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A conversation with Stephen Pyne, the world’s most prominent wildfire historian

The world's most prominent wildfire historian found his way into his life's work by accident. A few days after he graduated from high school, Stephen Pyne had been brought on as a laborer on the South Rim of the Grand Canyon and was signing his hiring papers when he was asked if he’d be interested in joining a forest fire crew on the North Rim instead.
“I said sure,” Pyne told me. “And it was transformative. Everything I’ve done since then dates from that time on the North Rim.”
Pyne spent fifteen seasons on the North Rim, including twelve as a crew boss, and went on to study fire for a living. He became a fire historian, practically the first of his kind, joined the faculty at Arizona State University, and wrote dozens of books about the history of fire around the world. He retired from teaching in 2018, but continues to work on books — he’s wrapping up one about Mexico at the moment.
I spoke with Pyne about the history of wildfires in the United States, and what the future could look like. Our interview has been edited for length and clarity.
How have we historically thought about fire in the United States?
Well, it depends what time in history you want to go back to. The attitudes we have now are pretty recent, probably less than 100 years. The native peoples used fire widely, for all kinds of things. Heating, lighting, entertainment, agriculture, hunting, foraging, and self-protection. It was all over the place.
Europeans also had fire in their background, but always embedded within an agricultural context of pastoralism or farming. Nobody was particularly putting fires out unless it immediately threatened some asset of theirs, like their house or town. It was just sort of spring clean, part of maintenance of the landscape. So people were always around fire, it was just a constant companion. And then that changes when we began going to industrial combustion, powered by fossil fuels. Suddenly, we don't have fire around us anymore.
Where did it go?
Well, it went into machines. The burning is done off-site and we get the fire through electricity. Processed fossil biomass gave us a lot of the petrochemicals we use for agriculture, so we don't burn the fields for fertilizing and fumigating. We found all these substitutes and then we use machines to deliver those things. So it's taken fire out of the built environment.
When did the American policy of fire suppression really come into being? Was there a turning point?
A couple of things happened. Part of it is we have a long run almost 50 years after the Civil War of very large and disastrous fires. They were associated with clearing settlement, widespread logging, and a lot of it was catalyzed by railroads, which were also a source of these large, disastrous fires that were probably an order of magnitude larger than what we've seen in recent years. Hundreds of people were killed.
And then in the summer of 1910, a series of large fires sort of amassed into what became known as the Big Blowup. This was about three and a quarter million acres burned in the Northern Rockies, killing 78 firefighters the Forest Service had hired in six different incidents all at the same time, during the afternoon and evening of August 20. Traumatized the US Forest Service, which at the time was five years old.
Its leaders determined they were never going to allow that to happen again, and the two guys who were in charge of the firefighting in the Northern Rockies became chief foresters during the 1920s and 1930s. So it was just one generation of leaders, mostly younger men, who were traumatized, and the easiest way to sell the message of what they were doing was to eliminate all fires. The urban elites understood that message, because that's how urban fire services work.
So we spent about 50 years trying to take all fires out of the landscape. And we've spent the last 50 years trying to put good fire back in.
How’s that been working?
It turns out fire is one of these things that’s easy to remove and hard to reinstate. It’s like a threatened species — if you want to reintroduce a species to a landscape, you often find that a lot of conditions have changed. That’s tough to work with.
What are the conditions that have changed that made reintroducing fires so hard?
Well, a lot of it is just the forest changed. And this was a result of overgrazing. selective logging, or outright clear cutting, which allowed stuff to grow back in ways that are outside the norm. Sheep and cattle have stripped away the grasses that made light [more manageable] fires possible, and other stuff grew up in their place. Now you've paved the landscape with dense layers of pine needles and shrubs, and they don’t burn the same way, so you've created a fire trap. All of this actually started with westward expansion, before the Forest Service entered the scene.
And so that 50 year period of suppression must’ve made it worse.
Yeah, that was really disastrous. By the ‘60s, we see pushback. We’d seen the consequences. And I'll point out that this is well before global climate change is on anybody’s agenda. These landscapes were messed up ecologically. Trees and other species weren’t regenerating.
So what starts happening in the ‘60s?
We saw civil society begin to create an alternative to state-sponsored fire suppression. There was a ranch north of Tallahassee that began hosting fire ecology conferences in 1962, they really introduced the term fire ecology. That same year, the Nature Conservancy conducted its first burn at a prairie because they couldn’t maintain the prairie without burning.
