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A conversation with Matt Weiner on the Fix Our Forests Act and why the Senate needs to take action — now.

After the Los Angeles County wildfires in January, it seemed like the federal government was finally poised to do something about the decades of flawed forestry practices and land management policies that have turned the West into a tinderbox. On January 23, before the L.A. fires were even fully extinguished, the House of Representatives passed the Fix Our Forests Act on a bipartisan 279–141 vote, queuing up a bill that proponents say would speed and simplify forest and wildfire management projects that have gotten bogged down in a regulatory morass.
Then … not much happened. Though Republican Senators John Curtis of Utah and Tim Sheehy of Montana teamed up with Democrats John Hickenlooper of Colorado and Alex Padilla of California to write their own version of the Fix Our Forests Act for the Senate, the bill stalled after a summer spent focused on the reconciliation bill. Meanwhile, more wildfires made headlines.
Matt Weiner, the founder and CEO of the nonprofit advocacy group Megafire Action, wants to bring some urgency back. This week, the organization launched a six-figure ad campaign in Washington, D.C., aimed at spurring senators to get back to working on wildfire resilience and forestry reform. Though the bill’s approach is divisive — the House version drew initial pushback from more than 100 environmental organizations, including the Sierra Club, Natural Resources Defense Council, and League of Conservation Voters, for opening up large tracts of federal forest to logging, among other concerns — Weiner told me “there’s no huge substantive holdup in the Senate that is keeping it from getting to 60 votes.”
I caught up with Weiner this week to learn more about where things stand with the Fix Our Forests Act and talk through some of the bill’s more controversial regulatory rollbacks. Our conversation has been edited and condensed for clarity.
Catch our readers up: Why the Fix Our Forests Act, and why now?
We’re looking at a generational opportunity to change the way we do land management. This is the most significant change Congress has considered since the Healthy Forest Restoration Act, and maybe even since the original National Forest Act.
The smoke impacts of wildfires are killing more people than the flames. Wildfires are the most significant driver of PM 2.5 emissions growth in the country right now. The clean air community has done a fantastic job of reducing industrial emissions of PM 2.5, which has had real public health impacts, but those gains are in danger of vanishing because of the growth of wildfire smoke exposure.
Then there’s the climate. If you care about carbon emissions, this is a huge opportunity at a time when a lot of other climate issues seem to be on the backburner. The 2020 fire season in California — a particularly bad year — released enough carbon to undo 20 years of the state’s emissions reduction progress. The 2023 Canadian wildfires, if treated as a country, would have been the third-largest emitter in the world that year. And if you start thinking about Alaska and the Boreal burning in the way the West has been burning, it could potentially be game over for the climate. It’s important that people understand that this is an existential climate issue and that we have an opportunity to make progress in a bipartisan way.
You and I have chatted before — we first spoke about the Fix Our Forests Act almost a year ago, now. What’s happened in the past 12 months with the bill?
The bill passed the House right after the Los Angeles fires. The last time we spoke [in October 2024], the bill had passed the House in the previous Congress with a bipartisan margin. But this time, it got a much bigger bipartisan show of support: 64 Democrats and all the Republicans in the House.
The bill saw some changes and improvements to focus on the immediate needs in Los Angeles County [after the January 2025 fires] — things like improving the ability of a city like Los Angeles to gain access to Community Wildfire Defense Grant funding and improvements to the Wildfire Intelligence Center targeted at making sure it plays a role in helping local governments make decisions on where to place assets before a high risk event.
Then the bill went to the Senate, but instead of moving the House bill through, a group of senators came together to write a bipartisan version with some changes. Senator Curtis from Utah was the lead, along with Senators Padilla, Hickenlooper, and Sheehy. Their version included changes to the litigation section from the House bill, which had raised concerns among a lot of environmental organizations, as well as modifications to the permitting section. That earned the bill the support of more environmental organizations than the version from the House — they have the Nature Conservancy, the Environmental Defense Fund, the Audubon Society, and the National Wildlife Federation on board, as well as a lot of local organizations and wildfire groups like the Alliance for Wildfire Resilience.
