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The eastern and northern United States are suffering under a hazy, poisonous cloud of wildfire smoke, produced by out-of-control forest fires in Quebec and Nova Scotia. The most toxic soot and ash are sitting virtually on top of North America’s most densely populated corridor, clouding the air in New York City; Toronto; Ottawa; Philadelphia, Washington, D.C.; and Norfolk, Virginia.
Air pollution alerts are in effect across the United States and Canada, affecting roughly 150 million people.
This is Heatmap’s set of commonly asked questions about the crisis. We’ll keep it updated throughout the event.
Hundreds of wildfires have raged across northern Quebec for the past few weeks, driven by unusually warm and dry conditions.
Then on Monday, a low-pressure system surrounded by counterclockwise winds moved just off New England’s coast. Its strong, dry gusts fanned the flames in Canada, then pushed the resulting smoke and ash into the eastern United States.
Intense Canadian fires are unusual this early in the season, but the fires this year were fed by a warm spring and drought-like condition, Kent Moore, an atmospheric-physics professor at the University of Toronto, told me. Because the fires took hold before the vegetation could “green up” for the spring, the conflagrations grew more rapidly than they normally would, he said.
The dry conditions also helped the fires ignite the soil itself. “Because the soil was so dry — because of the dry winter and the dry spring — the fire got into the ground,” he said. “The vegetation below ground started to burn, and those are much harder to put out.”
This is likely one of America’s worst days for air pollution in several decades, in terms of the number of people affected and the severity of the exposure, Marshall Burke, an economist and sustainability professor at Stanford, told me.
“It’s pretty off the chart,” Burke said. Wildfire smoke is affecting New York City much more acutely — and much earlier in the year — than it has at any time since 2006, when contemporary air-pollution data began to be kept.
It is difficult to attribute a single unprecedented event to climate change, and the climatology of wildfires in eastern North America is particularly challenging. (Climate change has more clearly worsened wildfires out West.) “This is probably an unlucky year for Canada, as far as wildfires go,” Moore, the atmospheric physicist, said.
But wildfires will become more likely across Canada as the climate changes, he said. And while climate change should broadly increase rainfall across Canada, it will also increase the likelihood of heat waves and more extreme spring and summer temperatures, which can make wildfires more likely.
“Nova Scotia has always had wildfires. It’s just they’ve had more wildfires this year than they have on average for the whole year,” he said. “There’s always going to be wildfires, but there’s going to be more of them.” As Canadian cities sprawl into previously uninhabited woodland areas, he added, the human impacts of wildfires will increase — even if the number and intensity of wildfires does not.
First, consult the air quality index at AirNow.gov. The AQI is a unit-less index of air quality running from zero to 500; any reading above 100 would rank as unusually polluted in the United States. On Wednesday afternoon, some air sensors in New York and New Jersey indicated that the AQI exceeded 400.
If it’s higher than 100, then the most vulnerable groups of people — including children, the elderly, anyone with a cardiopulmonary condition, and pregnant women — should limit strenuous activity outdoors. If higher than 150, then people should generally try to limit their outdoor activity; at levels above 200, the air is considered unhealthy and everyone should try to go outside as little as possible.
If you think you might be especially vulnerable, err on the side of caution. Recently, a body of new and large-scale studies have shown that air pollution is generally worse for the body and brain than previously thought.
Then, if you’re in an area with hazardous air pollution, consider how to limit your exposure to the air as much as possible. Keep your doors and windows closed. An air filter outfitted with a HEPA filter can improve the air in a home or apartment. It should generally be closer to the most sensitive people.
“Any pregnant moms — if my wife or anyone I knew was pregnant right now — I would be texting them to stay inside and sit by an air filter,” Burke told me. Exposure to severe air pollution during pregnancy has been shown to increase the risk of preterm birth, and it can reduce a child’s lifelong earnings, cognitive performance, and other indicators, he said.
A KN95 or N95 mask — the type of high-filtration mask used to prevent COVID infection — can also significantly limit your exposure to soot and ash. If you are in a sensitive group or are worried about air pollution’s health effects, you could consider wearing a mask inside if you have no other way to filter the air.
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Talking with Dan Hartinger, the land conservation group’s senior policy director.
