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As California installs more artificial turf, health and environmental concerns multiply

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As California installs more artificial turf, health and environmental concerns multiply

Fields of plastic, or fake turf, are spreading across the Golden State from San Diego to Del Norte counties.

Some municipalities and school districts embrace them, saying they are good for the environment and promote kids’ activity and health. But some cities, including Los Angeles, are considering banning the fields — citing concerns about children’s health and the environment.

Nowhere in the country is turf use growing faster than in California — on school athletic fields, in city parks and on residential lawns. Exact numbers are not known, but it’s estimated that 1,100 acres of the material, or the equivalent of some 870 football fields, are being installed across the state each year.

In 2025, the Laguna Beach Unified School District and the San Mateo County Office of Education both received environmental accolades from the state Department of Education for, among other efforts, installing artificial turf.

September 2016 photo of Laguna Beach High School’s new football field and track.

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(Scott Smeltzer / Daily Pilot)

“The fields do not require water, pesticides or fertilizers. They also provide year-round playing time without the need for closures for regrowth or rain damage,” said Laura Chalkley, director of communications for San Mateo Union High School District.

But a growing number of health experts, environmentalists and parents say the fields are harming children’s health and heating up the environment — and they’re pushing their cities, counties and school districts to ban them.

Terry Saucier, a Tarzana resident and chair of the SoCal Stop Artificial Turf Task Force, wants Los Angeles to do that.

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“I wish they’d stop calling it grass,” Saucier said. “It’s carpet. They’re taking green space, grass and dirt away from kids and laying down synthetic carpets.”

The L.A. City Council’s Energy and Environment Committee is studying a possible ban. It’s up for discussion in October. Other cities, including San Marino and Milbrae, already have moved to prohibit the outdoor material.

A flag football player kicks up pellets on the artificial turf at Oxnard High School.

A flag football player kicks up pellets on the artificial turf at Oxnard High School.

(Michael Owen Baker / For The Times)

Turf is designed to look and feel like grass. It consists of green blades, made of nylon or other plastic polymers, rooted in a plastic mat. In between the “grass” is a layer of fine, loose material made of recycled tires, rubber, sneaker soles, sand, olive pits or coconut.

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Researchers, including Sarah Evans, assistant professor of environmental medicine at the Icahn School of Medicine at Mount Sinai in New York, said a growing body of research shows these carpets have the potential to cause harm in three main ways: burns, chemical exposure and injuries.

“These surfaces get really hot,” she said, citing research that artificial turf can reach temperatures in excess of 160 degrees, and can cause first- and second-degree burns on skin. She said her own kids complain that their “feet feel like they’re burning … even with shoes on. So it’s really, really unsafe temperatures under a lot of conditions.”

Artificial turf at Oxnard High School.

Artificial turf at Oxnard High School.

(Michael Owen Baker / For The Times)

In addition, there are chemical exposures, including from forever chemicals, or PFAS, that have been detected in the blades; endocrine disruptors such as phthalates; and volatile chemicals such as benzo(a)pyrene and naphthalene. What the effects are when children and athletes play, roll and eat on the fields is not known. Studies of these and other chemicals found in crumbled tires have shown they can cause cancer in laboratory animals if inhaled, absorbed through the skin, or ingested, Evans said.

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There are also injuries associated with turf fields that don’t typically occur on natural fields, including to ankles and knees, she said — the result of how cleats grip the infill.

Proponents, however, say some of those harms have not been established with certainty. And heat can be mitigated by watering the fields to keep them cool, or using natural infill products such as ground up walnut shells or olive pits that don’t heat up as much.

They also point to a draft report from California’s Office of Environmental Health Hazard Assessment that examined one part of artificial turf, the loose infill, made of recycled tires. It found “no significant health risks to players, coaches, referees and spectators from on-field or off-field exposure to field-related chemicals in crumb rubber infill from synthetic turf fields based on available data.”

