The Brief

Climate change is expensive, deadly and preventable, according to the new National Climate Assessment, the most sweeping, sophisticated federal analysis of climate change compiled to date.

Released every five years, the National Climate Assessment is a congressionally mandated evaluation of the effects of climate change on American life. This new fifth edition paints a picture of a nation simultaneously beset by climate-driven disasters and capable of dramatically reducing emissions of planet-warming gasses in the near future.

This is the first time the assessment includes standalone chapters about climate change's toll on the American economy, as well as the complex social factors driving climate change and the nation's responses. And, unlike past installments, the new assessment draws heavily from social science, including history, sociology, philosophy and Indigenous studies.

The new approach adds context and relevance to the assessment's robust scientific findings, and underscores the disproportionate danger that climate change poses to poor people, marginalized communities, older Americans and those who work outdoors.

"Climate change affects us all, but it doesn't affect us all equally," says climate scientist Katharine Hayhoe, one of the authors of the assessment. But threaded throughout the report are case studies and research summaries highlighting ways "climate action can create a more resilient and just country," she says.

This is also the first time the National Climate Assessment will be translated into Spanish, although the Spanish-language version won't be available until the spring, according to the White House.

The National Climate Assessment is extremely influential in legal and policy circles, and affects everything from court cases about who should foot the bill for wildfire damage, to local decisions about how tall to build coastal flood barriers. "It really shapes the way that people understand, and therefore act, in relation to climate change," says Michael Burger, the director of the Sabin Center for Climate Change Law at Columbia University.

Hundreds of scientists from universities, industry, and federal agencies contributed to the report. They reviewed cutting-edge research published since the last report and contextualized it in decades of foundational climate research.

The fifth edition of the assessment arrives as millions of Americans are struggling with the effects of a hotter Earth. Dramatic and deadly wildfires, floods and heat waves killed hundreds of people in the United States in 2023.

And, while federal spending on renewable energy and disaster preparedness has increased, the U.S. is also investing in new fossil fuel infrastructure that is not compatible with avoiding catastrophic warming later this century.

Here are the three big takeaways from the Fifth National Climate Assessment. More information about the specific effects of climate change in your area can be found in the assessment's regional chapters.

Climate change makes life more expensive

Food, housing, labor – it all gets pricier as the Earth heats up, according to the National Climate Assessment.

Climate-driven weather disasters, like heat waves, floods, hurricanes and wildfires, are particularly expensive. They destroy homes and businesses, wreck crops and create supply shortages by delaying trucks, ships and trains. Such disasters make it more likely that families will go bankrupt, and that municipal governments will run deficits, the authors note.

Weather-related disasters in the U.S. cause about $150 billion each year in direct losses, according to the report. That's a lot of money – roughly equal to the annual budget for the Energy Department – and it's only expected to go up as the Earth gets hotter.

And that's all before factoring in the less obvious or tangible costs of climate change. For example, healthcare bills for people who are sicker because of extreme heat, or have respiratory illness brought on by breathing in mold after a flood. Exposure to wildfire smoke alone costs billions of dollars a year in lost earnings, the assessment notes – a burden that falls disproportionately on poor people who work outdoors.

"The research indicates that people who are lower income have more trouble adapting [to climate change], because adaptation comes at a cost," says Solomon Hsiang, a climate economist at the University of California, Berkeley and a lead author of the assessment.

For example, one of the simplest ways to adapt to severe heat waves is to run your air conditioner more. But "if people can't pay for it, then [they] can't protect themselves," explains Hsiang.

And the hotter it gets, the more profound the economic harm, assessment warns. Twice as much planetary warming leads to more than twice as much economic harm, the assessment warns.

A roadside memorial to those who died in the wildfire that swept through the town of Lahaina, Hawaii in August. The latest National Climate Assessment underscores the many ways that climate change is already making Americans sick, and even killing them.

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Claire Harbage

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NPR

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Climate change makes people sick and often kills them

Since the previous NCA was released five years ago, the health costs of climate change have gone from theoretical to personal for many Americans.

The most obvious risk? Extreme weather, particularly heat, says Mary Hayden, the lead author of the chapter examining human health. Heat waves have become hotter, longer, and more dangerous, and they're hitting areas that aren't ready for them–like the "record-shattering" heat dome that descended on the Pacific Northwest in 2021 and caused hundreds of deaths.

