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“This is Sky Valley Fire. Evacuation alert for Bolt Creek Fire. GO! No time for delay. Load up your family and pets and LEAVE NOW.”
Imagine getting an alert like this on your phone. Your heart immediately starts pounding; your hands shake. Is it real? Could this actually be happening? All the while, as your head spins, you’re losing precious minutes of time.
Luckily for many of the people who received this actual message last year in the Seattle suburbs, the “go now” alert was a mistake. But if you live in an area with anything greater than a “low” risk of wildfire, you should have a plan in place for what to do if that alert does come. It’s far better to “overreact” and leave immediately than to risk your life — and the lives of first responders.
The good news is, wildfire evacuation plans can begin long before your phone ever buzzes with that dreaded alert. Preparing for fire season ahead of time takes, cumulatively, as little as 90 minutes — but when a fire is encroaching, the math becomes far more urgent.
Importantly: Do not wait for an evacuation notice if you feel like a fire is approaching or like you could be in danger. Trust your gut and leave immediately. Though agencies do their best to protect people with advanced notices, fire is fast and unpredictable. In fact, many survivors of the deadly fire in Lahaina, Hawaii, say they did not receive evacuation orders before the flames had closed in on them.
Here’s what to do if there’s a fire in your area:
If you are experiencing smoke from a wildfire at your home, you should be paying attention to its development — the hazards of wildfires, after all, start with the smoke. If the fire is within 20 miles of you, you should definitely start paying attention; and if it is within 10 miles of you, it’s a threat. This threat increases if you are downwind or uphill.
Do not underestimate how fast a fire can move: 6 miles per hour in forests and up to 14 miles per hour in grasslands, depending on conditions. Embers, which can ignite homes, can also travel several miles, and wind direction can also quickly shift. If a nearby wildfire is approaching the 10-mile range of your home but you haven’t received a voluntary evacuation notice or don’t feel directly endangered yet, still review this evacuation checklist from the U.S. Forest Service. If you do receive a pre-evacuation alert or notice of some kind or want to take further steps to prepare, also:
Make sure you are signed up for emergency alerts or have another way of receiving updates, such as an agency website or Twitter account or a radio tuned into the correct station. Turn the sound on and up on your phone so you’ll hear the alarm or it will wake you up if you’re asleep.
Keep your car charged or filled to half a tank of gas or more. Scope out potential evacuation routes ahead of time, planning alternative routes in case roads are blocked or closed. Authorities say you should memorize at least two ways out of your neighborhood and avoid sketchy shortcuts that might be dangerous or blocked. Otherwise, take the quickest route to the main road, highway, or freeway out of the area.
Make a plan of where you’ll go if you need to leave your home for an extended period of time. A family or friend’s house? A hotel? A community emergency shelter? Open Red Cross shelters can be found here.
Open your garage door so you’re easily able to leave if you lose power.
Round up pets and secure them so they’re easy to put into carriers and transport to the car if you need to evacuate, and so you don’t waste precious time trying to chase them down when they’re scared. As the U.S. Forest Service notes, “this is especially important with cats.”
Prepare livestock and horses, if applicable, by reviewing this checklist.
Load up your car so you are prepared to leave on short notice. Remember to pack your go-bag (here is a version of the list in Spanish); suitcases of clothes and medicine (enough for at least a few days); pet supplies like collars, food, and water bowls; important files and back-up disks; insurance and bank papers; special or sentimental items; valuable jewelry or heirlooms (or store them in a fireproof safe); photo albums; and household items like keys and purses.
Too much to remember? Washington State suggests running through the Five P’s of evacuation: People, Prescriptions, Papers, Personal Needs, and Priceless Items.
Strongly consider leaving immediately. Roads can get congested after a mandatory evacuation order is issued, potentially creating dangerous situations where you’re trapped in your car near the fire. It will also get more difficult to see as the fire gets closer and the smoke gets thicker (always evacuate with your headlights turned on). Evacuating early also gives you time to calmly prepare a plan and collect essential items. If you’re on the fence, keep in mind it’s always better to leave too early than too late.
