The Brief

A construction project at San Pedro High School has revealed a treasure trove of marine fossils from L.A.’s prehistoric past.

The most ancient fossils in the collection are thought to be as many as 9 million years old and date to a time when the Palos Verdes Peninsula was covered by ocean.

Scientists are still identifying new species in the tons of material excavated from the site, but have already unearthed pieces of a saber-toothed salmon, sea turtles, whales, dolphins, clams, birds and teeth from the largest shark to ever live.

“It's the entire ecosystem from an age that's gone,” said Wayne Bischoff, who helped oversee the excavation. “We have all this evidence to help future researchers put together what an entire ecology looked like nine million years ago. That's really rare.”

‘A once-in-a-century opportunity’

San Pedro High School opened in 1903 and debuted the Leland Street campus in 1937. The district began a $260 million, bond-funded construction and renovation project in 2021.

A vertebrae fossil of extinct dolphin species.

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Wayne Bischoff, Envicom Corporation

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Courtesy Los Angeles Unified School District

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The jaw bone of an extinct saber-tooth salmon which had fangs that extended from its mouth.

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Wayne Bischoff, Envicom Corporation

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Courtesy Los Angeles Unified School District

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The rib bone from an extinct dolphin species.

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Wayne Bischoff, Envicom Corporation

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Courtesy Los Angeles Unified School District

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The Palos Verdes Peninsula has a rich paleontological history. LAUSD hired Envicom Corporation, where Bischoff oversees cultural resources, to monitor the site for any potential fossil finds.

The first find — a layer of 120,000-year-old shells — emerged from beneath the school’s central courtyard in June 2022, and the fossil discoveries continued through July 2024.

L.A. County Museum of Natural History paleontologist Austin Hendy found out about the dig from a colleague and rushed to the site the next morning.

“This is a once-in-a-century opportunity,” Hendy said. “It's the only site in California that looks like this.”

Though L.A. is home to the famous La Brea Tar Pits, much of the region's fossil record is buried beneath concrete.

The second largest discovery was an 8.7 million year-old densely layered bonebed with millions of fish and marine mammal remains.

Multiple tons of material were ultimately excavated from the site — “We collected more than we needed, because you only get one shot to do this,” Hendy said.

These limestone rocks excavated from San Pedro High School were later identified to be 8.7 million-years-old, placing them in the Late Miocene period.

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Wayne Bischoff, Envicom Corporation

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Courtesy Los Angeles Unified School District

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Fossilized shark and dolphin poop, known as coprolites, contain small fish bones.

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Wayne Bischoff, Envicom Corporation

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Courtesy Los Angeles Unified School District

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The majority of the fossils were relocated to CSU Channel Islands and the L.A. County Museum of Natural History. Future research could paint a more complete picture of the region’s history.

“We've moved away from just describing what we find, identifying new species, and making lists of things,” Hendy said. “To really trying to understand how ecosystems function, how they've changed through time.”

Hands-on experience with San Pedro’s prehistoric past

A few of the fossils will be displayed at San Pedro High School so students can learn more about the history under their feet.

“The fact that it's here, and that we get to learn more about it, and it's gonna spur more discovery?” said senior Taya Olson. “It's just something that I'm really, really excited about.”

San Pedro senior Milad Esfahani worked with Hendy to help catalog this prehistoric ecosystem as an intern with the museum this summer. The marine science magnet student remembered holding a 125,000-year-old shell for the first time.

Many of the fossils were discovered beneath the area where students now eat lunch at San Pedro High School's main campus.

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Mariana Dale

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LAist

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"Hands on stuff is a lot more of an educator than a textbook," said San Pedro senior Milad Esfahani, right, of his internship experience at the L.A. County Museum of Natural History. Assistant Curator of Invertebrate Paleontology Austin Hendy, left, said Esfahani's work cataloging fossils helped make the collection accessible to researchers around the world.

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Mariana Dale

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LAist

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“It was like a lot of shock, but eventually I was like, wow, this is, you know, super cool,” Esfahani said.

Though tedious at times, Esfahani’s work meticulously examining the tiniest details of each fossil, sometimes with a microscope, helps make the fossils accessible to researchers from around the world.

“Hands-on stuff is a lot more of an educator than a textbook,” said Esfahani, who plans to study marine paleontology after he graduates.

Other LAUSD students have had an opportunity to interact with the fossils on field trips to the Natural History Museum.

“My goal in the long run is to see that this becomes a teaching opportunity,” Hendy said.

This story first appeared in the Boyle Heights Beat.

Air regulators on Thursday ordered Lineage Logistics to strengthen odor-control measures, expand air monitoring and improve communication with residents as cleanup of the burned warehouse continues.

The South Coast Air Quality Management District hearing board unanimously approved an abatement order on the second day of a public hearing into a series of air quality violations tied to the June fire in Boyle Heights.

The board did not require Lineage to pay any financial penalties, which several elected officials, including Los Angeles Mayor Karen Bass, had requested in light of the numerous air quality violations it had been issued.

