The Brief

If your springtime allergies have felt sneezier and sneezier, you might be right. And pollen is likely not the only culprit.

Mold and other fungi release microscopic spores that can also trigger allergy symptoms, and a new study found the invisible allergens are now showing up earlier each year.

Researchers at the University of Michigan found that fungal spore season in the U.S. is starting nearly a month earlier than it did two decades ago, thanks to climate change. The trend is even more pronounced in California.

“Over the past two decades, fungal spore seasons in the U.S. have shifted significantly due to climate change,” said Ruoyu Wu, who led the research while earning her master’s at the University of Michigan’s School for Environment and Sustainability.

Wu and her team analyzed nearly 20 years of data from 55 pollen-monitoring stations across the continental U.S. These sites, part of the National Allergy Bureau network, track airborne allergens like pollen and spores. They found that by 2022, the average fungal spore season began 22 days earlier than it did in 2003.

“The fungal spore season across the country from many sites has advanced,” said Kai Zhu, the study’s senior author and an associate professor of sustainability, environment, and ecology at the University of Michigan. “One of the places they were especially strong was actually in California,” said Dan Katz, researcher on the study and assistant professor at Cornell University.

Four out of the five stations monitored in California showed some of the strongest advancements, which were, in some cases, arriving a full month earlier than they had previously, Katz said.

The reason for this, according to Zhu, is California’s Mediterranean climate, which leads to a different spore calendar than the rest of the country. “With higher concentrations in the winter and springtime and lower in the summer. This is different from the other states, other areas where the climate is different,” Zhu said.

Stems of purple lupine blossom along Grizzly Peak Boulevard in Berkeley, California on April 26, 2023.

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Kori Suzuki

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Spore release is influenced by climate conditions like temperature, humidity, and wind, but responses vary by species, according to Zhu. And this shift matters to many people. A 2023 studyfound that roughly 1 in 5 Americans show sensitivity to fungal allergens after they analyzed clinical samples from more than 1.6 million patients in the U.S. “We know pollen is a big part [of allergy season]and that’s certainly true, but then there are 20% of people who actually suffer from fungal spore allergy,” Zhu said.

“If you’re somebody who has allergies to fungal spores, this is bad news for you because it means a longer period of exposure,” Katz said.

Finding that the allergy season starts 22 days earlier on average is going to raise concerns about how we manage allergies in vulnerable populations, Zhu added.

But the implications of this study go beyond health. The study also examined the fungal spore season through an ecological lens, analyzing when spores begin accumulating in high concentrations. Even by that measure, the season is starting sooner. The ecological spore season — the period when fungal spores are most abundant in the environment — now begins about 11 days earlier than it did in 2003, according to the study.

“The goal of our study is twofold. One is to assess the public health impacts, but on the other hand, we also want to look at the ecological impact,” Zhu said.

And while spores are starting to appear earlier, overall spore counts are actually declining. “The total amount of the fungal spores is actually getting lower. This is related to [a decrease] in rainfall,” Zhu said, adding that this is a very visible fingerprint of climate change.

That decrease in spore count is a concern for ecosystems. Fungi play a crucial role in nature by breaking down organic matter and facilitating the cycling of nutrients through food webs. “They matter for decomposition, nutrient cycling, and plant-fungi interactions,” Zhu added.

This study was inspired by a 2021 study that found climate change to be a major driver of changes in pollen spore seasons, Zhu said. He adds that there is still much to learn.

“I think if we are talking about potential for future studies, I think it will be super interesting to explore the correlation between actual hospital records — people that actually suffer from the allergies — and the change in fungal spore season as we’ve shown here, to understand better the health impacts of the changing environment and human health,” Zhu said.

A federal judge on Tuesday held the Department of Homeland Security in contempt for allegedly slow-rolling an order to create digital copies of communications from personal and government cell phones used by immigration agents during operations in the Los Angeles area last year.