If you have time to prepare your house ahead of your evacuation, here is a checklist from the Western Fire Chiefs Association that you can use to get ready. Keep in mind that “the accepted sequence for safe evacuation is people first, then pets, livestock, and finally property,” Idaho Firewise writes. Major steps include:
Close all windows and interior doors to prevent the spread of fire indoors if the flames reach your home, and remove any curtains from windows. Close shutters and blinds. Leave your exterior doors unlocked so firefighters can get inside if need be.
Turn on all the main lights in your house as well as outdoor lights. This will allow firefighters to be able to see and navigate around your home in smoky conditions.
Push flammable furniture away from walls and windows and to the center of the room.
Shut off gas and turn off pilot lights. Don’t forget about pilot lights in gas fireplaces.
Attach hoses to outdoor water sources — firefighters will potentially use these to defend your home. The Western Fire Chiefs Association also recommends turning the nozzle to “spray” and propping a non-flammable ladder against your house to provide roof access. Fill buckets or garbage cans with water and leave them around your property if you’re able. However, you should not leave any water running, KQED notes, since that decreases the flow available to firefighters.
Prepare yourself for evacuation. California’s ReadyForWildfire.org recommends wearing “long pants, [a] long sleeve shirt, heavy shoes/boots, [a] cap, [a] dry bandanna for face cover [or a leftover COVID mask], goggles, or glasses,” and notes that “100% cotton is preferable.”
Finally, check on, text, or call neighbors and make sure they’re aware of the fire and also prepared to leave. Let them know you are choosing to evacuate. Also email, text, or call family who live outside the area and might be worried about you to let them know of your plans.
There is only one thing to do: Leave as fast as you can.
If you get an evacuation notice (or hear the high-low siren that also signals an evacuation order in California), do not waste time checking to see if the alert is real, gathering up items around your house, or making efforts to prepare your home. Your only focus at this point should be on getting to safety as quickly as you can.
Grab your go-bag and pets and get in your car; drive with the headlights on and follow the directions of any fire or emergency officials. If you need to evacuate on foot, quickly change into long pants, a long shirt, a cap, and heavy boots, and take essential items in a backpack or easily carried duffel bag. Know what to do if you get trapped near a wildfire. Be careful of downed powerlines or other hazards. And stay out of the area until officials say it is safe to return.
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Timber companies think of them as pests, but new research indicates that stands of the slender tree can act as barriers against raging flames.
Colorado’s Aspen Acres Fire is named after a quiet RV campground located high in the San Isabel Mountains, about a five-hour drive due southeast of the state’s better-known Aspen. Both places, however, are named after the iconic deciduous tree known for its golden leaves in the fall. While the start of monsoon season may yet prevent the Aspen Acres Fire — the seventh-largest in Colorado’s history — from joining Utah’s Babylon Fire as the second 100,000-acre “megafire” of the season, the conflagration has been aided in its rampage not by aspens, but rather by dead, downed, and blighted ponderosa pines, spruce, and Douglas firs. The wildfire has now burned over 98,000 acres and nearly 300 homes, and is only 36% contained due to steep terrain that has hampered firefighting efforts, along with extreme drought conditions and beetle infestations that have greatly degraded the forest health of the region.
But what about its aspens? Though the extent of the damage at the campground remains unknown, according to a recent study of Populus tremuloides, Colorado’s iconic golden trees could be one of the keys to more wildfire-resistant forests in the future.
Flavie Pelletier, a recent PhD graduate of McGill University’s Natural Resource Sciences program, told me she first became interested in aspens while working as a tree planter in British Columbia. “The historical assumption on aspen is that stands are very good at stopping fire progression. But the paradox is that if you take an aspen by itself, it’s going to burn at high severity,” Pelletier, who published her findings in Forest Ecology and Management, told me.
By creating near-real-time maps of fires using satellites and comparing them against the Canadian Forest Service’s newly available maps of dominant tree species in the boreal, Pelletier and her colleagues discovered that aspen were almost two and a half times more common at the perimeter of a burned area than inside it. The finding suggests that despite the flammability of a single aspen with its thin bark, stands of aspen act as a kind of barrier when wildfire ran up against them, likely because they lack the flammable resins of conifers and their high foliage helps force running crown fires back toward the ground. Pine and spruce, by contrast, showed a near-zero or even negative effect.
