot.

If approved by voters, that proposal, known as Measure ER, is expected to raise about $1 billion a year for county safety net health services, including about $100 million for the public health department.

Board members

The Fund for Advancing Public Health LA announced its founding board of directors, which includes:

• Dr. Barbara Ferrer, LA County Department of Public Health director
• Debbie I. Chang, Blue Shield of California Foundation CEO
• Sean Penn, actor and co-founder of Community Organized Relief Effort (CORE)
• Martha Santana-Chin, LA Care Health Plan CEO
• Saree Kayne, R&S Kayne Foundation CEO
• Danny Trejo, actor and restaurateur
• Jarrett Barrios, an executive at the American Red Cross
• Dr. Deborah Prothrow-Stith, Charles R. Drew University College of Medicine Dean
• Kristin McCowan, an executive at the Los Angeles Dodgers

The Rose Bowl in Pasadena may be a centenarian, but it’s holding up pretty well as it continues to host events on its way to a starring role in the LA28 Olympics.

But before it can host the soccer final, it needs fixes, especially to the infrastructure serving the bathrooms and drinking fountains. Fears of a toilet backup while in the world’s spotlight led Rep. Laura Friedman to seek federal funds for upgrades. On Thursday she announced she secured just over $1 million.

“Two years from now, athletes around the world are going to compete for gold right where we are standing. This is not the time to find out whether or not these pipes are up to the task,” Friedman said.

The planned work, she added, will lead to improved water flow capacity and water drainage, eliminating the risk of backups and emergency maintenance.

The funds came from the House of Representatives Interior and Environment subcommittee. The fixes, an official said, will be completed by the LA28 Olympics.

The funds, however, are a drop in the bucket when it comes to what’s needed to make needed improvements to the Pasadena venue.

Officials, including (left to right) Rose Bowl Legacy Foundation President Dedan Brozino, Deputy Fire Chief of the City of Pasadena Tim Sell, Congresswoman Laura Friedman, and Rose Bowl Stadium CEO Jens Weiden announced infrastructure funding for the 103-year old Rose Bowl.

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“Over the  next 20 years there's about $200 million that we need to put in and that's everything from updating light fixtures to updating gas, water, wastewater lines, etc.,” said Dedan Brozino,  president of the Rose Bowl Legacy Foundation, the nonprofit that supports the Rose Bowl stadium's preservation and enhancement.

Getting venues ready will be expensive

The money is a much-needed win at a time when elected officials in city, county, state and federal offices have been struggling to find the funds to get L.A.-area venues ready for the global Olympic stage in two years.

The entrance to a men's bathroom at the Rose Bowl.

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A $360 million proposal to spruce up asphalt in parking lots around Exposition Park won’t be done in time for the Olympics, as originally planned. Meanwhile, just up the street, there’s concern that a $2.6 billion expansion of the L.A. Convention Center, which is hosting Olympic wrestling, fencing and judo in 2028 won’t be ready for the Olympics.

Additionally, to save money, LA28 organizers moved Olympic diving to the Rose Bowl complex last year because it has two Olympic-sized pools, while the Exposition Park complex doesn't and would need expensive upgrades.

Topline:

About the chick: The chick hatched March 14. The zoo opened its Cape vulture enclosure in February 2025 after years of planning to encourage the birds to roost and nest, welcoming a new breeding pair that year. When it grows to be an adult, it’ll have a wingspan of 8 1/2 feet.

About the enclosure: The L.A. Zoo said it spent years developing the vulture habitat, which was designed to mimic the vultures’ natural environment in South Africa. Dominick Dorsa II, the zoo’s director of animal care, said in a statement the successful hatching is “a testament to the design and construction” of the habitat.

How to see the chick: You can’t for the time being. Zoo officials are keeping it away from visitors until the chick matures, though you can still see adult Cape vultures at the zoo’s enclosure.

Though visitors will have to wait until the chick matures to see it in the enclosure, you can still take in the impressive eight and a half foot wingspan of the adult Cape vultures.

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What zoo officials are saying: “Welcoming a Cape vulture chick is a thrilling moment for our team and a beacon of hope for African vultures,” the L.A. Zoo’s curator of birds Rose Legato said in a statement. “Vultures are one of nature's most misunderstood marvels, and I cannot wait for our guests to eventually watch this chick grow and learn just how vital they are to our ecosystems.”