But then a lot of the oxygen in the Senate was taken up by the reconciliation package. That put a pause on things through the August recess, and now they’re looking to hopefully mark up the bill during the October work period. We’re very optimistic about being able to get floor time. We think there’s a clear path to 60 votes in the Senate for this bill, and if there’s a good, constructive markup, it could be much more than that. There’s no substantive holdup as much as there is the ever-present fear of stasis and losing momentum. That’s why we launched an ad campaign with an eye toward building the urgency back up.
How did the ad campaign come together?
The idea was that this is a bipartisan issue, so where is the support? We didn’t need to launch a big persuasion campaign; we needed to highlight the absurdity of the fact that, eight months after Los Angeles, we still haven’t had any meaningful action from Congress. There is an opportunity before them that would make a big difference in wildfire policy writ large.
I’m interested in your focus on using “state-of-the-art science” and “new and innovative technologies” to address wildfires and forest health. What have you seen in this space that has made you excited?
The bill is about improving the planning and implementation of wildfire policy — especially mitigation work like treatment projects, but also in the built environment. A big cornerstone of that would be the creation of a new Wildfire Intelligence Center, which would use the most advanced technology to understand what our risk profile is on the ground across landscapes and jurisdictions. Right now, there is no one entity in government responsible for taking a comprehensive look at risk across landscapes, what we’re doing on the ground, and how that buys down risk.
At the same time, one of the things we’re negotiating is making sure that the Forest Service and the Department of Interior are positioned to work with some of the companies doing advanced modeling, detection, and tracking work — as opposed to having the government try to build its own clunky system. We’ve modeled it after successful efforts elsewhere in government, such as the Defense Innovation Unit and other Department of Defense and NASA programs that have been great at harnessing private sector innovation for government use. There’s also a new pilot program in the bill, in Section 303, that would create a pathway for the Forest Service to start identifying and piloting new technologies and give them a path to scale across the agency if they find that it helps them do the job better, faster, and cheaper.
The timber industry has collaborated with the Forest Service on fire suppression since the 1920s. In the decades since, “forest management” has at times been used as a euphemism for industry-friendly practices like tree thinning, which many ecologists say would allow invasive species and brush to flourish, and would actually worsen wildfires. How would cutting the red tape around “vegetation management activities” not be a handout to the timber industry?
We all know that the best tool for mitigation is good fire, prescribed fire, beneficial fire, and — where appropriate — managed fire, as well. Unfortunately, because we’ve taken fire out of these landscapes, forested landscapes in particular are so overgrown that you couldn’t introduce good fire even if you wanted to. So mechanical thinning has to be a part of this.
One of the tensions here is that the timber industry wants merchantable timber. They want the big trees, and in a lot of cases, those are the ones we want to keep in the ground with these projects. What we’re focused on is invasive species, overgrown areas, and dead trees from morbidity events like recent droughts so that we can reintroduce good fire at scale. If we all let it burn, like some have proposed, you’d end up with hundreds of thousands of acres of landscape burning at a time, like we saw in the [2021] Caldor fire, where nothing will grow back in a way we recognize for at least decades — and given climate change, maybe not ever.
It’s important to make sure that we don’t go back to the timber wars [of the 1980s and 1990s between environmentalists and loggers in the Pacific Northwest], but at the same time, we need to recognize that the biggest threat to our forests right now is catastrophic fire, not the timber industry. We want to deal with the threat at hand and make sure the pendulum that swung during the timber wars — for very good reason — against the timber industry comes back a little, but doesn’t swing too far in the wrong direction, either. The Senate bill strikes the right balance there.
A number of major environmental groups initially came out in opposition to the Fix Our Forests Act over numerous concerns, including that it erodes Endangered Species Act protections by exempting the Forest Service and BLM from the requirement to adjust land management policies as new information about how projects could affect threatened species arises. What is the other side of this tradeoff? How would limiting the consultation requirement advance the goal of reducing wildfires?