When aspen stands did burn, Pelletier found they did so more slowly: A tree cover of 50% aspen burned at about 224 hectares per day, compared to 717 hectares per day in areas where aspen made up less than 10% of the cover. That’s the equivalent of about 1,000 FIFA-regulation soccer pitches per day in places where aspen are sparser — like Aspen Acres.
Even more surprising, though, was that the pattern held true in the early season, when the trees are still twiggy and have yet to grow their moisture-filled leaves, and despite the severity of fire weather. “Aspen still showed resilience even when the fire weather was very intense, [like in 2023, when] we had all the fires,” Pelletier said.
But she was also the first to admit that seasons are getting more extreme, and that there’s no guarantee the pattern will hold for the next 10 or 20 years.
Pelletier was reluctant to make a policy recommendation based on her research, noting that she’s not a forest manager. But in Alberta and British Columbia, timber companies spray hundreds of thousands of acres of timber with glyphosate, an herbicide, to kill off aspens because the trees outcompete the more commercially valuable conifers. Her findings are “a big argument to stop the spreading of herbicides because you’re increasing the risk of fire in your forest by removing aspen,” Pelletier said.
Despite her hesitation, Pelletier is explicit in her paper about one thing: that aspens “should be encouraged — specifically around key landscape positions, such as population centers” — given that they are a proven means of hardening the wildland-urban interface against wildfires. It might be too late for the idyllically named Aspen Acres, of course; any of the aspens that once drew tourists to the area are likely now ash.
But this not be Colorado’s last fire, either.
Current conditions: More than two dozen locations across the Mountain West and Midwest broke temperature records Sunday as the nation’s heat wave roasted the Central United States • At least 12 people died fleeing a sweeping wildfire in Spain as hundreds of firefighters battled the flames • In Colorado, the ongoing Aspen Acres Fire has destroyed 780 structures.
During President Donald Trump’s first term, his administration’s big fight over public lands centered on the last two national monuments approved by Barack Obama on the way out of office. In 2017, Trump signed executive orders slashing the size of Bears Ears National Monument by 85% and nearby Grand Staircase-Escalante, both located in Utah, by half. Legal challenges were still pending when President Joe Biden restored the reserves to their initial size in 2021. But ABC4 in Utah reported last week that Trump planned to announce a new executive order to shrink the boundaries of the monuments yet again, likely this afternoon. “The Antiquities Act was a one-way statute when Teddy Roosevelt signed it into law. It was a one-way statute when President Trump tried to ignore it in 2017. It’s still a one-way statute today,” Aaron Weiss, the executive director of the Center for Western Priorities, said in a statement. “Just last month, Congress had a chance to weaken the management plan for Grand Staircase-Escalante and declined.”
In April, the Senate approved a House resolution using the Congressional Review Act to clear the way for a mining operation near Minnesota’s Boundary Waters, in what my colleague Jeva Lange called a declaration of “open season on public lands.”
Over the past 12 months ending in July, 56 fusion companies raised a total of $4.5 billion, a 69% jump over 2025’s total. That’s according to the latest data from the Fusion Industry Association’s annual report. Total funding since 2021 now stands at $14.2 billion, a sevenfold increase. Twice as many companies are now competing as when the report was first published six years ago. This year’s figures include major financing rounds from Commonwealth Fusion Systems, which raised $863 million last August; Inertia Enterprises, which brought in $450 million in February; Helion Energy, which raked in $456 million last month; and the European champion Proxima Energy, which netted $518 million this month.

Back in January, I told you when the price of copper hit a record high. We kept track, too, of Chilean miners’ plans to ramp up production last month. But Chile’s output of copper fell sharply in May, according to a Mining.com analysis of data from Codelco, the country’s national miner. Production from major miners such as BHP dropped over 18% year-on-year to 106,300 metric tons. The fall comes as key mines in the South American nation face declining ore quality.
The move comes right as one of China’s biggest solar manufacturers switched from using silver to copper in its panels in response to what Bloomberg described as the surging prices of the precious metal.
