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A conversation with Manjula Martin about her new book The Last Fire Season.

When Manjula Martin was growing up in Northern California in the 1980s, wildfires weren’t something she thought about much. She knew about disaster — the magnitude 6.9 Loma Prieta earthquake of 1989, which killed 63 people and injured thousands, hit when she was a teenager — but fire, she thought, was just something that happened up in the mountains in the summer.
Things are different now. In 2017, Martin left the high prices of San Francisco for the redwoods of Sonoma County. The night of their housewarming party, a firestorm swept through Santa Rosa and Sonoma and Napa counties. The next year — 5 years ago this week — the Camp Fire, the deadliest and most destructive fire in the state’s history, destroyed the town of Paradise and killed 85 people.
In her new book, The Last Fire Season (out on January 16 next year), Martin writes about the fires that swept through California in 2020, weaving her personal story with that of fire in California writ large. It’s a beautiful book, and I called her up to talk about her relationship with fire and how we can learn to live with the changing world. Our conversation has been edited for length and clarity.
The book opens in 2020, which was a year of multiple fire complexes. Was that the first time fire made itself known in the immediate vicinity of your home?
No, it wasn’t. But it was the first time that I realized that it wasn’t an anomaly.
We had horrible fires near my area in 2017. In 2018, the Camp Fire happened in Northern California, which was like a four-hour drive away, but the smoke from that fire lingered in the Bay Area for weeks. And then in 2019, the Kincade fire was a huge fire up here in Sonoma, and the entire west of the county was evacuated in basically the course of a night, including ourselves.
Then in 2020, the Lightning Complex fires happened in late August, which is what the book starts with. And that was the moment where I personally was like, “oh, this is going to keep happening.”
Before that a natural disaster to me felt like a thing that happened once and then that’s it, right? It wasn’t connected to larger things for me. But the fact is that the new wildfires that we’re having are bigger and hotter and far more destructive than the previous wildfires we’ve had, and 2020, which is probably far too late, was the year that I personally put that all together under the name of climate change. It wasn’t the first year I knew about fire, but it was the moment I realized that I was going to be living with fire for the rest of my life.
I was struck by your description of the 2020 fires and the ways that COVID complicated your experience of them. It reminded me of the concept of cascading events; it was striking to read about how your go bag was filled with these N95 masks that were there for the sake of the fires, but also, of course, turned out to have utility for this other thing that you’re dealing with at the same time.
That was one of the reasons why I chose to center the book around 2020. I think that was a moment where it became clear for a lot of people that disasters don’t take their turn. When it was happening, I felt it was a historic moment.
You named your book The Last Fire Season. But, of course, it wasn’t the last.
Unfortunately not. The book began as an essay, and since I was writing it in 2021 I thought I was writing about the last fire season I had experienced. But then I realized that it was actually a really great title for a book. It’s pretty commonly acknowledged now that in the North American West, fire season isn’t really a thing anymore. Now fire authorities talk about having a fire year.
That is directly linked to the changing of the weather and the climate. But for me, the deeper meaning of it is this idea that fire being seasonal also sort of implies that it’s temporary, and that it’s going to go away. But really it’s not seasonal, it’s part of this land. And we’re going to be living with it forever.
There’s a point in your book where you write that the California ecosystem was fire-adapted, but also that fire is changing. What do you mean by that?
Since time immemorial, California’s ecosystems — from oak woodlands to redwood forests to grasslands and chaparral — evolved with fire as part of their natural cycle. Fire is actually something that helps the cycle of the landscape reset and continue.
And this was something that Indigenous people knew and really sort of harnessed and used in the way that they tended the lands. But the genocide of Indigenous people in California really sort of stopped that cycle, as is the case with colonialism in most places.
Right, you have a chapter about the Indigenous history of fire in California and the suppression of fire both through violence against Indigenous communities and also a long history of policies against fire.
Yeah, the colonial policies of managing the land in California had been what they call ”total fire exclusion,” which is basically the idea that all fire is bad and we need to extinguish fires right away. There was a policy in place called the 10 AM policy that actually said every new forest fire needs to be extinguished by 10 AM the next morning. And, you know, there are a lot of reasons why that happened, including profits and fear and prioritizing human habitat and recreation over the landscape. But the result is that the landscapes here are actually neglected at this point, 150 years after colonization.
