Science
A Leading Memory Researcher Explains How to Make Precious Moments Last
Our memories form the bedrock of who we are. Those recollections, in turn, are built on one very simple assumption: This happened. But things are not quite so simple. “We update our memories through the act of remembering,” says Charan Ranganath, a professor of psychology and neuroscience at the University of California, Davis, and the author of the illuminating new book “Why We Remember.” “So it creates all these weird biases and infiltrates our decision making. It affects our sense of who we are.” Rather than being photo-accurate repositories of past experience, Ranganath argues, our memories function more like active interpreters, working to help us navigate the present and future. The implication is that who we are, and the memories we draw on to determine that, are far less fixed than you might think. “Our identities,” Ranganath says, “are built on shifting sand.”
But if memories are malleable, what are the implications for how we understand our “true” selves? At the risk of being pretentious, I’ll get philosophical for a second.
You’re not being pretentious. OK, good, because I always have this critical peer reviewer in the back of my head saying, “Don’t say that!” But your question gets to a major purpose of memory, which is to give us an illusion of stability in a world that is always changing. Because if we look for memories, we’ll reshape them into our beliefs of what’s happening right now. We’ll be biased in terms of how we sample the past. We have these illusions of stability, but we are always changing. And depending on what memories we draw upon, those life narratives can change.
Tell me more about what you mean when you say “illusion.” I probably overstated it with the word “illusion,” but there is an illusionary component. I think we have this illusion that much of the world is cause and effect. But the reason, in my opinion, that we have that illusion is that our brain is constantly trying to find the patterns. One thing that makes the human brain so sophisticated is that we have a longer timeline in which we can integrate information than many other species. That gives us the ability to say: “Hey, I’m walking up and giving money to the cashier at the cafe. The barista is going to hand me a cup of coffee in about a minute or two.” This is everyday fortunetelling that we do. There’s nothing that says that the barista won’t throw this coffee at me. There is this illusion that we know exactly what’s going to happen, but the fact is we don’t. Memory can overdo it: Somebody lied to us once, so they are a liar; somebody shoplifted once, they are a thief. If people have a vivid memory of something that sticks out, that will overshadow all their knowledge about the way things work. So there’s kind of an illusion there.
If what we’re remembering, or the emotional tenor of what we’re remembering, is dictated by how we’re thinking in a present moment, what can we really say about the truth of a memory? I think of memory more like a painting than a photograph. There’s often photorealistic aspects of a painting, but there’s also interpretation. As a painter evolves, they could revisit the same subject over and over and paint differently based on who they are now. We’re capable of remembering things in extraordinary detail, but we infuse meaning into what we remember. We’re designed to extract meaning from the past, and that meaning should have truth in it. But it also has knowledge and imagination and, sometimes, wisdom.
Charan Ranganath fitting an EEG cap (to read electrical signals from the brain) on a volunteer in 2013.
UC Davis
I think everyone has seemingly inexplicable memories that stick with us. One for me is, a lifetime ago, sitting in an internship and locking eyes with a person across the room — whom I never spoke to. This two-second interaction is still kicking around in my head 20 years later. What could explain that? Neuroscience is terrible for picking out any one thing and saying why it happened. But if you think about it from an evolutionary perspective, memory, often, is educated guesses by the brain about what’s important. So what’s important? Things that are scary, things that get your desire going, things that are surprising. Maybe you were attracted to this person, and your eyes dilated, your pulse went up. Maybe you were working on something in this high state of excitement, and your dopamine was up. Maybe she had a T-shirt on, and it was like, “Oh, I know about that.” It could be any of those things, but they’re all important in some way, because if you’re a brain, you want to take what’s surprising, you want to take what’s motivationally important for survival, what’s new.
On the more intentional side, are there things that we might be able to do in the moment to make events last in our memories? In some sense, it’s about being mindful. If we want to form a new memory, focus on aspects of the experience you want to take with you. If you’re with your kid, you’re at a park, focus on the parts of it that are great, not the parts that are kind of annoying. Then you want to focus on the sights, the sounds, the smells, because those will give you rich detail later on when you remember it. Another part of it, too, is that we kill ourselves by inducing distractions in our world. We have alerts on our phones. We check email habitually. So you don’t remember being there, because to some extent you were never really there in the first place. If you set time with your child, don’t check email, and turn off your alerts. That’s the idea. Technology can be helpful for memory, but usually not in the way we use it. You’re not really there if you’re mindlessly taking pictures, because it takes over the experience. When we go on trips, I take candid shots. These are the things that bring you back to moments. If you capture the feelings and the sights and the sounds that bring you to the moment, as opposed to the facts of what happened, that is a huge part of getting the best of memory.
I often find myself going back to music that I associate with melancholy memories. Yeah, I mean, you’ve got a legion of Smiths fans all over the world who do that.