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The world’s first commercial satellite powered by nuclear energy has launched into space after escaping the Earth’s atmosphere on a SpaceX Transporter-17 vessel. Miami-based City Labs, the company behind the launch, specializes in designing, developing, and manufacturing micro power technology based on the radioisotope tritium. The technology is meant to provide long-lasting, maintenance-free power for medical, industrial and space applications. “This is a historic step for commercial nuclear power in space,” City Labs CEO Peter Cabauy told World Nuclear News. The system “demonstrates that safe, compact, and regulatory-approved nuclear power systems are ready for routine commercial deployment.” The technology “enables persistent, always-on” operations “that are not constrained by sunlight or battery life.”
New York is behind on its development of clean energy. Its offshore wind buildout has stagnated. The state has limited space and sunlight for large-scale solar. And while Albany is positioning itself as the state leader on nuclear power with plans to construct more reactors upstate, those efforts are long term, and only just began. But one source of green power is expanding faster than expected: rooftop solar. New Yorkers installed 8 gigawatts of distributed solar capacity, putting the state ahead of schedule moving toward its legally-binding goal of 10 gigawatts by 2030. “New York continues to set the bar high as we mark another milestone for solar within our communities across the state,” New York Governor Kathy Hochul, a Democrat, said in a statement. “This is low-cost, reliable clean energy that is delivering cost savings for families and businesses while expanding the availability of renewable energy which benefits our environment, our economy and contributes to New York’s diverse energy resource mix.” That’s optimistic. But as Heatmap’s contributor Jesse Jenkins explained on our Shift Key podcast in 2023, there are limits to how big an impact rooftop solar can have on emissions.
China, as I told you last week, has been investing heavily in green hydrogen. The statement in Beijing’s latest Five-Year Plan confirms that green hydrogen, ammonia, and methanol “will play a significant role in decarbonizing China,” Hydrogen Insight reported.
Building a data center is also quite carbon-intensive.
When I helped start Heatmap News three years ago, I didn’t think I would be writing this much about big tech companies.
I knew that, sure, they were crucial to America’s ability to develop and scale some next-generation emissions-reducing technologies. (By then, Microsoft had already started its huge carbon removal purchasing program.) And, yes, I knew they bought a lot of renewables. But I still understood their clean energy programs chiefly as an employee perk — a way for some of the economy’s richest firms to show their largely urban, college-educated, and liberal employees that they cared.
Perhaps that was true once. It’s not true anymore. Over the past several years, the tech companies have become major electricity consumers and producers in their own right. Artificial intelligence has turned their electricity procurement and development businesses into core operational competencies. (Meta and Microsoft have even considered entering the electricity trading business.) Some of the thorniest questions in climate policy were first encountered by these tech companies.
More importantly, their hunger for electricity has transformed them into quasi-industrial companies — and given them enough heft in the market to sometimes counterbalance (and sometimes collaborate with) the utilities and fossil fuel firms that previously steered the sector. As such, they’re now crucial parts of the U.S. decarbonization story.
Three companies in particular dominate the artificial intelligence cloud business: Google, Amazon, and Microsoft.
The country’s best-known frontier labs, such as OpenAI and Anthropic, rely on these companies to provide their compute power; Amazon Web Services is the backbone of virtually the entire online software industry. Amazon, Google, and Microsoft account for more than half of the country’s data center power capacity, according to the investment firm Jeffries.
So these companies’ emissions are, in a sense, not only their own; they also give us a view into the AI industry’s carbon footprint more broadly.
Over the past two weeks, all three of these cloud providers released their energy and emissions data for the past year, and we’ve looked at the top line findings from these reports in past editions. Today I want to briefly dive into what they could mean together.
Let’s handle the part you already know: Everyone’s emissions are up.
Microsoft’s emissions grew by 25% last year, their largest year-over-year leap since the pandemic. Amazon’s emissions leapt by 16%, its largest one-year increase ever. Google’s emissions increased by 18%, rising above their pre-pandemic level.
This surge will make the companies’ climate goals increasingly difficult to meet — and some of them are coming up fast. Microsoft has pledged to become ‘carbon negative’ by 2030, meaning it must remove more climate pollution from the atmosphere than it emits in that year. Google has pledged to achieve net zero by 2030, a goal that requires — by its own estimate — cutting its emissions in half by that year, as compared to their 2019 level. Amazon, meanwhile, has pledged to achieve net-zero in its operations by 2040.