The biggest challenge right now is that, because of all of the regulatory hurdles, it can take upwards of a thousand days to get a project off the ground anywhere in the country. One great example of that is in the Angeles National Forest. They announced a fuel break maintenance strategy in 2020, but they were not able to get the requisite approvals until the start of December 2024. It took four years — and then the last of the permits that were most relevant to Altadena didn’t get approved until March, two months after the fire. There are very real consequences to this kind of delay, both for the environment and for human health and safety, that need to be taken into account.
If you take a step back and look at the bill, the main tool that it uses is not broad NEPA exemptions or writ-large changes in the law. It utilizes categorical exclusions, a method that has been used for energy projects in other areas and is increasingly sought after to advance targeted projects with public benefits.
One great example is the Tahoe categorical exclusion, on which a significant portion of this bill is based. It was a 10,000-acre CE created in 2016, which allowed for work that protected communities and ecosystems and got good fire on the ground. It’s work that directly saved South Lake Tahoe from the Caldor Fire. But one of the challenges right now is that the current level for CE is 3,000 acres, and when we’re talking about landscapes in forests that are hundreds of thousands of miles big and a fireshed that nationwide is 50 million acres, then 3,000 acres is not enough for it to be worth it for the Forest Service and Park Service and DOI officials to go through the CE process — which takes six months and is very rigorous.
But we also wanted to show restraint here for environmental purposes. We wanted to make sure that this was as targeted as it needed to be, and not overly expansive.
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Citrine Informatics has been applying machine learning to materials discovery for years. Now more advanced models are giving the tech a big boost.
When ChatGPT launched three years ago, it became abundantly clear that the power of generative artificial intelligence had the capacity to extend far beyond clever chatbots. Companies raised huge amounts of funding based on the idea that this new, more powerful AI could solve fundamental problems in science and medicine — design new proteins, discover breakthrough drugs, or invent new battery chemistries.
Citrine Informatics, however, has largely kept its head down. The startup was founded long before the AI boom, back in 2013, with the intention of using simple old machine learning to speed up the development of more advanced, sustainable materials. These days Citrine is doing the same thing, but with neural networks and transformers, the architecture that undergirds the generative AI revolution.
“The technology transition we’re going through right now is pretty massive,” Greg Mulholland, Citrine’s founder and CEO, told me. “But the core underlying goal of the company is still the same: help scientists identify the experiments that will get them to their material outcome as fast as possible.”
Rather than developing its own novel materials, Citrine operates on a software-as-a-service model, selling its platform to companies including Rolls-Royce, EMD Electronics, and chemicals giant LyondellBassell. While a SaaS product may be less glamorous than independently discovering a breakthrough compound that enables something like a room-temperature superconductor or an ultra-high-density battery, Citrine’s approach has already surfaced commercially relevant materials across a variety of sectors, while the boldest promises of generative AI for science remain distant dreams.
“You can think of it as science versus engineering,” Mulholland told me. “A lot of science is being done. Citrine is definitely the best in kind of taking it to the engineering level and coming to a product outcome rather than a scientific discovery.” Citrine has helped to develop everything from bio-based lotion ingredients to replace petrochemical-derived ones, to plastic-free detergents, to more sustainable fire-resistant home insulation, to PFAS-free food packaging, to UV-resistant paints.
On Wednesday, the company unveiled two new platform capabilities that it says will take its approach to the next level. The first is essentially an advanced LLM-powered filing system that organizes and structures unwieldy materials and chemicals datasets from across a company. The second is an AI framework informed by an extensive repository of chemistry, physics, and materials knowledge. It can ingest a company’s existing data, and, even if the overall volume is small, use it to create a list of hundreds of potential new materials optimized for factors such as sustainability, durability, weight, manufacturability, or whatever other outcomes the company is targeting.