Ranganath speaking to graduate students in the University of California, Davis, neuroscience program in January.
Sasha Bakhter/UC Davis
In the book, you say this concert is a central memory. It was.
When do you think it happened? It must have been 1985.
People get stuck in memories, whether they’re traumatic or more benignly negative. What are ways people can get unstuck? It’s very hard. You know, the training environment I was in was very down on psychoanalysis, but it always comes back to memory. A lot of that benefit is from the sharing of memories. Maybe it’s a sad memory, but I’m telling you with the goal of helping me get over it. That in and of itself changes my perspective. We know that people tailor their message for the listener. Then you reflect it back to me and reorganize it as an outsider. Once we go back and forth, we’re updating the memory to something that’s no longer my own. It’s now shared. When you tell someone, “You shouldn’t be ashamed,” it changes that whole relationship with the past. The first patient I ever did therapy with, he had a driving phobia. He worked through the behavior-therapy part, which is just drive, drive, drive until you habituate that biological fear response. But he didn’t feel better. Eventually he told me that he had a memory. How much of this was true, how much of it wasn’t, I didn’t know, but it didn’t matter. He was gay, and he came out of the closet with his dad and got into an argument with him and then was in the car afterward and got into a car accident.
Pretty clear! Yeah, exactly. It was about processing that memory and what it meant to him. He hadn’t told this to anyone; I don’t know that he had even thought about it that much. That was deep for me.
Do you think there is some core unchanging self? Something that makes us us? Or is it all just this flowing assemblage of interpretations of memories that make the present make sense? Is that sense of self static? I would say that some parts of it are. Memory gives us the power to shift our sense of who we are. If you believe you’re a failure, a lot of the power of thinking positive is remembering those times when you weren’t and being able to supplement those beliefs. There’s a dynamic sense of the self. I grew up in an immigrant family under challenging circumstances, and that part of myself is locked away from most anyone I interact with. We have these little compartments that are rooted somewhat in memory that we can access at different moments.
This interview has been edited and condensed from two conversations.
Science
A push to end a fractured approach to post-fire contamination removal
The patchwork efforts to identify and safely remove contamination left by the 2025 Eaton and Palisades fires has been akin to the Wild West.
Experts have given conflicting guidance on best practices. Shortly after the fires, the federal government suddenly refused to adhere to California’s decades-old post-fire soil-testing policy; California later considered following suit.
Meanwhile, insurance companies have resisted remediation practices widely recommended by scientists for still-standing homes.
A new bill introduced this week by state Assemblymember John Harabedian (D-Pasadena) aims to change that by creating statewide science-based standards for the testing and removal of contamination deposited by wildfires — specifically within still-standing homes, workplaces and schools, and in the soil around those structures.
“In a state where we’ve had a number of different wildfires that have happened in urban and suburban areas, I was shocked that we didn’t have a black-and-white standard and protocol that would lay out a uniform post-fire safety standard for when a home is habitable again,” Harabedian said.
The bill, AB 1642, would task the state’s Department of Toxic Substances Control with creating standards by July 1, 2027. The standards would only serve as guidance — not requirements — but even that would be helpful, advocates say.
“Guidance, advisories — those are extremely helpful for families that are trying to return home safely,” said Nicole Maccalla, who leads data science efforts with Eaton Fire Residents United, a grassroots organization addressing contamination in still-standing homes. “Right now, there’s nothing … which means that insurance companies are the decision-makers. And they don’t necessarily prioritize human health. They’re running a business.”
Maccalla supports tasking DTSC with determining what levels of contamination pose an unacceptable health risk, though she does want the state to convene independent experts including physicians, exposure scientists and remediation professionals to address the best testing procedures and cleanup techniques.
Harabedian said the details are still being worked out.
“What’s clear from my standpoint, is, let’s let the public health experts and the science and the scientists actually dictate what the proper standards and protocol is,” Harabedian said. “Not bureaucrats and definitely not insurance companies.”
For many residents with still-standing homes that were blanketed in toxic soot and ash, clear guidance on how to restore their homes to safe conditions would be a much welcome relief.
Insurance companies, environmental health academics, and professionals focused on addressing indoor environmental hazards have all disagreed on the necessary steps to restore homes, creating confusion for survivors.
Insurance companies and survivors have routinely fought over who is responsible for the costs of contamination testing. Residents have also said their insurers have pushed back on paying for the replacement of assets like mattresses that can absorb contamination, and any restoration work beyond a deep clean, such as replacing contaminated wall insulation.
Scientists and remediation professionals have clashed over which contaminants homeowners ought to test for after a fire. Just last week, researchers hotly debated the thoroughness of the contamination testing at Palisades Charter High School’s campus. The school district decided it was safe for students to return; in-person classes began Tuesday.