But it's not just heat. Wildfire smoke can send people thousands of miles from the fires to hospitals with respiratory problems and heart disease complications. Hurricanes can disrupt people's access to healthcare: when a clinic is flooded or people are displaced, for example, kidney patients can't get dialysis treatment.

In most cases, the people who bear the brunt of the disasters are those already at risk: poor communities, communities of color, women, people with disabilities, and other marginalized groups. Temperatures in formerly redlined neighborhoods in cities across the country can soar nearly 15 degrees Fahrenheit hotter than wealthier areas just blocks away, putting residents at much higher risk of heat exposure.

The assessment also homes in on research tracking less-obvious health impacts. Living through climate disasters, for example, can leave lasting emotional scars. "We're not just talking about [people's] physical health–we're talking about their mental health. We're talking about their spiritual health. We're talking about the health and well-being of communities which are being affected by this," Hayden says.

That means recognizing the long-term effects on communities like Paradise, California, where people still deal with deep emotional trauma five years after their town burned in the 2018 Camp Fire. The report also flags the growing emotional toll on children and young people, for whom anxiety about the future of the planet is bleeding into all parts of their lives.

A lobsterman paddles out to his boat in a harbor in Maine. Climate change is disrupting ways of living with, and from, the ocean.

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Ryan Kellman

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Climate change threatens people's special, sacred places and practices

The places, cultural practices, and traditions that anchor many communities are also in flux because of climate change.

Fishing communities are seeing their livelihoods shift or collapse. The Northeast's iconic lobster fishery, the single most economically valuable in the country, has withered as marine heatwaves sweep through the regional seas. Shrinking snowpack and too-warm temperatures are interrupting opportunities for beloved recreational activities, like skiing or ice fishing.

Indigenous communities are being forced to adjust to new climate realities, which are disrupting traditional food-gathering traditions. In Palau, a monthly tradition of catching fish at a particularly low tide has been upset by sea level rise, which keeps water levels too high to trap fish in the historically-used places. Sea level rise is also forcing coastal communities to re-think their very existence, pulling apart the social fabric that has developed over generations.

But many communities – Indigenous people, farmers and fishers, groups that have lived tightly connected to their environments for a long time – have deep stores of resilience from which to draw, says Elizabeth Marino, a sociologist and the lead author of the chapter on social transformations. "There is quite a lot of wisdom in place to adapt to and even mitigate climate change," she says. "It allows people to come up with solutions that fit the lives that they lead, and that's also a place of hope."

The fixes to climate change can make Americans' lives better

The fifth assessment lays out a stark picture of the climate challenges the U.S. faces. Keeping planetary warming to "well below" 2 degrees Celsius (3.6 degrees Fahrenheit), the goal of the international Paris Agreement, will require immediate, enormous cuts to fossil fuel emissions in the U.S and beyond. Keeping warming below 1.5 degrees Celsius (2.7 degrees Fahrenheit), an ambitious target written into the Agreement, will be even harder, the report says.

But it also points out many successful efforts underway to adapt to the new reality and to prevent worse outcomes.

"It's not the message that if we don't hit 1.5 degrees, we're all going to die," says Hayhoe. "It's the message that everything we do matters. Every 10th of a degree of warming we avoid, there's a benefit to that."

Addressing fossil fuel-driven climate change can also help people live healthier lives, stresses J. Jason West, the lead author on a chapter on air quality. Dialing back fossil fuel emissions would help prevent further climate change and also lessen the kinds of air pollution most harmful to human health." There really is a lot of opportunity to take action that would resolve both of those problems at the same time," West says.

There's been a subtle shift in the report's perspective since the last one, says Candis Callison, a sociologist and author of the report. There's now a clear acknowledgement, developed through years of rigorous research, that the fossil fuel-powered society the U.S. built over generations was profoundly unjust. Many pollution-producing coal or gas power plants were sited in communities of color rather than white communities, affecting people's health outcomes for generations. And decisions about land and water use for energy extraction often excluded tribal communities, with consequences still playing out today.