You wrote at one point about going to prescribed burns and there was a section that really stood out to me:
Fire is exuberant. It’s joyous. It dances. I can see why people joke that all firefighters are secret pyros. It’s so much fun.
I fully relate to this feeling. Has going to prescribed burns changed your own relationship with fire?
Good fire and cultural fire, which is generally the term we use when we’re talking about Indigenous use of fire, have radically changed my feelings about fire. Humans have evolved with fire, and the more I engage with fire, the more I learn about it, the more I understand its role in both the land and the history of this place, the less afraid I feel.
You write about your own experience with getting a hysterectomy and how that affected your life afterwards, and I thought that was an interesting choice. You could have written a book that was just about fire, and we could have never learned about your hysterectomy. But you chose to include it. Can you tell me a little bit about how that came to happen?
I could have written a straight journalistic look at wildfire right now or at the 2020 fire season specifically. And that was something I toyed with. But I ultimately realized, in thinking about this idea of cascading disasters, that they’re all happening while people are living their lives. Climate change, wars, economic ruin are all happening on top of whatever else is going on in your life. So I thought this part of my life was worth including.
The hysterectomy, and many associated health crises, led me to having chronic pain. And one of the only things that helped me with that was gardening. For me, the physical act of literally touching the land, being in this dialogue with the environment and the ecosystem around me, was the thing that helped me recover from this health crisis. I wasn’t quite well. And more importantly, nature wasn’t quite well. And gardening in this environment is what really made it click for me that this environment is going through a crisis as well.
That garden was partly how you knew about the oncoming fires in 2020, right?
Yeah, when the Lightning Complex fires started, I was out in my garden watering the roses. I saw this little black object on the ground, and when I leaned down and picked it up I saw it was a leaf of a California bay laurel tree. And it was burned black, but it was still whole. It had been blown on the wind and landed in my garden. It was sort of like a messenger, telling me that a few miles away these trees were burning.
Bay trees are a natural part of the forest understory here, but they are highly flammable. They’re basically made of oil, and they serve as what’s called a ladder fuel; if fire gets in that tree, it will shoot up it and then can get into the crowns of taller trees like redwoods or oaks that would normally be more fire resistant. It’s literally a fire spreader. Anyone who lives in the area will tell you that when there’s a fire nearby it rains burnt leaves.
Parts of the book are unexpectedly written in the past tense. You write, for example, that “Northern California was a very large place,” but the depictions of events in the past or future are written in the present tense. Was that intentional? Did you mean to contract the idea of Northern California?
I absolutely did. The convention in nonfiction is to write events in the past tense, but to phrase facts, or things that are still true, in the present tense. I felt like it was important to acknowledge that the things we take as granted, these truths about the way the environment works, might not always remain that way. It was also partly a pragmatic decision, because I didn’t know what would happen before the book came out. What if my house burned down before that, or if I have to move? Things are just so chaotic right now.
The other time I break with convention is when I write about Indigenous nations and Indigenous management practices. I intentionally used the present tense there as a way to push back against the trope of a lot of non-Indigenous writers portraying Indigenous people and worldviews as extinct when in fact they’re very, very alive.
Throughout the book you’re constantly talking to your partner about whether to stay in your home or move away to a “safer” area. I think it can be really hard for people who don’t live in areas under threat to grasp just how hard the concept of migrating really is.
Right, that’s such a common binary: to stay or go. And the reality is actually a lot messier. I’m fortunate to even have the choice of whether to stay or go; I am a person who has a lot of different privileges. I have resources, I have friends, I’m educated, I’m white.
Most people don’t willingly leave their homes unless things are really bad. But it’s never really all bad: Sometimes there’s extreme weather and disasters, and then there isn’t. It’s up and down. There’s a lot of talk around what the perfect solution is, where the safe places are. And the truth is that nowhere is safe because of climate change.
For me, the point of living at this moment on this planet is that it’s messy. It’s full of grief, it’s full of joy and beauty, and it’s also dangerous. There may be a time when I leave this place, for a variety of reasons. But I think the idea that you can run away from climate change is false.
Something I’ve learned a lot from talking with people who are deeply connected to the land here and who work with fire is that you have a responsibility to the place where you live. If I love this place so much, what do I owe it? The idea of tending a place for its overall health, not just for my personal survival, is very powerful.
Right, at one point you write about you and your partner thinking about doing prescribed burns in the woods near you to help reduce the risk of more fires.