This week’s Q&A is with Dan Hartinger, senior policy director for The Wilderness Society, a prominent land conservation organization in D.C. that this week called for a moratorium on data center development on public land. The public statement was relatively scant on details about the group’s stance, and a decade of reporting on policy in Washington has taught me that its positions are quite influential, especially in more traditional outdoor recreation and conservationist circles that are also often bipartisan. So I reached out and asked if someone could further explain the society’s position, and Dan obliged.
The following chat was lightly edited for clarity.
Let’s start at the beginning. What brought The Wilderness Society to make a call for a moratorium against data centers on public lands?
Like many others, we were concerned about news reporting on industrial-scale data centers being proposed on public lands. When we saw the scale of what was proposed – covering tens of thousands of acres of public lands, being pushed through without public input about whether this was an acceptable use of this land – it became clear we needed to hit the brakes and give the public a chance to evaluate this.
Our mission and vision for The Wilderness Society is not on the broader debate about AI data centers. It’s on public lands. Those are a shared resource we need to manage for the benefit of all Americans. We need to be careful not to sacrifice those for poorly understood impacts from the data center boom.
You called for Congress to do this during the lame duck session. Why call for this now?
We think this is urgently needed now. If we allow public lands to be sacrificed for a data center boom, we could very well never get them back, so we think it’s urgently necessary a moratorium is enacted. We’d love to see the administration institute a moratorium, and we’re rightly skeptical given what boosters they’ve been. It really just kind of leaves it in the hands of Congress.
There’s legislation introduced by Rep. Rashida Tlaib to institute a moratorium on data centers on federal lands, including Interior, Department of Defense, and Energy property. Do you support that bill?
We don’t have any expertise on Department of Energy or Department of Defense lands. I know Sen. Ron Wyden introduced a bill recently to ban data centers on public land managed by the Agriculture and Interior Departments. Our focus right now is on calling for a moratorium. When you’re contemplating a novel industrial use, the public needs time to understand.
Your call doesn’t include the Department of Energy or Defense lands?
We’re not national security experts. We haven’t waded in on whether there are some limited use cases where maybe there’s national security reasons, I guess.
So you want this to happen in a lame duck, when right now the likeliest thing Congress debates is instead building things faster through permitting reform. Does your organization have any stance on the impacts that the permitting reform effort underway in Congress could have regarding data centers on public lands?
We’re still wading through our stance on the [Senate] bill. I don’t know I have much to share on that. We’re concerned about some of the impacts that bill could have on public lands, but there’s also a whole lot of other factors from that bill to weigh.
Talking to folks who are more public about their stances on the bill, and looking at the set of projects even preliminarily underway on federal lands, it’s hard to imagine that changing NEPA and other environmental laws makes things on public lands go slower. I understand you’re still figuring out where you as an organization stand on the bill, but can you speak to the current state of infrastructure development on federal land and changes the administration has made to permitting?
I think through the lens of data centers, narrowly, all of the project reviews and approvals – which is a limited number – have been attempted without additional NEPA analysis. We saw with the Townsite project in Nevada, they tried to claim a solar farm was essentially the same as a data center. There have been authorizations for data centers’ geotechnical surveys approved through categorical exclusions under NEPA.
Certainly, we’re seeing the administration in every single possible opportunity eliminate or shortcut public input and review, and the permitting bill certainly seems to be pointing further in that direction.
The whole rush for speed-to-power over the next few years makes the rest of the Trump administration, should the permitting reform bill become law, feel more important. How does that timing weigh on your organization as you approach the lame duck session? You’re calling for a moratorium on data centers on public lands as we approach a conversation about whether to make it easier to build on federal lands.
That’s why we’re calling for a moratorium eyes open. It’s an uphill push. But if you look at the backlash happening, a lot of it is because the public is concerned these are being pushed forward with very little transparency, or regardless of whether the public supports them, and often done through mechanisms that hide the scale and scope of their impacts. That’s one of the big motivators behind seeking a moratorium. Because this is proceeding so fast, it’s even more essential we pump the brakes and give the public a chance for input.
What do you want to see come after a moratorium? What are the appropriate safeguards? Or do you just not want to see these projects on Interior land?
There are fundamental questions we need answered, including whether the BLM has clear authority to permit and authorize these large projects on public lands. They haven’t answered sufficient questions about that. There’s also the question of the public’s view on this. We don’t want to pre-suppose what the future post moratorium will look like.