The transition forward can look different, she says. "Climate change actually provides us with an opportunity to address some of those inequities and injustices–and to respond to these impacts," Callison says. "That's really a powerful thing."

The Long Beach Unified School District is looking for a new operator to handle a major after-school program following the city of Long Beach’s decision not to participate in an attempt to save money.

Since 2002, the city’s Parks Department has helped anchor the initiative, known to families as WRAP. It provides free programming for hundreds of transitional-kindergarten through eighth-grade students across seven local campuses: Garfield, Edison, King, Grant, Lafayette, Burbank and Herrera.

Long Beach Unified officials stress that the vital student services will continue under a new operator this fall. It’s not clear yet who it will be and what, if any, changes they’ll make.

The city’s quiet retreat from the program has sparked deep anxiety among three full-time and 80 part-time municipal workers who now face potential layoffs.

Workers say they were first notified of the decision during a June 15 staff meeting with a city superintendent, where they were told their employment with the program would conclude on Aug. 15.

“Everybody was kind of caught off guard,” said one 13-year city employee based at an elementary school, who spoke on the condition of anonymity to protect her position. “I mean, again, I’ve been doing this for 13 years; we had people there that had been doing it over 20 years that had never moved sites.”

Today, the before- and after-school services are paid for primarily through the state-funded Expanded Learning Opportunities Program (ELOP), a combination of California’s After School Education and Safety (ASES) grant and specific ELOP apportionments.

Historically, the city was granted this funding by the school district without a formal bidding process, typically receiving roughly $15 per student plus administrative fees, which it supplemented with allocations from its own general fund.

This year, however, the school district was forced to overhaul its grant-funding process and consider bids to meet tightening state mandates for the program’s ELOP funding.

Shortly after, the city informed the school district it would not bid on the program.

City spokesperson Jennifer De Prez said the decision “was made so that the department can focus its limited financial resources” on other programs it runs.

The city is facing an estimated $61 million budget shortfall in the upcoming fiscal year — a deficit that top administrators warn makes citywide reductions inevitable.

The city could not immediately provide numbers on how much money it expected to save by ending its participation in the WRAP program. Last year, the city provided $193,254 of in-kind-services at its own expense on top of the program’s grant-funded budget, according to documents provided by De Prez.

Meanwhile, the school district went ahead with a bid application for a replacement operator on May 22. Proposals were due June 12 and are scheduled to go before the Board of Education for consideration at its July 15 meeting.

District officials emphasized that the state funding remains fully intact and that student services will continue without interruption.

The district and the city are also working on a joint letter to families detailing the transition, which is scheduled to be sent out soon.

But for the frontline staff, the transition has been destabilizing and abrupt.

These part-time employees, who work between 20 and 30 hours per week depending on the season, rotate through campuses where individual site enrollment ranges from 85 to 160 students.

The employee who spoke with the Post said that despite directives from supervisors to keep the changes quiet until future plans solidified, she chose to notify parents so they would have time to prepare.

“As a parent, I would want to know if it’s not the same people that I’ve trusted my kids with for years,” she said.

The long-term fate of the workforce remains unresolved, forcing many to look for employment elsewhere.

“As far as employment opportunities, they didn’t lay us off, they didn’t fire us, they just basically told us the contract with the schools will be done August 15,” the anonymous employee said. “Past that, we have no idea what’s going to happen.”

City officials say they will soon meet with representatives of the International Association of Machinists (IAM) union to discuss the workers’ future.

“We are committed to ensuring this process is transparent, informed by complete information, and focused on protecting both employees and the quality and continuity of the vital services the WRAP program provides to the Long Beach community,” said Sashi Muralidharan, a spokesperson with IAM 947.

Editor’s note: This story was updated with more information about the program’s cost to the city.

A community organization in Los Angeles is criticizing how the FBI enforced a strict no-drone policy around World Cup venues after federal agents disrupted a community gardening event in South L.A.

The incident took place the first Sunday of the tournament, while crowds were watching matches at the FIFA Fan Festival at the Los Angeles Coliseum. Nearby, the Los Angeles Neighborhood Land Trust was hosting a celebration for teenagers who had created a native plant garden on a patch of land that used to be an oil drilling site.