U.S. District Judge Maame Ewusi-Mensah Frimpong in the Central District of California previously ordered the federal government in January to expedite imaging the personal cell phones of more than 800 agents involved in controversial immigration raids in Los Angeles in 2025.

Judge Frimpong imposed a fine of $500 per day on the federal government until it complies with the order to turn over phones as part of discovery and reimburse plaintiffs’ attorneys for the legal costs of getting the records.

Attorneys for DHS admitted in court in June that the agency had not provided the records. They told the judge they were processing the government devices at a rate of three phones every two weeks, which plaintiffs noted would take nearly four years to complete.

Attorneys representing immigrants caught up in Operation At Large — the name given to the Trump administration’s Los Angeles immigration crackdown last year — argue the phones may contain evidence of a pattern of racial profiling by federal agents.

Attorneys from the American Civil Liberties Union wrote in May that the Department of Homeland Security “simply proceeded to thwart” Frompong’s order “by dragging their feet on imaging government-issued cell phones and by openly defying the order as to personal phones.”

Last month, ACLU attorneys asked Frimpong to issue another order that would prohibit agents from detaining people based on their race. They cited text messages and body camera footage in which agents used racial slurs, including “wet and “tonks,” to identify working-class Latinos to stop, according to court records.

“Not only are federal agents violating the Constitution on the streets, the government is violating court orders by intentionally withholding critical evidence about its immigration enforcement operations.” said Mayra Joachin with the ACLU of Southern California.

The Department of Homeland Security did not immediately respond to a request for comment. 

L.A. City Councilmember Ysabel Jurado introduced seven motions Tuesday, all geared toward providing immediate and long-term relief for community members who’ve been hurt by the aftermath of the Lineage warehouse fire in Boyle Heights.

According to Jurado, the legislative package is centered around three priorities:

• “Immediate relief and cleanup”
• "Accountability, transparency and site safeguards”
• “Long-term oversight and community power”

Jurado is calling for a Mitigation Response Fund of up to $10 million to provide aid for affected residents and small businesses that have lost revenue as the neighborhood continues dealing with foul odors, flies, rats and other vermin. Jurado also wants to see higher penalties for corporate negligence, and create a commission to advise L.A.’s city leadership on environmental justice policy.

After the fire in mid-June, tons of food at the cold storage warehouse were left to rot. Now, more than a month later, community members are still dealing with odors and pests, which have disrupted local businesses, community spaces and everyday quality of life.

Local activists and community members say the Lineage fire aftermath is part of a long legacy of environmental injustice in Boyle Heights. In recent decades, residents have also dealt with pungent smells from rendering plants in the neighboring city of Vernon. And up until 2015, Vernon was also home to Exide, a battery recycling facility that contaminated the soil of thousands of homes in surrounding communities with lead. The taxpayer-funded cleanup for that issue is still ongoing. Lineage also has several facilities in the city of Vernon.

Jurado’s proposed commission “can serve as an interdisciplinary body to identify and start to protect our communities from historical harms that continue to function as standard practice today,” said mark! Lopez, a community organizer at East Yard Communities for Environmental Justice.

Community members will have a chance to provide public comment on Jurado’s motions before they move to a full council vote.

In a statement, Jurado said recovery "cannot mean removing debris and moving on.” In her view, it must also involve the “aggressive pursuit of every recoverable dollar from responsible parties” and "give communities that have carried Los Angeles' environmental burdens real power over what happens next."

Lineage President and CEO Greg Lehmkuhl previously said in a statement that he cannot estimate how long the cleanup will take. “What we can tell you is this: there are people on site working on this recovery 24/7,” he added.

L.A. County will provide assistance grants to small businesses that suffered financial loss from the Lineage warehouse fire that burned for a week in June in Boyle Heights. The fire's aftermath has many in the community seeking help to recover.

Why it matters

The county surveyed business owners in the area who said they are continuing to face a loss of customers and revenue amid persisting odor from food in the Boyle Heights warehouse that continues to rot in the summer heat. The fire started June 17 and burned until June 24. It initially generated significant air quality hazards and prompted evacuations.