It was a real David versus Goliath story. Forestry was too dyed-in-the-wool hostile towards fire. They had sort of made their public identity as firefighters. But all kinds of things started coming together and there was the sentiment that fire should be restored just like wolves and grizzlies.
You mentioned burning had historically been done by the indigenous communities. How involved were those communities in these discussions? Were they involved at all?
Almost none. There were some people who was reintroducing fire to indigenous reservations, but they were foresters with the Bureau of Indian Affairs. But it’s only much more recently that [Native American communities] have sort of taken on cultural burning as a way of restoring their identities and their traditions and maybe even claiming back some of their lands.
We often say that colonialism suppressed indigenous knowledge. Well, that’s true. But something that gets lost, I think, all the time, is that there was a quarrel between the elites and traditional knowledge. Europe’s elites treated Europe’s peasants with disdain as well. Many of the white settlers who weren’t elites used fire as well, but the elites didn’t like that.
Obviously in the last couple of weeks Hawaii has been on everyone's mind. What’s the history of fire in Hawaii?
Before it was colonized, Hawaii was fairly immune to fire. The forests don’t seem to have been particularly responsive to it. You have lightning caused fires, you have volcanoes that set fires but then the lava was the bigger problem there.
Fire in Hawaii starts with human contact, when they begin clearing the forest and introducing exotics. This started with Polynesians before Europeans got into the act. There was a lot of extermination particularly of flightless birds and they introduced pigs and rats and other things. But then it really began accelerating with European contact, when they converted large areas to plantations for sugar and pineapples or grass pastures to raise cows, and so forth. So you have larger scale land clearing that goes on.
But Hawaii was not built to burn in the way California is. We created more combustible landscapes. Tropical grasses grow very well there and burn very well, and once they burn they create conditions that are more favorable to themselves. So it’s a positive feedback system.
We’ve seen a lot of coverage about how climate change is going to intensify wildfires. What do you, as a person who studies wildfires from around the world, think needs to happen going forward?
I mean, these really nasty megafires we've seen recently and that are doing a lot of damage to communities are really a pathology of the developed world. You don’t you don’t see these in the developing world. They have lots of burning, but they don’t have these massive fires.
I think we need to do three things, and we need to do them at the same time. The first is to protect our communities. It’s totally absurd that we have so many fires started by power lines. There’s no reason for towns to burn, and we know how to keep them from burning. So hardening our cities is the first step. The second is we need to recover the countryside. Not just wild lands, but the countryside. We have to put it into a shape that makes fire control easier and will probably also enhance the biology of the site. There are a lot of controversies around that, and there’s but we have got to have ways of negotiating all those values and perceptions. But that’s something that can be done.
The third thing we need to do is tame climate change. We can do a lot of mitigation but at some point unless the accelerating climate upheaval isn’t stopped and even reversed, it will override all the other stuff we do.
Do you think of fire as something to fear?
I think there’s bad fire. Bad fire kills people, it destroys towns, it can trash ecosystems. Fire can do a lot of damage, but it can also be absolutely essential. So it’s not either good or bad.
We have a species monopoly over fire. We made a mutual assistance pact with it a long time ago. You have to tend it, you have to feed it, you have to train it, you have to clean up after it. You have to integrate it into social activities. It’s not just a physical tool like a hammer or an axe that can be picked up and put down. It’s something we domesticated in a way. And we’ve lost control over what’s been a companion that we’ve had for all our existence as a species.
We are fire creatures. You know, we use fire in a way that no other creature does. We’ve abrogated that role. We’ve abused it. But it’s only in the last century or so that we have lost the capacity to manage fire. So this is just us reclaiming our heritage and taking responsibility for the power that our relationship with fire gave us. It’s not beyond our ability to deal with it.
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The U.S. public’s support for AI data centers has continued to collapse since the spring, a new Heatmap Pro poll shows.
The American public has soured even further on local data center development since the spring, new polling shows.
Three-quarters of Americans now say that they would oppose a new data center being built near where they live, according to a new Heatmap Pro poll conducted by Embold Research, and more than six in 10 Americans say they would strongly oppose such a proposal.
That’s by far the most negative response since Heatmap Pro started polling Americans about their receptivity to data centers roughly a year ago.
If you can think of a cohort of Americans, there’s a good chance they wouldn’t welcome a data center in their area. The shift against the facilities is represented across age, gender, income, partisan ID, and the rural-urban divide. Data centers are 43 points underwater with Republicans, 65 points underwater with independents, and 75 points underwater with Democrats.