Then someone flew a drone to photograph the moment. Minutes later, Department of Homeland Security agents and Los Angeles police officers were on the scene, according to Bz Zhang, a project manager who was helping run the event. Soon the FBI arrived. They confiscated the drone and fined the person operating it.

The Neighborhood Land Trust was hosting a celebration for teenagers who had created a native plant garden on a patch of land that used to be an oil drilling site when authorities arrived.

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Wendy Salvador

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" We were unknowingly in violation of federal airspace, and we were told that we were a threat to national security," said Zhang, who witnessed the encounter.

The drone had violated temporary flight restrictions implemented for the World Cup. The Federal Aviation Authority has banned unauthorized drones within "3-nautical-mile radius and up to 3,000 feet above ground level" around stadiums on match days and also prohibited them around certain fan events, like the one at the Coliseum.

Since the tournament started in L.A., federal authorities have seized dozens of drones near SoFi Stadium and the Coliseum, according to the FBI. In total, more than 600 drones have been confiscated across the country.

The crackdown is part of an effort across all 11 U.S. host cities to identify and remove unauthorized drones from the skies around World Cup venues and fan events. Ahead of the tournament, FEMA awarded host cities $250 million specifically to combat drone usage.

"We knew we needed to act quickly to keep the World Cup safe from the rising threat of unmanned aircraft systems and that’s exactly what we did,” said Karen Evans, FEMA's acting cdministrator, in a statement announcing those funds.

But Zhang said that the incident at the garden represented the unintended consequences of hosting mega-events like the World Cup for ordinary community members.

" It's one thing to be aware of construction. … It's another to be expected as residents to know, to the 10th of a mile, that I'm in a particular zone and that, to the hour, I need to be in compliance," Zhang said.

Laura Eimiller, FBI spokesperson, disagreed. She said drone operators are responsible for knowing the rules and that every person in L.A. who had a drone confiscated during the World Cup also received a fine.

"There's been a zero-tolerance approach," Eimiller said.

Hiding out among the luxury beachfront condos in the Newport Beach neighborhood of Corona Del Mar is an outpost where scientists have been conducting important marine research for nearly a century.

And you can go check the place out for yourself.

A ‘magical’ marine station 

With its Spanish style architecture that includes a central tower and red-tiled roof, Caltech’s Kerckhoff Marine Laboratory looks like it’s been teleported in from another time and place.

Originally built as a boat and club house, it was purchased by Caltech in 1929 for use as a beachfront science outpost.

Victoria Orphan, James Irvine Professor of Environmental Science at Caltech and director of the Kerckhoff Marine Lab, said the place is one of the oldest running marine labs on the West Coast.

“There’s something just really magical about marine stations. They’re rustic, so it’s not like you’re going into a fully polished clean room. But that’s part of the charm and you really feel the history,” Orphan said.

One of her favorite spots? The tower. That’s where Orphan said some famous papers were written.

“Sometimes when I have writer’s block, I’ll go and sit in the tower and try to channel the scientists of old,” she told LAist.

That would include the work of Wheeler North, one of Orphan’s heroes. From 1962 to 2002, he conducted pioneering research on the ecology of kelp forests. Orphan said North’s work was instrumental for learning how an imbalance in the sea urchin population can decimate kelp forests.

These days that important research continues, with scientists at the lab looking at how microbes can capture carbon dioxide, mitigating global warming. They even have a 4-foot, bright yellow autonomous vehicle that scans the seafloor so scientists can learn more about seagrasses, which are important for oxygen creation and carbon capture, serve as fish nurseries and help protect the coastline from storm surge.

Kerckhoff Marine Laboratory in Corona del Mar

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Courtesy Caltech photo archive

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“In areas where you have seagrass, you get less sediment erosion [and] a little more protection of the property on land, which people who live on the coast care about,” Orphan explained.

Engineers from Jet Propulsion Laboratory are also interested in using autonomous vehicles in cooperation with the lab to see how they can help study the deep ocean right outside the harbor.

You can visit the lab to learn about all of the science going on there, with free open houses on Tuesdays and monthly ‘Science and Sunsets’ events that include dinner and cocktails at the historic outpost.

A pop-up book that’s seeking to break the world record for size has unfolded at the Central Library in downtown Los Angeles.