We have thought a lot about the idea of reintroducing good fire where we live. Our neighborhood has been getting together and doing work days where we clear fuels from the forest floor together. And it’s really proof of how much work is needed, because you can clear brush and cut dead limbs off trees for a day with a group of 15 people, and then you look at this tiny quarter acre that you’ve worked on, and it still needs so much more work.
Stewardship is a constant act.
Absolutely. And it might not be perfect, and honestly it might not make a difference. These woods might still burn. But if and when they do burn, they are going to be healthier afterwards because the fire is going to be healthier.
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Tales from a day of “thoughtful dialogues on energy, climate change, and human lives” on Day 3 of New York Climate Week.
“I’m here because I love thoughtful dialogues on energy, climate change, and human lives,” Energy Secretary Chris Wright told my colleague Robinson Meyer this afternoon. “That’s been a passion my whole life, and nothing will change that.”
It’s our passion too — and was a defining theme of Heatmap House on Wednesday at New York Climate Week, with 27 sessions across topics including clean energy development, U.S. climate policy, the future of mobility, climate tech, and reindustrialization. From Wright backpedaling on President Trump’s embrace of a diesel export ban to former Vice President Al Gore asserting that 2026 might mark “the positive tipping point on climate,” it was a full day of news, contrarian opinions, juicy predictions, and lots and lots of coffee (consumed by yours truly).
Early in the day, Carlos Araque, the CEO and co-founder of Quaise, an advanced geothermal company, started things off by addressing the elephant in the room: potentially imminent movement on permitting reform. “It’s always easy to be picky and want for more,” he acknowledged, although he added that “my ask has always been — as far back as 2018 — if you can do for geothermal what you do for oil as in terms of regulatory permitting exclusions, then you’re moving 90% of the way to the goal. So that’s happening — that’s slowly and surely happening.”
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New Jersey Governor Mikie Sherrill also spoke about permitting reform at a local scale. “You cannot simply say to people, ‘Sorry, your bills are just going to keep skyrocketing,’” she stressed. “That is not the answer, which is why we’ve acted so aggressively. I approved 18 solar and battery storage projects in the first six months [of my term]. We knew the federal credits were going to run out if we did not get that done, so that’s why we had to take on permitting reform right away to make sure we were growing that.”
And while Jane Flegal, the principal at Flegal Energy Advisors, didn’t have any secret insight into the potential deal, she broke down her predictions into three buckets: reforms to conventional environmental statutes such as the National Environmental Policy Act, the Clean Water Act, and the National Historic Preservation Act; transmission, “which, no one knows what’s in there, but we all know what was in the Manchin deal, and I think we can and should expect something at least that ambitious;” and permitting certainty, which would constrain executive power to cancel permits after they’ve been issued.
Chris Hayes, the host of All In with Chris Hayes on MS NOW and a former climate reporter, took the stage just after Gore, who marked the 20-year anniversary of his Academy Award-winning documentary An Inconvenient Truth. Like Gore, Hayes was in a reflective mood. “I think to some degree, we’re kind of moving forward in this understanding that all of us are implicated in the system that’s going to change very slowly over time,” he said, calling it one of the lessons of the past 20 years. “But I think there was a high-water mark of consumer activism that is sort of gone.”
Then, of course, there was Wright. The energy secretary — whom climate insiders have described to us as the biggest climate villain in the Trump administration after Trump himself — talked to Rob about as many fuels as they could cover. Wind: “There have been very spirited dialogues in the administration about this. I do believe a successful permitting reform thing changes the playing field for anything you want to build in this country, including wind.” Nuclear: “Our thing is just to try to get it back on its feet and get out of the way.” Natural gas: “Gas in my lifetime is going to be the American energy superpower for sure, but you never want all your eggs in one basket.” Batteries: “I’m all in.” And EVs: “Should we have the broader America subsidizing, you know, the habits of wealthy people? I don’t think we should.”
Electric vehicles also came up in our mobility session, of course, along with other forms of mobility including ferries, subways, and rail. “It’s not something we talk about very much in the U.S.,” Laura Fox, the co-founder and managing partner of Streetlife Ventures, told me, adding that “we have a really great rail freight network that is underutilized and that typically saves shippers 30% to 40% when they’re shipping goods in the current environment.” (Representative Mike Levin of California also shared that if he could only connect two places in his proposed giant high-performance rail system, “I’d like to see the line between Los Angeles and San Diego solidified.”)