Notably, local data centers are 63 points underwater with rural voters, a group that has skewed more Republican over the past decade. Urban and suburban voters are only a few points more supportive of the facilities.
What’s most remarkable is the pace of change: We’ve polled this same question four times in the past 12 months and haven’t changed its wording once — yet Americans have swung a remarkable 33 points against data centers in the intervening time. It’s a faster and deeper shift in American public opinion than I would have once thought possible on any issue.
We first asked the question last August. Back then, Americans were about evenly split on whether they would support or oppose a data center being built near their home, with roughly 43% in support and 42% opposed.
Attitudes had changed by February of this year, when we asked the question a second time. That time, a bare majority — 51% of Americans — said they would oppose a data center. Forty-eight percent of respondents said they would support it or weren’t sure.
The shock came in May, though, when seven in 10 Americans were opposed and 55% were “strongly” opposed. Yet since then, Americans have moved even further against the facilities. Now, just 4% of Americans say they would “strongly support” a data center proposed in their area. That figure stood at 13% last August.
The backlash has broken into the mainstream: Earlier this week, the podcaster and retired Philadelphia Eagles great Jason Kelce starred in an ad that advised Americans to mail their urine to AI data centers, which he said were wasting water. Local and national leaders have begun to recognize the scale of the backlash, too. In the Wisconsin governor’s race, candidates from both parties have hastened to distance themselves from data centers. New York Governor Kathy Hochul declared a one-year moratorium on the facilities last month, and even Texas Governor Greg Abbot has frozen some of the state’s data centers until they complete a mandatory audit. More than 530 counties and municipalities have restricted or banned construction of the facilities nationwide, according to Heatmap Pro data.
“There’s literally not a conversation that I have, not a stop that I make, where data centers and AI don’t come up,” Abdul El-Sayed, the Democratic Michigan Senate nominee, said earlier this summer. Look at the polling and you can see why.
The Heatmap Pro poll of 2,045 American registered voters was conducted by Embold Research via text-to-web responses from August 8 to 13, 2026. The survey included interviews with Americans in all 50 states and Washington, D.C. The margin of sampling error is plus or minus 2.3 percentage points.
Agricultural equipment largely runs on diesel, and with the harvest season coming up, that spells bad news for farmers.
Gas prices are climbing again.
As the United States and Iran confusingly engage following the end of a 60-day “memorandum of understanding” between the two warring countries, the fuel market has begun to readjust yet again, continuing the volatility that has confounded analysts since mid-February. While the gasoline most drivers buy has seen its price increase — the national average gas price now sits at $4.09 a gallon, according to AAA, compared to $4 a month ago and $3.13 a year ago — the most dramatic increase has been in diesel. The price of that fuel — a crucial input to the agricultural economy, as well as an important heat source in certain parts of the U.S. — now sits at $5.50 a gallon, up around 14 cents on the week and close to its peak price for the year in June. It’s also dramatically higher than the $3.70 a gallon it was selling at a year ago.
“Diesel is probably the most important product when it comes down to the global economy in particular,” Tom Kloza, chief energy advisor for Gulf Oil, told me.
While there’s probably never a good time for fuel prices to spike, the increase in diesel prices right now will likely translate to increased costs for farmers as they rev up their equipment for the harvest season. If the price stays high, New Englanders who depend on fuel oil for heat will face increased costs.
“In the U.S., we’re looking at just stunning, stunning numbers with the harvest season coming up and the heating season maybe 60 days from now,” Kloza told me.
The continued disruption could mean record setting costs.
“We’re looking — without question — at the most expensive harvest season on record.”
The federal government’s response to these price spikes, to the extent it has one almost six months after the United States and Israel attacked Iran, has been to talk up oil exports that avoid the Strait of Hormuz and to encourage increased production and refining. Secretary of Energy Chris Wright told reporters on Monday that he had met with refiners to figure out what the government could do to boost output, but didn’t announce any specific next steps.
Congressional Democrats have seized on the high prices — and specifically the threat to farm country — to criticize the Trump administration.
“With global fuel supplies now severely disrupted, [farmers’] situation has been made even worse. And when farmers are forced to pay more for diesel, the prices at the grocery store go up for everyone,” Emmanuel Cleaver, a Democratic congressional representative from Missouri wrote on X.
The Farm Bureau, the agriculture industry’s biggest lobbying group, has warned for months of the effect of high input prices on fuel and fertilizers derived from hydrocarbons, writing in July, “Fertilizer and fuel costs were already elevated heading into 2026, and the conflict with Iran has added further pressure to those markets.”