Harabedian hopes the new guidelines could solidify the state’s long-standing policy to conduct comprehensive, post-fire soil testing.
Not long after the federal government refused to adhere to the state’s soil testing policy, Nancy Ward, the former director of the California Governor’s Office of Emergency Services, had privately contemplated ending state funding for post-fire soil testing as well, according to an internal memo obtained by The Times.
“That debate, internally, should have never happened,” Harabedian said. “Obviously, if we have statewide standards that say, ‘This is what you do in this situation,’ then there is no debate.”
Science
Expiration of federal health insurance subsidies: What to know in California
Thousands of middle-class Californians who depend on the state-run health insurance marketplace face premiums that are thousands of dollars higher than last year because enhanced federal subsidies that began during the COVID-19 pandemic have expired.
Despite fears that more people would go without coverage with the end of the extra benefits, the number enrolling in Covered California has held steady so far, according to state data.
But that may change.
Jessica Altman, executive director of Covered California, said that she believes the number of people dropping their coverage could increase as they receive bills with their new higher premiums in the mail this month. She said better data on enrollment will be available in the spring.
Altman said that even though the extra benefits ended Dec. 31, 92% of enrollees continue to receive government subsidies to help pay for their health insurance. Nearly half qualify for health insurance that costs $10 or less per month. And 17% of Californians renewing their Covered California policies will pay nothing for premiums if they keep their current plan.
The deadline to sign up for 2026 benefits is Saturday.
Here’s help in sorting out what the expiration of the enhanced subsidies for insurance provided under the Affordable Care Act, often called Obamacare, means in the Golden State.
What expired?
In 2021, Congress voted to temporarily to 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 the 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.
How could costs change this year for those enrolled in Covered California?
Anyone with income above 400% of the federal poverty level no longer receives subsidies. And many below that level won’t receive as much assistance as they had been receiving since 2021. At the same time, fast-rising health costs boosted the average Covered California premium this year by more than 10.3%, deepening the burden on families.
How much would the net monthly premium for a Los Angeles couple with two children and a household income of $90,000 rise?
The family’s net premium for the benchmark Silver plan would jump to $699 a month this year from $414 a month last year, according to Covered California. That’s an increase of 69%, costing the family an additional $3,420 this year.
Who else could face substantially higher health bills?
People who retired before the Medicare-qualifying age of 65, believing that the enhanced subsidies were permanent, will be especially hit hard. Those with incomes above 400% of the federal poverty level could now be facing thousands of dollars in additional health insurance costs.
How did enrollment in Covered California change after the enhanced subsidies expired on Dec. 31?
As of Jan. 17, 1,906,033 Californians had enrolled for 2026 insurance. That’s less than 1% lower than the 1,921,840 who had enrolled by this time last year.
Who depends on Covered California?
Enrollees are mostly those who don’t have access to an employer’s health insurance plan and don’t qualify for Medi-Cal, the government-paid insurance for lower-income people and those who are disabled.
An analysis by KFF, a nonprofit that provides health policy information, found that nearly half the adults enrolled in an ACA plan are small-business owners or their employees, or are self-employed. Occupations using the health insurance exchanges where they can buy an ACA plan include realtors, farmers, chiropractors and musicians, the analysis found.
What is the underlying problem?
Healthcare spending has been increasing faster than overall inflation for years. The nation now spends more than $15,000 per person on healthcare each year. Medical spending today represents about 18% of the U.S. economy, which means that almost one out of every five dollars spent in the U.S. goes toward healthcare. In 1960, health spending was just 5% of the economy.
What has California done to help people who are paying more?
The state government allocated $190 million this year to provide subsidies for those earning up to 165% of the federal poverty level. This money will help keep monthly premiums consistent with 2025 levels for those with an annual income of up to $23,475 for an individual or $48,225 for a family of four, according to Covered California.
Where can I sign up?
People can find out whether they qualify for financial help and see their coverage options at the website CoveredCA.com.
What if I decide to go without health insurance?
People without insurance could face medical bills of tens of thousands of dollars if they become sick or get injured. And under California state law, those without coverage face an annual penalty of at least $900 for each adult and $450 for each child.
Science
Department of Education finds San Jose State violated Title IX regarding transgender volleyball player
The U.S. Department of Education has given San José State 10 days to comply with a list of demands after finding that the university violated Title IX concerning a transgender volleyball player in 2024.
A federal investigation was launched into San José State a year ago after controversy over a transgender player marred the 2024 volleyball season. Four Mountain West Conference teams — Boise State, Wyoming, Utah State and Nevada-Reno — each chose to forfeit or cancel two conference matches to San José State. Boise State also forfeited its conference tournament semifinal match to the Spartans.