The platform is neither purely generative nor purely predictive. Instead, Mulholland explained, companies can choose to use Citrine’s tools “in a more generative mode” if they want to explore broadly and open up the field of possible materials discoveries, or in a more “optimized” mode that stays narrowly focused on the parameters they set. “What we find is you need a healthy blend of the two,” he told me.
The novel compounds the model spits out still need to be synthesized and tested by humans. “What I tell people is, any plane made of materials designed exclusively by Citrine and never tested is not a plane I’m getting on,” Mulholland told me. The goal isn’t to achieve perfection right out of the lab, but rather to optimize the experiments companies end up having to do. “We still need to prove materials in the real world, because the real world will complicate it.”
Indeed it will. For one thing, while AI is capable of churning out millions of hypothetical materials — as a tool developed by Google DeepMind did in 2023 — materials scientists have since shown that many are just variants of known compounds, while others are unstable, unable to be synthesized, or otherwise irrelevant under real world conditions.
Such failures likely stem, in part, from another common limitation of AI models trained solely on publicly available materials and chemicals data: Academic research tends to report only successful outcomes, omitting data on what didn’t work and which compounds weren’t viable. That can lead models to be overly optimistic about the magnitude and potential of possible materials solutions and generate unrealistic “discoveries” that may have already been tested and rejected.
Because Citrine’s platform is deployed within customer organizations, it can largely sidestep this problem by tuning its model on niche, proprietary datasets. These datasets are small when compared with the vast public repositories used to train Citrine’s base model, but the granular information they contain about prior experiments — both successes and failures — has proven critical to bringing new discoveries to market.
While the holy grail for materials science may be a model trained on all the world’s relevant data — public and private, positive and negative — at this point that’s just a fantasy, one of Citrine’s investors, Mark Cupta of Prelude Ventures, told me over email. “It’s hard to get buy-in from the entire material development world to make an open-source model that pulls in data from across the field.”
Citrine’s last raise, which Prelude co-led, came at the very beginning of 2023, as the AI wave was still gathering momentum. But Mulholland said there’s no rush to raise additional capital — in fact, he expects Citrine to turn a profit in the next year or so.
That milestone would strongly validate the company’s strategy, which banks on steady revenue from its subscription-based model to compensate for the fact that it doesn’t own the intellectual property for the materials it helps develop. While Mulholland told me that many players in this space are trying to “invent new materials and patent them and try to sell them like drugs,” Citrine is able to “invent things much more quickly, in a more realistic way than the pie in the sky, hoping for a Nobel Prize [approach].”
Citrine is also careful to assure that its model accounts for real world constraints such as regulations and production bottlenecks. Say a materials company is creating an aluminum alloy for an automaker, Mulholland explained — it might be critical to stay within certain elemental bounds. If the company were to add in novel elements, the automaker would likely want to put its new compound through a rigorous testing process, which would be annoying if it’s looking to get to market as quickly as possible. Better, perhaps, to tinker around the edges of what’s well understood.
In fact, Mulholland told me it’s often these marginal improvements that initially bring customers into the fold, convincing them that this whole AI-for-materials thing is more than just hype. “The first project is almost always like, make the adhesive a little bit stickier — because that’s a good way to prove to these skeptical scientists that AI is real and here to stay,” he said. “And then they use that as justification to invest further and further back in their product development pipeline, such that their whole product portfolio can be optimized by AI.”
Overall, the company says that its new framework can speed up materials development by 80%. So while Mulholland and Citrine overall may not be going for the Nobel in Chemistry, don’t doubt for a second that they’re trying to lead a fundamental shift in the way consumer products are designed.
“I’m as bullish as I can possibly be on AI in science,” Mulholland told me. “It is the most exciting time to be a scientist since Newton. But I think that the gap between scientific discovery and realized business is much larger than a lot of AI folks think.”
Plus more insights from Heatmap’s latest event Washington, D.C.
At Heatmap’s event, “Supercharging the Grid,” two members of the House of Representatives — a California Democrat and a Colorado Republican — talked about their shared political fight to loosen implementation of the National Environmental Policy Act to accelerate energy deployment.