About the species: Cape vultures are listed as a vulnerable species due to human activities and encroachment. According to the L.A. Zoo, African vultures are more closely related to eagles and hawks than vultures native to the Americas, like the California condors that just hatched last year at the L.A. Zoo.

This story first appeared on The LA Local.

What should have been a celebration for formerly incarcerated youth completing a reentry program at the Boyle Heights Arts Conservatory (BHAC) last week instead ended with seven students and two staff members detained by the Los Angeles Police Department, according to witnesses. 

Now, nearly a week later, BHAC staff and city officials are demanding answers from the LAPD, with some accusing officers of racial profiling. 

According to the LAPD, officers observed a large group gathered on the corner of Cesar E. Chavez Avenue and Mott Street around 4:16 p.m. on March 26. Authorities then requested backup for what they described as “a large group surrounding officers,” LAPD Public Information Officer Tony Im said. 

The group, classified by police as an “aggressive gang group,” consisted of seven 18-year-old students from the BHAC’s Bridge Academy Movement (BAM) program and two BHAC staff members.

The BAM program pays formerly incarcerated youth to complete 200-250 hours in media and visual arts training to prepare them for creative careers. That day, students were set to showcase their work at the BAM program graduation for families and community members. 

Rene Weber, a teaching artist at the BHAC, had been with the students setting up for the ceremony minutes before the incident occurred. 

According to Weber, the students had gone to coffee across the street at Milpa Kitchen as they often did, when staff were alerted that they were being detained. 

Weber said he arrived to find students and a staff member pressed against the wall in handcuffs. 

Video from the scene, taken by a staff member at the BHAC, shows multiple officers surrounding the group. At one point, an officer orders a person to “get on the wall” and displays a stun gun.  

“No, none of that, these are kids right here,” the staff member replies.

Another staff member, Teotl Veliz, recorded a large police response.  

“I counted 12 cop cars, that’s at least 25 cops, and they had a helicopter,” Veliz said. “It was just so comedic, tragically comedic, that it was on their graduation day too.”

Officers established a perimeter with yellow tape along the side of Ashley’s Beauty Salon as local business owners and witnesses gathered around the students. 

“I was just incredibly disappointed in LAPD… because it became so apparent to everybody, all at the same time, that it was racial profiling and nothing else,” Veliz said.

Weber said officers gave shifting explanations for the stop at the scene, including blocking the sidewalk and possible underage vaping. After Weber told the officers that all of the students were 18, they said they would investigate whether the group had any gang affiliation. 

Police have not responded to questions about what led officers to believe that the group was gang-affiliated. 

Weber recalled pleading with the officers to let the group go and explaining to them that they worked across the street. Community members and local business owners also stepped in to vouch for the students. 

“Our job is to help them gain a new perspective on life,” Weber said. “They’re coming out of juvenile detention and they’re turning their lives around. We can do our part in keeping them off the streets and keeping them doing better but what does it mean if they’re going to be profiled and treated exactly the same way?” 

In total, seven 18-year-old students and two staff members were detained. BHAC staff said one student and one staff member were taken to Hollenbeck Community Police Station and released less than two hours later after advocacy from community members and Councilmember Ysabel Jurado.

The incident ultimately resulted in an infraction for smoking a cannabis e-vape on a public sidewalk, according to a photo of the infraction shared with the Beat. LAPD did not provide details about the people taken to Hollenbeck Station or the infraction. 

The graduation ceremony was cancelled that night and is expected to be rescheduled in April. 

“Graduation should be a moment of pride and possibility — not fear,” Jurado said in a statement. “I’m seeking answers about what occurred, and this underscores the need for stronger relationships between law enforcement and community organizations so moments like these are protected, not disrupted.”

Carmelita Ramirez‑Sanchez, the conservatory’s executive director, said she was grateful to the community and Jurado for advocating for the students’ release. Jurado met her at Hollenbeck Station within 20 minutes of being alerted to the incident, she said. 

“They had store owners, señoras, barbers, that ran out and were trying to explain to the police who our kids were,” Ramirez‑Sanchez said. 

Still, she said the incident tarnished what should have been a joyous celebration.

“I imagine that what this does is derail this entire idea that you can be an active participant in your own restorative growth,” she said.