Lineage is required, among other things, to:

• Each day remove 10%, or about 8.8 million pounds, of the food waste stored in the facility at the time of the fire; 
• Conduct more monitoring for airborne pollutants further from the warehouse; 
• Increase communication with the community, including providing updates on the cleanup in Spanish.

Many of the order’s requirements had already been implemented at the site, Lineage representatives said, while the community communication plan and increased air quality monitoring is expected to happen within five days.

Representatives for AQMD said the order was designed to strike a balance between swift food waste removal and work to control the odors plaguing the community. AQMD focuses specifically on air pollution regulation.

Dominic DiCarlo, Lineage’s vice president of global safety and compliance, said that he believes all of the rotting bulk food items will be removed by next week, without citing a specific date. He added that it would take another week to remove the rest of the material and fully disinfect the facility.

Bass ordered that all biohazard food waste be removed from the facility by Aug. 14. It’s unclear if Lineage will meet the mayor’s deadline.

DiCarlo said the company expects to spend between $80 million and $100 million on the cleanup and remediation of the burn site. He claims that about 80% of the approximately 88 million pounds of food stored at the facility has been removed to about 10 landfills and recycling facilities in Southern California and Arizona.

“This order will ensure that there are enforceable conditions on [Lineage] as it completes this cleanup project, which will minimize odor impacts on the community and expedite removal of food waste which is the source of these odors,” said Josephine Lee, senior deputy counsel for AQMD.

A new guide from a group of local scientists helps Angelenos affected by the 2025 L.A. fires navigate questions about soil testing and clean up.

The guidelines are based on soil tests conducted by USC CLEAN and Community Action Project Los Angeles on more than 6,000 lots in and around burn zones in the Pacific Palisades and Altadena.

Sujeet Rao, the health and well-being practice director at Public Exchange at USC, who contributed to the guide, said it's a response to questions that he and other contributors knew residents had.

“We all came together … to help fire affected families understand and navigate questions they may have about environmental contamination related to the fires,” Rao said.

The guide includes information about soil contamination, testing, cleanup methods and ways to reduce your exposure risk.

The dangers of soil contamination

When the Eaton and Palisades fires burned down houses and garages, items including paint, kitchen appliances and car batteries released dangerous substances into the environment.

Exposure to these substances can increase the risk of respiratory, neurological and reproductive problems, as well as certain cancers.

Lead was the most common concern, according to the scientists’ testing.

Rao said that’s worrying because lead is a neurotoxin.

“What that means is that [for] especially young children whose brains are still developing or women who are pregnant, lead can affect the development of the brain,” Rao said.

Should you test your soil? 

Rao said it’s hard to say whether any specific property needs soil testing or cleanup, but gave some general guidelines.

If your house burned, definitely.

If you saw ash in the air, on the ground or otherwise near your house during the fires, get your soil tested.

If not, testing is likely unnecessary.

Other things to consider are the age of the houses that burned and their proximity to your property.

“We do know that if you’re in a neighborhood that has a lot of old housing, it is more likely that there is lead that could have been mobilized,” Rao said. “The inverse of that is, in the Palisades, we generally see much lower levels of lead contamination because the housing there tends to be so much newer.”

What to know about soil testing

The guide suggests two main options for going about testing.

One option is to hire specialists to come to your house to collect and test samples.

The other option is collect samples yourself and submit them to a testing program, such as USC CLEAN.

In the testing results, look for contaminant levels that exceed the residential limits set by the Environmental Protection Agency or the California Department of Toxic Substances Control.

Both account for how the area is used, including whether children are playing outside or people are gardening.

Cleanup methods

If your soil test results are above the EPA or DTSC limits, the guide offers four main methods to clean it up.

1. Excavation: Removing the soil, throwing it out at a disposal facility and replacing it with clean soil.
2. Capping: Putting clean soil, gravel or another physical barrier between the contaminated soil and the people and animals who may come into contact with it.
3. Immobilization: Adding compost, phosphorus or other materials to stop the spread of contaminants.
4. Bioremediation: Putting plants, bacteria or fungi into the affected soil to break down biodegradable contaminants.

Some soil remediation can be paid for through insurance. Costs will depend on the size of your yard and which contaminants are present. The guide estimates that the least costly options are capping and immobilization, which can run around $10,000.

The full soil remediation guide is on the Consortium website.

WASHINGTON (AP) — President Donald Trump said Thursday that he is once more trying to limit the number of people who are born in the country who can become American citizens, in a sign that even after his first attempt at limiting birthright citizenship was rejected by the Supreme Court, he’s ready to try again.

The president said he was signing two executive actions on immigration, including one limiting the number of people eligible for U.S. citizenship after being born in the United States.

The written executive order released later Thursday was narrower in scope than the previous one shot down by the Supreme Court and appeared to focus on restricting automatic citizenship to specific categories of people, including children born to adults with connections to foreign embassies or organizations, as well as anyone considered an “alien enemy” of the United States.

It also aimed to restrict birthright citizenship to anyone whose parents “engaged in fraudulent activity to obtain citizenship.”