Melanie Taylor, president and chief executive officer of the Synthetic Turf Council said the California report, and others, “reaffirmed the safety of turf systems, and that “in areas where natural grass is not practical or sustainable, synthetic turf ensures safe, consistent, and accessible places to play, gather, and be active.”

The report came at the request of the state’s waste agency, CalRecycle, in 2015. CalRecycle asked the health hazard assessment agency to examine tire infill as a solution to the decades-old problem of millions of tires piling up in landfills. Waste officials were looking for ways to uses the old tires and needed to know if they posed health risks to people who might recreate on the ground material.

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It’s common for scientists to ask for outside review, and when the state convened an expert panel to evaluate its turf report, reviewers weren’t so sanguine about the agency’s conclusions.

Amy Kyle, one of the independent scientific advisers on the panel and a UC Berkeley environmental health scientist, said she and other advisers had concerns about several aspects of the study design and methodology — which they lodged in public discussion — but which were largely ignored.

For instance, she said, when a laboratory at UC Berkeley analyzed the chemical signatures found in the infill, it found more than 400 chemicals but could identify only roughly 180 of them.

“That fell out of the final report … or the final session of the study. Those results, they kind of left that all out,” she said.

In a transcript from one of the panel meetings in April, Kyle expressed concern about the report’s conclusions.

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“It’s not an emergency. I wouldn’t evacuate playgrounds,” she told the agency and her fellow advisers. “But if I were advising my friend on the school board about this, I would say I would try not to use this stuff. “

Other panelists agreed.

“I’m glad my kid mostly played on grass,” said John Balmes, professor of medicine at UC San Francisco.

Jocelyn Claude, a staff toxicologist for the state, reiterated that the report looked only at the tire infill, and should not be seen as an official California endorsement of synthetic turf. She noted that her office did not look at the blades, where PFAS chemicals have been detected.

“Since we only looked at the crumb rubber, there are limitations in what our results state and how they can be applied,” she said.

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Finally, Evans and Saucier have concerns for the wider environment: microplastics that slough off the turf and the heat generated by the fields of fossil-fuel derived plastic, which can make a local area hotter.

According to the Synthetic Turf Council, the average athletic field uses 400,000 pounds of infill and 40,000 pounds of artificial turf carpet. In addition, research shows that an average synthetic turf field loses between 2,000 and 3,000 pounds of microplastic fibers every year.

“So here, from cradle to grave, we are creating product that contributes to climate change and just makes the planet hotter,” Saucier said. Turf makers say they have made improvements to their products to lower the temperature but acknowledge they can get hot.

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More middle-class Californians cancel health coverage after losing federal aid

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More middle-class Californians cancel health coverage after losing federal aid

Facing higher premiums and the loss of federal subsidies, 374,000 people with health insurance from the state marketplace known as Covered California canceled their coverage in the first three months of the year, according to government statistics.

The cancellations amount to 19% of those who had renewed their policies on the state marketplace during open enrollment, state officials said. Those cancellations are higher than in the past three years when they ranged from 13% to 15% of those who renewed.

Jessica Altman, executive director of Covered California, attributed the jump in cancellations to the expiration of enhanced federal subsidies that caused the cost of a plan to leap for most middle-class Californians.

“We expect coverage losses to increase through the year,” she said.

Overall, Covered California had 1.8 million enrollees in February, down from 1.94 million the year before — a decline of 7%.

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Altman said monthly enrollment numbers are delayed because consumers have a three-month grace period to resume their premium payments before the insurance carriers end their coverage for nonpayment.

This year, many middle-class Californians who depend on the state-run insurance marketplace created under the Affordable Care Act faced annual costs that were hundreds of dollars higher than last year because of the end of enhanced federal subsidies that began during the COVID-19 pandemic.

In 2021, Congress voted to temporarily boost the amount of subsidies Americans could receive for an ACA plan.