There’s just this huge, novel use case, and the public needs to weigh in. If they’re ever given a chance to actually say something, all the polling we’ve seen says the public doesn’t want these on public lands at all. And so, we hope this is also a conversation about what we want for our public lands generally.
Plus more of the week’s biggest development fights.
1. Central Michigan – I regret to inform you of this back-and-forth between candidates running for Congress and a would-be constituent because it’s a warning sign for the renewable energy sector (and sort of broke my brain).
2. Doña Ana County, New Mexico – I suggest you pay closer attention to the federal permitting fight playing out over Oracle’s Project Jupiter.
3. Phoenix, Arizona – Does anyone want to tell me what happened to the Lava Run wind and solar Project?
4. Nashville, Tennessee – Data center developer DC Blox is hitting a roadblock in Nashville. Let’s hope it doesn’t turn into a legal zoo.
The Senate’s compromise bill enters the chat at a moment when federal land and anti-pipeline advocates are already quite activated.
The AI data center backlash is getting louder in D.C. ahead of the midterms – and it’s poised to collide head-on with the new permitting reform deal being negotiated in Congress.
This week, major environmental advocacy organizations are taking large public steps to lean in on the data center fight. The League of Conservation Voters and Natural Resources Defense Council, I’ve been told, are imminently announcing a $250,000 ad buy in the Washington, D.C. market focused entirely on decrying fossil fuel-powered data centers and Trump administration policies to speed up their construction. The Wilderness Society, a prominent land conservation organization, announced it now supports a moratorium against data centers on “public lands” focused on the roughly half billion acres under the Interior Department’s stewardship. And Earthjustice on Thursday did a detailed report claiming that 80% of the data centers under development “bringing their own power” are going to rely on gas generation.
“We are trying to reach a D.C. audience and add to the conversation on data centers,” Sara Chieffo, LCV’s head of government affairs, told me of the ad buy. “We’re at a time when there have been no regulations passed at the federal level on Big Tech, or data centers, and we have communities from very many different backgrounds, across the political spectrum, really shouting for enforceable safeguards to be put in place for data center development. For their pocket book, for air and water, and for having a say in what their actual communities look like.”
In a vacuum, all of this action would feel normal – what environmental organization isn’t focused on data centers right now? And if this much fossil fuel is going to be burned in the name of computing, why wouldn’t these groups be focused so intently on the problem?
But there’s another wrinkle: It’s impossible to ignore the elephantesque permitting debate in the room, given any progress on a bill would undoubtedly help data centers with any kind of federal nexus, as well as some of the large fossil power infrastructure they’re demanding.
Last week, we all learned of the Bipartisan American Affordability and Jobs Act, or BAAJA, which would radically change federal permitting for essentially all large infrastructure projects with a federal nexus. The bill, negotiated by top Republicans and Democrats in the U.S. Senate, aims to expedite bureaucratic review processes for industrial projects with any presence on federal lands, water pollution risk covered under the Clean Water Act, and/or potential impacts to federally-protected species habitat and historic sites. Many of these changes, like significantly narrowing claims under the National Environmental Policy Act, could mean quicker permitting decisions from the federal government; other policies in the bill, like a truncated statute of limitations for lawsuits, could mean developers avoid significant and costly litigation risk as they apply for federal permits.
There’s a lot to potentially love in this bill for decarb hawks – transmission reforms and permitting certainty, among other things. But the bill is incredibly divisive, especially amongst those interested in seeing renewable energy boosted without undue compromise for fossil fuel development and preserving the existing legal framework for protecting the environment through litigation. So controversial is this bill that all of the organizations I’ve mentioned – LCV, Sierra Club, NRDC, Wilderness Society, Earthjustice – have so far eschewed explicit formal statements opposing the bill, instead expressing caution about air and water impacts while saying they need more time to review it and speak with lawmakers.
It’s clear though the environmentalist community wants people to think about data centers as debate on the bill approaches. Those who publicly oppose the bill at this moment say its enactment under the current administration would fully unlock federal acreage for the worst incarnation of an unfettered fossil-powered data center boom. “In any permutation, this bill is a good thing for data centers,” said Brett Hartl, director of government affairs for Center for Biological Diversity. After the bill was introduced, an organizing call between environmentalists leaked revealing discussions on how to stop it from gaining traction. One idea raised, per a transcript of the call published by Punchbowl News, was leaning heavily into talking about AI data center permitting.