Representatives Gabe Evans and Scott Peters spoke with Heatmap’s Robinson Meyer at the Washington, D.C., gathering about how permitting reform is faring in Congress.
“The game in the 1970s was to stop things, but if you’re a climate activist now, the game is to build things,” said Peters, who worked as an environmental lawyer for many years. “My proposal is, get out of the way of everything and we win. Renewables win. And NEPA is a big delay.”
NEPA requires that the federal government review the environmental implications of its actions before finalizing them, permitting decisions included. The 50-year-old environmental law has already undergone several rounds of reform, including efforts under both Presidents Biden and Trump to remove redundancies and reduce the size and scope of environmental analyses conducted under the law. But bottlenecks remain — completing the highest level of review under the law still takes four-and-a-half years, on average. Just before Thanksgiving, the House Committee on Natural Resources advanced the SPEED Act, which aims to ease that congestion by creating shortcuts for environmental reviews, limiting judicial review of the final assessments, and preventing current and future presidents from arbitrarily rescinding permits, subject to certain exceptions.
Evans framed the problem in terms of keeping up with countries like China on building energy infrastructure. “I’ve seen how other parts of the world produce energy, produce other things,” said Evans. “We build things cleaner and more responsibly here than really anywhere else on the planet.”
Both representatives agreed that the SPEED Act on its own wouldn’t solve all the United States’ energy issues. Peters hinted at other permitting legislation in the works.
“We want to take that SPEED Act on the NEPA reform and marry it with specific energy reforms, including transmission,” said Peters.
Next, Neil Chatterjee, a former Commissioner of the Federal Energy Regulatory Commission, explained to Rob another regulatory change that could affect the pace of energy infrastructure buildout: a directive from the Department of Energy to FERC to come up with better ways of connecting large new sources of electricity demand — i.e. data centers — to the grid.
“This issue is all about data centers and AI, but it goes beyond data centers and AI,” said Chatterjee. “It deals with all of the pressures that we are seeing in terms of demand from the grid from cloud computing and quantum computing, streaming services, crypto and Bitcoin mining, reshoring of manufacturing, vehicle electrification, building electrification, semiconductor manufacturing.”
Chatterjee argued that navigating load growth to support AI data centers should be a bipartisan issue. He expressed hope that AI could help bridge the partisan divide.
“We have become mired in this politics of, if you’re for fossil fuels, you are of the political right. If you’re for clean energy and climate solutions, you’re the political left,” he said. “I think AI is going to be the thing that busts us out of it.”
Updating and upgrading the grid to accommodate data centers has grown more urgent in the face of drastically rising electricity demand projections.
Marsden Hanna, Google’s head of energy and dust policy, told Heatmap’s Jillian Goodman that the company is eyeing transmission technology to connect its own data centers to the grid faster.
“We looked at advanced transition technologies, high performance conductors,” said Hanna. “We see that really as just an incredibly rapid, no-brainer opportunity.”
Advanced transmission technologies, otherwise known as ATTs, could help expand the existing grid’s capacity, freeing up space for some of the load growth that economy-wide electrification and data centers would require. Building new transmission lines, however, requires permits — the central issue that panelists kept returning to throughout the event.
Devin Hartman, director of energy and environmental policy at the R Street Institute, told Jillian that investors are nervous that already-approved permits could be revoked — something the solar industry has struggled with under the Trump administration.
“Half the battle now is not just getting the permits on time and getting projects to break ground,” said Hartman. “It’s also permitting permanence.”
This event was made possible by the American Council on Renewable Energy’s Macro Grid Initiative.
On gas turbine backorders, Europe’s not-so-green deal, and Iranian cloud seeding
Current conditions: Up to 10 inches of rain in the Cascades threatens mudslides, particularly in areas where wildfires denuded the landscape of the trees whose roots once held soil in place • South Africa has issued extreme fire warnings for Northern Cape, Western Cape, and Eastern Cape • Still roiling from last week’s failed attempt at a military coup, Benin’s capital of Cotonou is in the midst of a streak of days with temperatures over 90 degrees Fahrenheit and no end in sight.