About the funds

The grants from Supervisor Hilda Solis’ discretionary budget will be disbursed within 45 days — and then draw from countywide funds if needed. The county will also seek reimbursement for the grants from Lineage. The Department of Public Health and County Counsel will also evaluate new fees and penalties for businesses that pose environmental or health risks in L.A. County. Some fee increases could fund county assistance for future economic disasters.

Who is eligible

Small businesses within the affected area will be able to apply for the grants. The county is looking to prioritize initial funding for businesses that have not already received emergency financial support from other organizations.

More details to come

The Board of Supervisors and Department of Economic Opportunity will announce more about the amount of assistance and how to apply when those details are made final. Affected business owners and residents can find more information on the L.A. County Recovers website.

What to have ready

Existing documentation from L.A. County recommends you collect the following documentation of any damage.

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Courtesy L.A. Department of Economic Opportunity

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Courtesy L.A. Department of Economic Opportunity

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The Los Angeles City Council voted 13-1 on Tuesday to put a measure on the November ballot that will ask voters whether homes affected by the Palisades Fire should be exempt from the city’s controversial “mansion tax.”

If passed, the exemption would apply to the sale of homes damaged or destroyed by the fire. The exemption would last until early 2030, five years from the date of the fire.

This could potentially reduce the tax’s revenue up to 6% — or $32 million each year — according to a May 2026 report from the L.A. Housing Department.

How the ‘mansion tax’ works 

The “mansion tax,” officially called Measure ULA, is a tiered tax on real estate selling for $5.4 million or more. The tax, which was passed by voters in 2022, funds programs such as rental assistance, eviction defense and affordable housing construction in the city.

The measure has fierce defenders, as well as staunch critics. A statewide ballot measure sought to kill the tax before it was pulled by supporters earlier this year in exchange for a legislative deal in Sacramento.

State and local lawmakers have considered reducing the tax or exempting newly constructed apartment buildings. Their ideas have been guided by economic studies that found the tax was slowing down housing development in the city. So far, none of those reforms have mustered enough support to pass.

Where council members stand

Councilmember Eunisses Hernandez, whose district includes Highland Park, Chinatown and Westlake, previously spoke against the measure’s scope at a City Council meeting on July 1.

“Any exemption should only be for homeowners whose primary residence was destroyed, and people who genuinely need help rebuilding, not LLCs, investors or people with a portfolio of properties,” Hernandez said. “We had the opportunity to write those protections into this ordinance, and we didn’t.”

Hernandez criticized her colleagues for shooting down the post-fire eviction protections she proposed after tenants living in her district lost work as gardeners and nannies in the Pacific Palisades.

“When wealthy property owners need relief, we’re willing to bend over backwards,” she said. “But when working class people and tenants need protection, suddenly our hands are tied and the political will is not there.”

Councilmember Traci Park, who represents the Pacific Palisades, voiced support for the measure at the same meeting.

“Putting this tax on these folks who are trying to recover and reckoning with the fact that some of them just aren’t coming home, is just unspeakably cruel,” Park said. “It’s an exemption that applies in very narrow circumstances to original owners and first transactions for five years, only for residential properties. This is the least we can do as this community continues to recover.”

In Tuesday’s meeting, Hernandez cast the lone vote against placing the measure on the November ballot. Thirteen council members supported the move. Councilmember Curren Price was not present for the vote.

What happens next 

L.A. voters will have the final say on whether Palisades homeowners will be exempt from the tax. The proposal needs a simple majority of support from voters in the upcoming November general election to pass.

How to keep tabs on the L.A. City Council

The L.A. City Council tends to meet Tuesdays, Wednesdays, and Fridays. Meetings typically start at 10 a.m.

Here’s how you can follow along:

• Attend in person: The council typically meets at City Hall, Council Chambers, 200 N. Spring St., Los Angeles
• Watch the live broadcast
• Here’s how to submit a comment or contact the council