The law also expanded the program to families who had more money. Before that 2021 vote, only Americans with incomes below 400% of the federal poverty level — currently $62,600 a year for a single person or $128,600 for a family of four — were eligible for ACA subsidies. The 2021 vote eliminated the income cap and limited the cost of premiums for those higher-earning families to no more than 8.5% of their income.

On top of the loss of the enhanced federal subsidies, the average premium charged by insurers this year for a Covered California plan rose by more than 10% because of fast-rising medical costs.

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The decline in ACA plan enrollees, however, has been greater in some other states. California has tried to keep people insured by using state tax money to fill in the gap for lower-income families.

This year, the state budgeted $190 million for premium subsidies for people with incomes of up to 165% of the federal poverty level.

In his budget plan, Gov. Gavin Newsom proposed spending $300 million on those state subsidies in 2027. That would expand the subsidies to enrollees with incomes up to 200% of the federal poverty level, or $31,920 for an individual or $66,000 for a family of four.

“We may actually see a number of Covered California enrollees paying less in 2027” because of the additional state subsidies, Altman said.

In May, Newsom also proposed in his budget that an additional $27 million in state money be used to help enrollees pay for the cost of gender-affirming care. That amount is an increase to the $30 million that he earlier proposed be spent this year and next to defray those costs for Covered California enrollees, according to state officials.

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Last year, federal health officials enacted a rule that said the federally subsidized ACA plans could no longer cover gender-affirming care because it was no longer considered an “essential health benefit.”

Newsom’s proposed budget still faces debate in Sacramento and approval by the state Legislature.

The state marketplaces, created by the Affordable Care Act, also known as Obamacare, were meant to help those who don’t have access to an employer’s health insurance plan and have incomes too high to qualify for Medi-Cal, the government-paid insurance for the poor and disabled.

Because of the higher cost this year, more people are choosing the lower-priced Bronze plans. Those plans have higher co-pays and deductibles than the more expensive plans.

“We’re very concerned with the large shift to Bronze,” Altman said. “When you have higher cost-sharing, you’re more likely to defer care.”

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Political play or budget fix? Competition for JPL’s management comes at a fraught moment

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Political play or budget fix? Competition for JPL’s management comes at a fraught moment

Weeks after Trump administration officials announced that management of NASA’s Jet Propulsion Laboratory would open to competitive bidding for the first time, questions remain as to why Caltech could lose control of the lab its researchers founded in 1936.

On one hand, observers note, high-profile delays and cost overruns on significant recent JPL projects earned sharp criticism from NASA even before the 2024 presidential election.

On the other, the second Trump administration’s record of squeezing scientific funding and attacking institutions in Democrat-led states make it difficult to consider any action separate from the charged political atmosphere, analysts say.

“My first instinct is that this [competition] isn’t necessarily a bad thing. It’s not written in stone that Caltech must run JPL, and it wouldn’t be the worst thing to have some competition for running the place,” said Casey Dreier, chief of space policy at the non-profit Planetary Society.

“That said, that requires this contract evaluation to be fair and unbiased, and this administration has no credibility in such things,” he added. “The responsibility is on NASA to earn the trust and ensure such an evaluation is open and free from political meddling. That’s almost impossible.”

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JPL became part of NASA when the space agency was formed in 1958, and Caltech has been awarded the contract to run the institution outright ever since.

Its current 10-year contract with NASA, which is valued at up to $30 billion, runs through Sept. 30, 2028.

NASA Administrator Jared Isaacman announced the competition on May 22 as part of a slate of sweeping organizational changes at the space agency.

“When you step back, it is worth considering how many additional missions we could have undertaken with the resources lost to program cancellations and cost overruns over the years,” Isaacman wrote in a memo to staff. “That is the problem we must fix, so the American taxpayer and space-loving community can receive the highest scientific return on every dollar we spend at NASA.”

Competing the contract for JPL, the lone Federally Funded Research and Development Center (FFRDC) in NASA’s portfolio, was an effort to address cost-efficiency concerns, Isaacman wrote.