I asked Chieffo if the LCV ad buy was related to the permitting debate in D.C. She told me it was in the works before senators introduced the bipartisan permitting deal last week. “This is a longstanding focus of ours, to make sure the buildout of data centers do not perpetuate dirty energy or exacerbate the climate crisis,” she told me. Then I asked, if this isn’t about the permitting bill, but it is about federal policy about approving data centers, then how do AI data centers play into the conversation around permitting reform? Do you see the AI data center conversation playing a role in the permitting reform debate?
“The way I would answer that is, well, there are equities and impacts that permitting reform has on the ability to build data centers in this country. And there’s a much larger conversation that should be happening – and isn’t yet happening – around fully holding data centers and Big Tech accountable for their environmental and consumer impacts, safety, and broader regulation. It’s a much bigger conversation than just permitting conversations,” Chieffo told me.
Then she added something else: “The provisions in conversation right now in the Senate do not cover the full suite of what we believe we need to see to hold data centers accountable and address the environmental impacts, let alone the other impacts folks are concerned about with jobs, safety and the rest.”
There’s absolutely a hypothetical risk that enacting such sweeping permitting legislation could enable a faster fossil-powered AI data center buildout, particularly in two ways: federal land development and easier pipeline permits.
We know that President Trump’s executive order encouraging data centers on federal land has led to interest in developing large projects on Interior Department acreage in Arizona, Idaho, Nevada, Oregon, and Utah. How many of these projects are serious is unclear, partially because the federal land permitting process is opaque, and also due to some permitting applications gleaning more early-stage speculation than a commitment (see: Clearway’s reversal on this project). At least some of this development would be powered by gas, as we’ve previously covered.
There’s also the pipelines. We’ve previously covered how the bill’s changes to the Clean Water Act would take away a provision under the law previously cited by Democratic governors to block pipeline expansions, while limiting state and tribe authority under the law to cite impacts other than direct water discharges when rejecting or blocking permits. In the name of project certainty, the bill would also enshrine protections against approval revocation for all kinds of energy facilities, including pipelines. Many of the pipelines under development today are capacity expansions and not explicitly for data centers, and many of them may be approved regardless of whether BAAJA becomes law. But it’s almost impossible to divorce new gas projects from the data center industry’s fortunes, given climbing demand.
Advocates for decarbonizing the U.S. economy who support the bill say the legislation offers a safer trade-off than critics suggest. They put forward that most data center development is not on federal lands, rendering much of the actual AI infrastructure outside the scope of the bill’s impacts. In addition, they argue there are potential upsides, like the bill’s provisions unlocking new transmission development, expediting interconnection queue processing, and making data center developers pay for new energy grid upgrades, all of which could be good for renewable energy development.
Grayson Flood, a senior fellow at Groundwork Collaborative, told me he believes the bill will actually incentivize more data center developers to hook up to the grid and may result in fewer projects relying on off-grid gas plants constructed purely for operating GPUs. Studies have shown building off-grid can be almost twice as expensive. By reducing barriers to connection, and encouraging new transmission that unlocks renewable energy, Flood said one can easily see a pathway to a cleaner data center sector in the future under the bill.
“At the end of the day, if you want these data centers to be powered by clean, firm capacity, anything from solar and storage to wind and storage to nuclear, geothermal, and hydropower, you’re going to need to have a grid that can bring those sources to the data centers, and right now we really don’t have that,” said Flood, who previously worked as legislative director for Rep. Alexandria Ocasio-Cortez. “At a macro level, we need the bulk power system built out to see the power we want to see, and this bill makes data centers pay more than any other piece of proposed federal legislation to make that happen.”
Where does this leave us? Over the next month, we’ll live through a midterms election cycle chock full of ads activating anti-data center sentiments on both sides of the aisle. Then, right afterwards, the energy sector will pivot its attention span back to Congress and fight to pass a permitting bill that will not primarily benefit data centers, but clearly has upsides its opponents will want to call attention to.
Editor’s note: This story has been updated to correct the organization collaborating on the ad buy with LCV.