All three firms’ greenhouse gas emissions are up because of the AI data center boom. Microsoft consumes nearly four times as much electricity as it did before the pandemic; Google’s electricity use has more than doubled.
These companies’ energy use has swelled, too, but at least as of last year, nearly all of their energy demand still took the form of electricity. When we think about “electrification” in the national context, perhaps we should think at least as much about these AI megalodons as we do about heat pump or battery manufacturers.
Amazon, to its shame, does not publish recent electricity usage data, so it doesn’t appear on either of these charts.
But outsiders have estimated its power consumption based on the numbers it does publish. Hendrik Rood, an IT researcher and consultant in the Netherlands, calculates that Amazon’s data center business used 78,000 gigawatt-hours in 2025. That would mean it consumes nearly as much electricity as Microsoft and Google combined.
As I cautioned yesterday, some of these figures are already outdated. Although all three companies just released their 2025 sustainability data, Microsoft brackets its report to the fiscal year, which ended on June 30, 2025. Google and Amazon’s data covers the calendar year.
In what might be a quirk inherent to the genre, all three sustainability reports have a somewhat defensive tone (or at least a writing style that tries to anticipate quibbles). These companies know that their sustainability pledges, embraced in the heady flush of 2020 and 2021, have become much more difficult to fulfill in the AI era. And they want you to know that all of their emissions could be worse — if not for their corporate policies, pollution might be much higher.
I can’t say I find these counterfactuals entirely believable. We don’t know what Google or Microsoft or Amazon would do if, say, computing were more energy intensive or a certain process more environmentally damaging. And Jevon’s paradox suggests that every gain in efficiency — especially for a service as in-demand as AI — will make it cheaper to use AI, therefore raising its energy demand.
But I do think it’s worth sharing these claims to get some perspective. Google, for its part, says that its corporate emissions would be five times higher than they are if not for its total slate of policies:

Microsoft takes a more clinical approach. It selects four of its corporate policies: “carbon-free electricity, sustainable fuels, XBOX console efficiency,” as well as efforts to decarbonize its Surface tablet production. If not for these interventions, it says, it would have emitted 34 million tons of greenhouse gas into the atmosphere last year, not the 21 million tons that it did produce.
For all the focus on the difficulty of powering data centers (including by Heatmap), electricity does not drive most of these companies’ emissions — or it didn’t in the first half of last year, at least. The majority of Microsoft, Google, and Amazon’s greenhouse gas emissions came from what are dubbed “scope 3” emissions, a somewhat nebulous category that includes buildings, employee travel, and the full carbon footprint of their supply chain. This category reflects the AI boom in its own way.
(Skip this if you’re a sustainability nerd: In the classic schema used for corporate emissions accounting, “scope 1” emissions are direct fossil fuel pollution from an asset that the company owns or controls, “scope 2” emissions are pollution associated with the electricity, steam, or chilled water purchased by the company, and “scope 3” emissions are everything else — pollution from the company’s upstream supply chain and its downstream product use. I find this scheme makes somewhat more sense for businesses like airlines and automakers than it does for technology conglomerates. But that’s a different newsletter.)
It makes sense, then, that Amazon should have huge scope 3 emissions. The scope 3 subcategory called “Purchased Goods and Services” drives the largest share of its emissions; these include pollution from goods and services that Amazon buys for its employees to use, as well as all the embodied carbon in its line of Amazon Basics products.
But the biggest driver of scope 3 emissions — and thus for emissions overall — for Microsoft and Google came from “capital goods,” a category that covers new construction, physical assets and other fixed infrastructure used to produce products and services. More than 40% of Microsoft’s total emissions came from capital goods, and they made up more than 9 million metric tons of the company’s greenhouse gases. Google doesn’t fully aggregate out its “capital goods” category, combining it with the “use of sold products” subcategory, but it was responsible for almost 9 million tons as well.
These capital goods include the new data centers themselves: all the cement, steel, server racks, and silicon that actually make up the physical infrastructure supporting the AI boom. Here at Heatmap, we often focus on the electricity sector because it’s where so much change. But it’s good to remember that construction remains enormously carbon-intensive, and the literal buildings that house AI are, in many cases, still driving a disproportionate amount of emissions.