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“This process will take several years, and I do not anticipate it having any impact on the projects underway or the location of the facilities,” he wrote. “It does, however, provide an opportunity to evaluate management costs, overhead burdens, and ideally find ways to get after the science faster and more affordably.”

In a joint statement, Caltech President Thomas F. Rosenbaum and JPL Director Dave Gallagher said the competition was “no surprise” and that a team was already in place “to ensure we are positioned for success.”

In July, NASA’s Office of Procurement held an informational event for companies and institutions interested in the upcoming FFRDC contract.

The dozens of registered attendees included universities like USC, Texas A&M University and Georgia Tech, aerospace companies such as Boeing and Lockheed Martin and nonprofit corporations like MITRE, which manages several FFRDCs, and Universities Space Research Association, a university consortium founded by the National Academy of Sciences in 1969. (SpaceX, which has been awarded more than $13 billion in NASA contracts in the last decade, was not on the list.)

“Lockheed Martin has more than 50 years of deep space exploration success with JPL, supporting landmark missions to Jupiter, Venus, Saturn, Pluto, including nearly a dozen missions to Mars,” said Bob Behnken, VP of Exploration and Technology Strategy. “We look forward to building on that unmatched partnership in the years ahead. We are closely following NASA’s review and will continue to assess how we can best contribute to the agency’s mission.”

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Other attendees contacted by The Times declined to discuss their involvement.

Isaacman indicated that JPL could come under scrutiny even before he took over NASA. The billionaire entrepreneur referenced high costs at the La Cañada Flintridge institution in a memo prepared in advance of his confirmation hearings on his priorities for the space agency.

“Contract structure: Very expensive,” Isaacman wrote of JPL in a table outlining organizational issues at each of NASA’s centers. “Must increase the output and ‘time-to-science’ KPI.”

The institution has recently suffered a number of high-profile management stumbles.

After the JPL-managed Psyche mission to a metal-rich asteroid failed to meet its 2022 launch date, NASA commissioned an independent review that said internal reorganizations and personnel changes created distracted and uninformed managers and burned-out, stretched-thin staffers.

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After a 2023 independent review found there was “near zero probability” of the JPL-managed Mars Sample Return mission making its proposed 2028 launch date, and “no credible” way to bring rocks back from the Red Planet within the stated budget, Isaacman’s predecessor Bill Nelson put out a call for proposals to industry and all other NASA centers, forcing JPL to compete for its own project.

After Trump’s election, Nelson announced that the final decision would be in the next administration’s hands.

The White House pushed for massive cuts to NASA’s 2026 budget that Congress overturned, and has lobbied for similarly steep cuts again this year. JPL has instituted painful cost-cutting measures of its own, reducing staffing from roughly 6,500 employees in 2023 to 4,500 last year through layoffs and attrition.

Its struggles come at a point when NASA is enthusiastically embracing private industry. Last month the agency awarded several key contracts for its upcoming lunar missions to Jeff Bezos’s Blue Origin and other private companies.

Trump has also made no secret of his willingness to punish states that haven’t voted for him through job losses. In announcing his decision to move U.S. Space Command from Colorado to Alabama, Trump acknowledged that his loss in Colorado in three presidential elections played a part in the move.

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It’s impossible to consider any decision on JPL’s future separate from the administration’s track record of politically-motivated decisions, Dreier said.

“At the heart of this is why? Why now? If this is not just some rank political attack on California, what do they hope to gain from this?” Dreier said. “That deserves explanation, because the administration otherwise has no credibility here.”

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Dive Into a Very Noisy Sea With Some Very Rare Whales

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Dive Into a Very Noisy Sea With Some Very Rare Whales

The Gulf of Mexico, which the Trump administration calls the Gulf of America, is one of the noisiest bodies of water in the United States. Air gun blasts are the loudest element there, according to research by scientists who monitor underwater acoustics. Shipping traffic is another major contributor.

The noise could affect the ability of Rice’s whales to find food and mates, scientists say. The chronic stress of living in a loud environment could be detrimental to their health.

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