The transgender player, Blaire Fleming, was on the San José State roster for three seasons after transferring from Coastal Carolina, although opponents protested the player’s participation only in 2024.
In a news release Wednesday, the Education Department warned that San José State risks “imminent enforcement action” if it doesn’t voluntarily resolve the violations by taking the following actions, not all of which pertain solely to sports:
1) Issue a public statement that SJSU will adopt biology-based definitions of the words “male” and “female” and acknowledge that the sex of a human — male or female — is unchangeable.
2) Specify that SJSU will follow Title IX by separating sports and intimate facilities based on biological sex.
3) State that SJSU will not delegate its obligation to comply with Title IX to any external association or entity and will not contract with any entity that discriminates on the basis of sex.
4) Restore to female athletes all individual athletic records and titles misappropriated by male athletes competing in women’s categories, and issue a personalized letter of apology on behalf of SJSU to each female athlete for allowing her participation in athletics to be marred by sex discrimination.
5) Send a personalized apology to every woman who played in SJSU’s women’s indoor volleyball from 2022 to 2024, beach volleyball in 2023, and to any woman on a team that forfeited rather than compete against SJSU while a male student was on the roster — expressing sincere regret for placing female athletes in that position.
“SJSU caused significant harm to female athletes by allowing a male to compete on the women’s volleyball team — creating unfairness in competition, compromising safety, and denying women equal opportunities in athletics, including scholarships and playing time,” Kimberly Richey, Education Department assistant secretary for civil rights, said.
“Even worse, when female athletes spoke out, SJSU retaliated — ignoring sex-discrimination claims while subjecting one female SJSU athlete to a Title IX complaint for allegedly ‘misgendering’ the male athlete competing on a women’s team. This is unacceptable.”
San José State responded with a statement acknowledging that the Education Department had informed the university of its investigation and findings.
“The University is in the process of reviewing the Department’s findings and proposed resolution agreement,” the statement said. “We remain committed to providing a safe, respectful, and inclusive educational environment for all students while complying with applicable laws and regulations.”
In a New York Times profile, Fleming said she learned about transgender identity when she was in eighth grade. “It was a lightbulb moment,” she said. “I felt this huge relief and a weight off my shoulders. It made so much sense.”
With the support of her mother and stepfather, Fleming worked with a therapist and a doctor and started to socially and medically transition, according to the Times. When she joined the high school girls’ volleyball team, her coaches and teammates knew she was transgender and accepted her.
Fleming’s first two years at San José State were uneventful, but in 2024 co-captain Brooke Slusser joined lawsuits against the NCAA, the Mountain West Conference and representatives of San José State after alleging she shared hotel rooms and locker rooms with Fleming without being told she is transgender.
The Education Department also determined that Fleming and a Colorado State player conspired to spike Slusser in the face, although a Mountain West investigation found “insufficient evidence to corroborate the allegations of misconduct.” Slusser was not spiked in the face during the match.
President Trump signed an executive order a year ago designed to ban transgender athletes from competing on girls’ and women’s sports teams. The order stated that educational institutions and athletic associations may not ignore “fundamental biological truths between the two sexes.” The NCAA responded by banning transgender athletes.
The order, titled “Keeping Men Out of Women’s Sports,” gives federal agencies, including the Justice and Education departments, wide latitude to ensure entities that receive federal funding abide by Title IX in alignment with the Trump administration’s view, which interprets a person’s sex as the gender they were assigned at birth.
San José State has been in the federal government’s crosshairs ever since. If the university does not comply voluntarily to the actions listed by the government, it could face a Justice Department lawsuit and risk losing federal funding.
“We will not relent until SJSU is held to account for these abuses and commits to upholding Title IX to protect future athletes from the same indignities,” Richey said.
San José State was found in violation of Title IX in an unrelated case in 2021 and paid $1.6 million to more than a dozen female athletes after the Department of Justice found that the university failed to properly handle the students’ allegations of sexual abuse by a former athletic trainer.
The federal investigation found that San José State did not take adequate action in response to the athletes’ reports and retaliated against two employees who raised repeated concerns about Scott Shaw, the former director of sports medicine. Shaw was sentenced to 24 months in prison for unlawfully touching female student-athletes under the guise of providing medical treatment.
The current findings against San José State came two weeks after federal investigators announced that the California Community College Athletic Assn. and four other state colleges and school districts are the targets of a probe over whether their transgender participation policies violate Title IX.
The investigation targets a California Community College Athletic Assn. rule that allows transgender and nonbinary students to participate on women’s sports teams if the students have completed “at least one calendar year of testosterone suppression.”
Also, the Education Department’s Office of Civil Rights has launched 18 Title IX investigations into school districts across the United States on the heels of the Supreme Court hearing oral arguments on efforts to protect women’s and girls’ sports.
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