Exxon Mobil Corp. plans to cut planned spending on low-carbon projects by a third, joining much of the rest of its industry in refocusing on fossil fuels. The nation’s largest oil producer said it would increase its earnings and cash flow by $5 billion by 2030. The company projected earnings to grow by 13% each year without any increase in capital spending. But the upstream division, which includes exploration and production, is expected to bring in $14 billion in earnings growth compared to 2024. The key projects The Wall Street Journal listed in the Permian Basin, Guyana and at liquified natural gas sites would total $4 billion in earnings growth alone over the next five years. The announcement came a day before the Department of the Interior auctioned off $279 million of leases across 80 million acres of federal waters in the Gulf of Mexico.
Speaking of oil and water, early Wednesday U.S. armed forces seized an oil tanker off the coast of Venezuela in what The New York Times called “a dramatic escalation in President Trump’s pressure campaign against Nicolás Maduro.” When asked what would become of the vessel's oil, Trump said at the White House, “Well, we keep it, I guess.”
The Federal Reserve slashed its key benchmark interest rate for the third time this year. The 0.25 percentage point cut was meant to calibrate the borrowing costs to stay within a range between 3.5% and 3.75%. The 9-3 vote by the central bank’s board of governors amounted to what Wall Street calls a hawkish cut, a move to prop up a cooling labor market while signaling strong concerns about future downward adjustments that’s considered so rare CNBC previously questioned whether it could be real. But it’s good news for clean energy. As Heatmap’s Matthew Zeitlin wrote after the September rate cut, lower borrowing costs “may provide some relief to renewables developers and investors, who are especially sensitive to financing costs.” But it likely isn’t enough to wipe out the effects of Trump’s tariffs and tax credit phaseouts.
GE Vernova plans to increase its capacity to manufacture gas turbines by 20 gigawatts once assembly line expansions are completed in the middle of next year. But in a presentation to investors this week, the company said it’s already sold out of new gas turbines all the way through 2028, and has less than 10 gigawatts of equipment left to sell for 2029. It’s no wonder supersonic jet startups, as I wrote about in yesterday’s newsletter, are now eyeing a near-term windfall by getting into the gas turbine business.
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The European Union will free more than 80% of the companies from environmental reporting rules under a deal struck this week. The agreement between EU institutions marks what Politico Europe called a “major legislative victory” for European Commission President Ursula von der Leyen, who has sought to make the bloc more economically self-sufficient by cutting red tape for business in her second term in office. The rollback is also a win for Trump, whose administration heavily criticized the EU’s green rules. It’s also a victory for the U.S. president’s far-right allies in Europe. The deal fractured the coalition that got the German politician reelected to the EU’s top job, forcing her center-right faction to team up with the far right to win enough votes for secure victory.
Ravaged by drought, Iran is carrying out cloud-seeding operations in a bid to increase rainfall amid what the Financial Times clocked as “the worst water crisis in six decades.” On Tuesday, Abbas Aliabadi, the energy minister, said the country had begun a fresh round of injecting crystals into clouds using planes, drones, and ground-based launchers. The country has even started developing drones specifically tailored to cloud seeding.
The effort comes just weeks after the Islamic Republic announced that it “no longer has a choice” but to move its capital city as ongoing strain on water supplies and land causes Tehran to sink by nearly one foot per year. As I wrote in this newsletter, Iranian President Masoud Pezeshkian called the situation a “catastrophe” and “a dark future.”
The end of suburban kids whiffing diesel exhaust in the back of stuffy, rumbling old yellow school buses is nigh. The battery-powered bus startup Highland Electric Fleets just raised $150 million in an equity round from Aiga Capital Partners to deploy its fleets of buses and trucks across the U.S., Axios reported. In a press release, the company said its vehicles would hit the streets by next year.