The high price of diesel and the attendant strain on farmers and truckers has translated to high margins for refineries. The margin between diesel and crude prices has grown to over $100 a barrel, an all-time high, according to data collected by Bloomberg. Before this year, the previous high was under $90.
Even going into this new stage of the U.S.-Iran war, oil companies were already running their refining operations flat out, to record or near-record profits in the most recent quarter. Shell even reported that it was able to operate its refineries at beyond 100% of their capacity, something its chief executive Wael Sawan attributed to the Wall Street Journal to removing “bottlenecks.”
Overall refinery utilization in the U.S. has hit 97%, according to Patrick De Haan of GasBuddy, marking three consecutive months of utilization over 95%, a record.
It’s not just the widely documented strangulation of the Strait of Hormuz that’s driving up diesel prices. The Russian government has instituted a ban on diesel fuel exports through the beginning of next year due to persistent Ukrainian drone attacks on Russian refineries.
“My routine now starts with checking the overnight wires to see if there were any drone strikes on refineries. That’s what this business has come down to,” Kloza told me (drones hit a Russian refinery in Bashkortostan on Wednesday).
The United States faces this new stage of the Iran energy crisis having already boosted both its own exports of oil and authorized the release of over 170 million barrels of crude oil from the Strategic Petroleum Reserve.
Stockpiles of diesel and fuel oil in the United States currently stand at around 106 million barrels. Those inventories have fallen by 1.5 million barrels in the past week and “are about 13% below the five-year average for this time of year,” according to the EIA. Meanwhile, the U.S. Strategic Petroleum Reserve is holding just under 300 million barrels of crude oil, after releasing about 115 million barrels since the war began.
SPR releases will likely continue through September, Arnab Datta, the director of policy implementation at the Institute for Progress, told me. The effect those releases have on prices will largely depend on what forces they’re trying to counteract. A full, persistent closure of the Strait of Hormuz would likely overwhelm SPR releases, as could China deciding to rebuild its oil stockpiles.
“You get a Hormuz-level disruption of that size, no single stockpile really is going to be able to overcome that,” Datta said. “It depends on how much is coming out of Hormuz.”
On electrolyte factories, Josh Shapiro's flip, and Canadian clean power
Current conditions: Firefighters are encircling Belgium’s largest fire on record, just the latest blaze in Europe as historic heat waves roast the continent • The Canadian wildfire smoke that billowed into Michigan this summer cost the state nearly $6.7 billion • The string of storms that now includes the habagat, or southwest monsoon, hammering the Philippines has displaced 5.2 million Filipinos so far.
The Trump administration is barreling forward with a plan to open close to 45 million acres of wilderness in national forests to road construction and logging, removing protection The New York Times said has been in place for a quarter century. The U.S. Forest Service’s proposal would rescind a Clinton-era rule enacted in 2001 to bar roadways from routing through certain areas. The repeal is a major victory for Republican states and industry groups that lobbied for years to revoke the protections, and even unsuccessfully sued more than a dozen times to strike down the so-called roadless rule.
The new push comes a day after Customs and Border Protection paused work on a border barrier in Big Bend National Park after a flurry of videos showing bulldozers marring the protected landscape drove what the public lands-focused news site Public Domain called “a furious backlash.”
You know those thin white lines that trail behind airplanes? If you’re among the hordes of internet-poisoned conspiracy theorists, you may be certain these are called chemtrails, deliberately sprayed aerosols containing some secret mind control substance. In reality, these are condensation trails, or “contrails,” clouds of vapor that condense around soot particles from jet engine exhaust. Though they are not spreading any nefarious biochemical agents, contrails do take a climate toll, trapping outgoing infrared radiation like a blanket and adding to the greenhouse gas effect. Now Google is stepping in with a new program called Operation Blue Skies, in which the tech giant will partner with the British government and airlines to deploy its artificial intelligence technology to help create a zone in the North Atlantic free of any contrails. “While they may seem harmless, these warming contrails account for roughly one third of aviation’s total climate impact,” the two program managers in charge of effort, Paul Hodgson and Chaim Langermann, wrote in a blog post. “Our AI-powered forecasts have enabled flight crews and air traffic controllers to make targeted adjustments that avoid contrail-sensitive regions while remaining within normal flight operations. Now, we’re taking the next major step: expanding beyond individual airline trials to coordinated contrail mitigation across an entire flight corridor.”