The art piece is 31 feet wide, more than 11 feet tall, and weighs in at 1,800 pounds.

Luceros y Penumbras, which roughly translates to “starlight and shadows,” is rooted in L.A. artist Daniel González’s experience visiting the library and his family in Mexico as a child.

“It's a knowledge tree that's been shaped by all these different things that I've learned at the library, about myself, about the city I grew up in, [and] about the town where my family's from,” González said.

The nonprofit Library Foundation of Los Angeles collaborated with the library to commission the piece as part of the Central Library’s centennial celebration.

The project is inspired, in part, by the library’s Toy Movable collection, an archive of more than 2,000 pop-up books.

“Normal pop-up books … they seem so simple, but something amazing pops out when you open the page,” said Todd Lerew, the foundation’s director of special projects. “That sort of childlike wonder that you feel that's persistent, even as an adult, is something that was really important to capture and dial up to 11 with this project.”

The origin of 'Luceros'

The foundation asked González in June 2025 to create a book that told the story of his personal relationship with the library. As González pondered questions including  ”What did the library do for me as a young person?" and "Why was I so attracted to it?" he thought about how knowledge was passed down in his family through the generations.

His grandmother told him stories about the stars above her farm near Teúl, Zacatecas, in Mexico. She said those that emerged at dawn — luceros — were among the most special because they signaled the start of a new day.

“ I looked at those stars … and the histories that my grandparents were sharing with me as these guiding lights,” González said. “Just like the library is a guiding light for many people.”

Daniel González's maternal grandmother, Isabel Gómez, told him stories about the creatures that lived near her farm, including owls, that could teach healing.

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Courtesy Daniel González

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González grew up blocks away from the Benjamin Franklin Library in Boyle Heights.

“ I spent summers there because it was literally the coolest place to be,” González said. “It just gave me the opportunity to explore anything that I had an interest in.”

Daniel González, as a child, after an unsuccessful attempt to make a kite after a trip to the library.  "My dad's like, 'I'm gonna take a picture of you so you can see what you look like when you get grumpy,'" he said.

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Courtesy Daniel González

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Later, he’d visit the Central Library during a middle school field trip and return on the bus to wander the stacks and ask the staff questions.

“ I'm really lucky that I met the people that nurtured that curiosity,” González said.

From sketches to ‘paper engineering’

First, González sketched the images, carved them into linoleum, printed them with ink and digitized them to add color and other details.

A few of Daniel González's tools. In the future, he plans to sell prints related to "Luceros y Penumbras."

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Mariana Dale

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LAist

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Matthew Reinhart, children’s book author, illustrator and “paper engineer,” was tasked with translating the images into three dimensions.

“ My job is really making mistakes,” Reinhart said. “Making mistakes, figuring out where they are and solving them and — of course — making them look good.”

The construction and the fabrication of the book took the work of more than 30 people over a series of months. At least a dozen people using giant poles capped with cushions turn the pages.

Luceros y Penumbras is four pages that open to create two scenes — one of the Central Library building and another of a sprawling tree with an I Spy-like collection of creatures and images throughout. The featured pages will change throughout the exhibition, which is open until mid-November.

There are at least a dozen different symbols throughout “Luceros y Penumbras."

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Mariana Dale

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LAist

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The sea turtle at the base of the tree is a reference both to the creatures that live in the San Gabriel River and to the original inhabitants of the L.A. basin. The Gabrielino-Tongva Tribe tells a story that connects the region’s earthquakes to the turtles.

“When we think of sea turtles, we think of these faraway places where they live, like tropical places,” González said. “But they exist here and they've had to adapt to a changing climate, a changing environment, and find places to call home, just as people do.”

Other images include:

• A star resting in an outstretched hand in honor of Octavia E. Butler, the science fiction writer who also spent time in the library. 
•  Quetzalcoatl, the feathered serpent Aztec deity and a frequent motif in East L.A.’s murals. 
• An owl, a symbol of knowledge associated with the Greek goddess Athena and the Roman goddess Minerva. 

González said the goal is for viewers to create their own narrative about what they see.

“ I just hope that people carry with them a sense of curiosity to further explore the things that I present, but also maybe something within them,” González said.

Visit the pop-up book

Central Library Centennial Festival

On display