The evening wrapped with a focus on reindustrialization. Tom Steyer, the co-executive chair of Galvanize Solutions, told us he’s doing fine after his unsuccessful bid for California governor. (Nothing a trip to Tahoe with the family couldn’t cure.) He also shared that the climate movement may have lessons for the modern movement opposing AI and data centers. The world’s richest companies can’t just “come in and take people’s water, especially at a time when people are so water insecure,” he stressed. “How could that possibly be right?”
AI — and water — also came up in conversation with Emilio Tenuta, the senior vice president and chief sustainability officer of Ecolab, which provides industrial and commercial water and hygiene solutions. (Ecolab also sponsored our reindustrialization section.) He argued that “what we really need to focus on is the Water Efficiency Index” when evaluating, for example, semiconductor fabrication plants, because it contextualizes water use in more absolute terms than traditional metrics.
Page Crahan, general manager of Tapestry, an Alphabet X moonshot project that uses AI to develop a model of the grid’s electricity network, zeroed in on how best to use artificial intelligence. “We had 10 years to build what it took us 110 years to build globally” in order to meet anticipated energy demand, she told my colleague Jael Holzman. “And that was in 2023, before data centers.” For “computationally intensive challenges, data-heavy challenges, and certainly running simulations and insights for a system this size,” AI is a good use case, she said.
Tapestry is using its models in partnership with PJM Interconnection (as we’ve covered here at Heatmap) — and speaking of PJM, its executive director of strategic policy and external affairs, Asim Haque, spoke to my colleague Matthew Zeitlin next. “If you do not bring your own new capacity, we are going to curtail you before we curtail your average residential consumer for sure,” he said, adding, “this is a concept that is pending in front of the FERC right now. We can talk about carrots. We can talk about sticks. I don’t know which one this is. I think from the data center perspective, it’s likely a stick.”
Josh Parker, the head of sustainability at Nvidia, rounded the day out on a positive note. “The good news is, we are very quickly unlocking new capacity with clean energy,” he said, including developing new clean energy technologies like advanced fission and geothermal. “All of these technologies are benefiting from AI, and so that, coupled with the fact that data center operators with AI factories generally are some of the largest consumers of clean energy and are still are looking for all the clean energy they can, leads me to believe — and I think this is the most credible forecast — that very soon we’re going to see all of that convert over to clean as soon as we can get through the supply constraints that we’re currently in.”
If you were with us in person, thank you again. You’re what made our event one to remember. And if you weren’t able to join us this year — we hope to see you in 2027.
But wait! Before I send you on your way, you can find all of our coverage of the day below along with some additional quotes from some of my favorite conversations:
The Commonwealth Fusion Systems CEO made his case at Heatmap House.
Without billions in new federal investment the United States may lose its pole position in the global race to be the first nuclear fusion superpower, Commonwealth Fusion Systems CEO Bob Mumgaard told attendees at Heatmap House in New York City.
When asked onstage whether Commonwealth Fusion could still develop its fusion aspirations at scale without U.S. government financing, Mumgaard said: “I think so – it’s a question of the timing and the place.” Then he suggested that the company — and the industry — might go elsewhere if the country doesn’t put more capital into the growing sector. “There are offers on the table to build nuclear fission power plants not in the United States, so we can do that.”
You’d be forgiven if you thought Commonwealth and nuclear fusion was already doing well. The Massachusetts-based pioneer in fusion technologies raised $1 billion in new investment just a couple months ago. Generally speaking, innovation in nuclear power is incredibly popular in Congress, which has an influential bipartisan Fusion Energy Caucus. Commonwealth has received public support from the Trump administration’s Energy Department, as has one of the Heatmap House sponsors, Inertia.
But we’re talking about nuclear fusion, a still-futuristic form of energy generation seeking to harness the power of stars exploding in contained environments. It’s an insanely promising tech moonshot.
Mumgaard said the company is aiming for its tech to provide electrons onto the grid by the 2030s. He also said a Fusion Industry Association request to Congress and the Trump administration for $10 billion of investment might be what’s needed for that power to be American first.
“We debated that [amount] with the industry association, and you have to say what gets the job done. It’s a disservice to lowball what’s needed,” he told my colleague Katie Brigham. “This is a very important thing. It’s an entirely new industry. Let’s treat it as such.”