The technology could, in theory, lay the groundwork for solar radiation management. Some conspiracists, without real evidence, suggest that contrails are, in fact, already a furtive government experiment to modify the atmosphere with aerosols that reflect the sun’s light back into space, a leading concept for how to artificially cool the planet and buy more time to tackle the causes of climate change. Those efforts are inching closer to reality — just read my colleague Robinson Meyer’s reporting on the world’s first major private geoengineering company’s fundraising or my reporting on when the startup revealed its proprietary reflective particle. Technology that could help coordinate flights to spray aerosols in the atmosphere, or can deliberately keep planes out of certain airspace, may prove central to deploying geoengineering at any real scale. Perhaps a public effort to explain contrails and deal with their actual downsides will earn more trust to experiment with things like solar radiation management. I wouldn’t hold my breath.
Solid-state technology could revolutionize batteries by making them charge faster, last longer, and pack more energy into less space. But the electrolytes needed for the ceramic or polymer interior that store and deliver the battery’s charge are not widely produced in the U.S. On Tuesday, the startup Anthro Energy broke ground on a new factory in Louisville, Kentucky, that is designed to produce enough battery materials for more than 300,000 electric vehicles. The facility is scheduled to start production in 2028, and will provide a definitive domestic source of materials that are otherwise largely sold by Chinese companies, David Mackanic, co-founder and CEO of Anthro Energy, told TechCrunch. The plant itself is a testament to the success of the Biden administration’s two landmark laws. It received $24.9 million from the Department of Energy under the 2021 Infrastructure Investment and Jobs Act, and another $18.4 million in investment tax credits under the 2022 Inflation Reduction Act.
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Back in February, I told you about Pennsylvania Governor Josh Shapiro’s middleground approach on data centers. Instead of advocating a full-on moratorium on building the facilities, as progressives Senator Bernie Sanders of Vermont and New York Representative Alexandria Ocasio-Cortez proposed a month later, the centrist Democrat laid out “selective” new conditions for large data centers seeking Harrisburg’s approval, including recycling of cooling water, as the state became a hotbed for projects. Now Shapiro is making an about face. In what The Philadelphia Inquirer called “a major shift from his initial embrace of the increasingly unpopular projects,” the governor signed a sweeping executive order Tuesday requiring local approval for data centers to receive state permits. The move is not a moratorium. But the extent of the backlash — seven in 10 Americans now oppose data centers in their backyards, per Heatmap Pro’s polling — may mean the need for a local green light serves as an effective ban. The order also removes Amazon’s controversial $20 billion data center complex between Luzerne and Bucks counties from the state’s fast-track permitting program, which is now unavailable to any such projects. “I have no other choice than but to take this executive action to protect the good people of Pennsylvania from these predatory developers and from these projects that would negatively impact our communities,” Shapiro said after signing the order.

Canadian Prime Minister Mark Carney announced plans Monday to invest roughly $50.2 billion into upgrading the nation’s hydroelectric fleet and building new wind turbines, part of the Liberal government’s effort to build “a stronger, more independent, and more sustainable country.” Under the pact with provincial governments, Ottawa will upgrade and expand the behemoth hydroelectric Churchill Falls Generating Station, develop another hydroelectric project on Gull Island in Labrador, build onshore wind turbines, and construct new transmission lines. “Canada is extending its unique advantage in clean, reliable, and affordable power. Because when we master energy, we master our destiny,” Carney said in a statement. The investment comes as Canada is refurbishing and expanding its fleet of CANDUs, a natively-designed type of pressurized heavy water reactor that can run on raw uranium, as I previously reported here.
Romania, one of only seven countries with a pressurized heavy water reactor as part of its fleet, is struggling to generate electricity from its nuclear plants as the rivers Europe depends on for cooling water run low amid the latest heat wave. On Monday, the country’s Ministry of Energy brought a giant coal plant back online to meet surging demand as the nuclear stations idle, according to the Romanian news site Economedia.
Octopus Energy is, by its own press release’s pun, “stretching its tentacles beyond the home and onto the open road.” The U.S. subsidiary of the British renewable energy giant is making Octopus Charge, Europe’s largest electric vehicle charging platform, a public network in the U.S. The company’s app will allow drivers to chargers on the go. “Driving electric should be simple, wherever the journey leads,” Nick Chaset, chief executive of Octopus Energy U.S., said in a statement. “Drivers shouldn’t have to juggle multiple apps and accounts just to charge their cars.”