A second order seeks to curb what Trump called “birth tourism” by increasing restrictions on visitors to the U.S. who want to obtain visas to give birth while in the country.

Trump said he thought his latest actions would be constitutional.

“I thought we were going to win it at the Supreme Court. Unfortunately, we had a bad decision, very unfair decision. Our country suffers because of it and we’re ending it a different way,” Trump said.

In June, the Supreme Court rejected Trump’s previous efforts to declare that children born to people in the U.S. illegally or temporarily aren’t American citizens, and upheld a broad conception of birthright citizenship.

On Trump’s first day in office of his second term, he signed an executive order aimed at ending birthright citizenship, which allows anyone born in the United States to automatically become an American citizen.

Trump’s administration was immediately sued by opponents who said the executive order went against the 14th Amendment, adopted after the Civil War, which makes anyone born in the country a citizen, with very limited exceptions.

The executive order was blocked by several lower courts and never took effect.

In June, the Supreme Court struck down Trump’s order by a 6-3 vote. But the vote was too close for many immigration advocates and legal observers who felt the legal question of birthright citizenship was a long-settled issue.

Just past the doorway at ALTO, off busy Ventura Boulevard in Studio City, the bar opens up under exposed post-and-beam ceilings, tanned cowhides hanging along the walls like abstract art.

Grab a seat at one of the small tables and settle in for the open-fire South American restaurant's new, more casual bar concept, where street food takes center stage from executive Chef Esteban Klenzi and co-founder Juana Castellanos.

In its first year, ALTO has already landed a spot in the Michelin Guide California.

One culture, two chefs

Both chefs came up through fine dining — including time in Spain's Basque Country — and watched their peers wear rigid, high-pressure kitchen culture as a badge of honor.

But Castellanos and Klenzi wanted something different.

For Klenzi, cooking is as much about feeling as it is about food — an idea his new bar menu extends directly.

"It's like cooking at home for my friends or my family," he said.

ALTO Co-Founder Chef Juana Castellanos and Executive Chef Esteban Klenzi.

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Courtesy ALTO

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Their connection runs deeper than the kitchen, though. Both chefs grew up around the Río de la Plata, the shared basin uniting Argentina and Uruguay into a single Rioplatense identity — once part of the same Spanish colonial territory before an 1828 treaty, brokered under British pressure, split them apart. Not unlike the Basque Country straddling Spain and France: one culture, divided by a border neither side chose.

What to order

The bar leans into what Klenzi calls the rotisserías tradition — the everyday, prepared-food spots common across Argentina. That shows up in the Tongue & Trout Roe Toast ($17): sous-vide beef tongue over brioche, finished with a celery-carrot vinaigrette and a crown of trout roe. It's a savory, briny bite, perfect for sharing to start the meal.

Close-up of two pieces of toast on a dark plate, each topped with ruffled, thin-sliced beef tongue tinted pale pink, scattered with chopped herbs and diced vegetables, and crowned with a generous mound of glistening orange roe.

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Soledad Recatume

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Courtesy ALTO

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The Real Deal ($18) — ALTO's take on the classic choripán sandwich — pulls from the dinner menu, too: short rib and smoked pork, the same cuts used in the Asado Banderita and Pork Txuleta.

When the pair first sat down to design the menu, Klenzi found himself facing a deceptively simple question: "Should we make a burger? Or shall we make a choripán?"

They chose the choripán, prizing the way beef and pork together deliver, in his words, "the best flavor you can get from both of them." Lard from the pork chop trim adds richness; the short rib's fat keeps the sausage moist, with smokiness carried over from that same applewood-smoked chop.

For something heartier, there's the Banderita & Frites ($39): a thinner cut of short rib than its dinner-menu counterpart, seared on both sides.

Alongside it, try the smashed potatoes from Weiser Family Farms, cooked in the charcoal oven with beef tallow. Klenzi refuses to serve french fries — this is his answer instead, crisp outside, rich with tallow underneath.

What to drink

A pour from ALTO's Vermucito Experience, served over ice with soda water.

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Soledad Recatume

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Courtesy ALTO

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Ever since I wrote about Spanish vermouth last month, I've been a magnet for the stuff — not complaining, especially during these warmer months. ALTO had me covered, though the serving style looked nothing like what I'm used to.

Unlike the Spanish and Italian style of an orange slice and olive, Argentine vermouth is served over ice with soda water — lighter, easier to drink.

A cozy corner of ALTO's dining room, where velvet chairs surround a wood-burning fireplace.

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Courtesy ALTO

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On the table: a trio from the Vermucito Experience — Las Flores blanco from Uruguay, and La Fuerza's rojo and sideral from Argentina, Malbec-based pours ranging from $12 to $22.

"When you pour it in the glass, it's almost red. It looks almost like a wine," Klenzi said of La Fuerza's rojo, made with Malbec. "You can really feel the pure essence of the Malbec wine."

The regular dinner menu is a great choice for a special night out. But the bar is for every other night — the "almost every day" Klenzi imagined when he decided a choripán, not a burger, was the answer.

"If we see your face every day, we're gonna take care of you every day," Klenzi said.