He added his view that U.S. fusion development is essentially an energy security maneuver, and that competition with China on fusion should be seen as parallel to the race for dominance in artificial intelligence.
“Think about what it means in a technological race. Power is the thing that powers the next economy, right?” Mumgaard said. “All the geostrategic strife we have right now is about power in the form of natural resources. Who has them? What are they? What boats are they on through what body of water? Fusion takes all of that off the table.”
Representative Mike Levin, It’s Electric, Rivian, and more showed up for the mobility session at Heatmap House.
On the surface, the climate case for electric vehicles is simple: Battery-powered cars can eliminate our need to burn dirty gasoline and diesel, and as more renewables come onto the grid, they’ll only run more and more cleanly. But the benefits that can be gained from electrifying the vehicle fleet run far deeper, a case that a variety of speakers made at Heatmap House on Wednesday as part of New York Climate Week.
Andrew Peterman, director of advanced energy solutions at the EV maker Rivian, explained how electric vehicles are becoming a multi-tiered grid solution. Rivian itself is cooperating with drivers and utilities to create automatic smart charging so that EVs can charge when energy is abundant and inexpensive, saving the user money — in some cases as much as $1,000 per year — and easing strain on the grid. Doing so helps to keep electricity prices down, which is good for the country and for the bottom line of an electric vehicle maker.
“Our ability to sell and give people value out of an electric vehicle can only be enabled if we transform the grid to be able to be affordable, reliable, and cleaner for everyone,” Peterman told Heatmap deputy editor Jillian Goodman. “We need to use our role in the energy system to enable customers to get more value out of the grid. So everything we do is about grid transformation to enable electric vehicles to have an even stronger and stronger value proposition. When we bring down electricity costs, that brings down the total cost of ownership for our vehicle owners.”
Of course, energy can go in the other direction, too. Now that millions of EVs are on the road, the multitude of kilowatt-hours stored in EV batteries can be a grid asset. That goes for vehicle-to-grid integration, where EVs can discharge energy to help balance the grid when they’re not driving. But it’s an especially compelling proposition when those batteries get older and are no longer optimal for powering vehicles. Rivian is working with partners such as Redwood Materials to recycle old EV batteries and to repurpose some as grid storage. The same is true at Waymo, whose fleet of autonomous, only-electric rideshare vehicles have racked up hundreds of thousands of miles in some cases.
“Our fleets are sometimes outlasting our batteries where they still work, but they’re just not optimal for the ride-hailing fleet,” Waymo head of environment and sustainability Adam Lenz told Nico Lauricella, Heatmap’s CEO and editor in chief. “So we’re taking those batteries out, refreshing them, and then there’s still a lot of life left on this battery. We’re working with a partner that’s based out of L.A. County where we provide service and they’re deploying those batteries to support front of the meter grid storage.” (Waymo is also a sponsor of Heatmap House.)
It’s clear that the rideshare economy will be dominated by electric vehicles, and Lenz argued that this fact helps extend the climate benefits of electrification and autonomy to people who don’t want to drive or have been priced out by the upfront costs of an EV. The promise that self-driving cars will ultimately be much safer compared to those driven by fallible humans makes it safer to walk or bike, the most sustainable transportation methods. Waymo recently introduced a partnership with Visa to give San Francisco Bay Area riders a $2.85 Waymo account credit (the price of a bus ride in S.F.) when they combine a rideshare trip with a train or bus linkup to create a mulit-modal journey — a roundabout way to create “free” buses.
Across the country, EV charging could help give New York City not only cleaner skies but also improved grid management. The city’s Green Ride Initiative is meant to have New York’s taxi and rideshare trips be majority-electric by 2030, yet NYC has been a charging desert compared to other dense cities like London. Tiya Gordon, co-founder and COO of charging company it’s electric, came to Heatmap House to discuss her company’s recent win of a contract to install 700 new street chargers in New York, which has only 88 today.
It’s not just how many chargers are going in, she said, but where — the majority will go into neighborhoods in Brooklyn and Queens where rideshare drivers live and park their cars overnight. Albert Gore, executive director of the Zero Emission Transportation Association, added: “It makes a lot of sense also when you think about the impact to the grid. If you are directing a lot of that charging at night, particularly for these high mileage use cases, that actually puts downward pressure on electricity rates. EVs are a very, very flexible load.”