You’re out of free articles.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:

If Vice President Kamala Harris is elected president in November — as is looking increasingly likely — her term will last until the beginning of 2029. At that point, we’ll have a much better idea whether the planet is on track to hit the 1.5 degrees Celsius climate threshold that some expect it to cross that year; we’ll also know whether the United States is likely to meet the first goal of the Inflation Reduction Act: to reduce national greenhouse gas emissions to half of 2005 levels by 2030.
There is a lot riding on the outcome of the 2024 election, then. But even more to the point, there is a lot riding on how, and how aggressively, Harris extends President Biden’s climate policies. Last week, I spoke to nine different climate policy experts about what’s on their wishlists for a potential Harris-Walz administration and encountered resounding excitement about the opportunities ahead. I also encountered nine different opinions on how, exactly, Harris should capitalize on those opportunities, should she wind up in the White House come January.
That said, the ideas I heard largely coalesced into three main avenues of approach: The first would see Harris use her position to shore up the country’s existing climate policies, doubling down on spending and addressing loopholes in the IRA. A second path would involve aggressively expanding on Biden’s legacy, mainly through major new investments. The final and most ambitious path would involve Harris approaching climate change and the energy transition with an original and bold vision for the years ahead (though your priorities may vary).
The policy proposals that fall under these loosely organized paths aren’t necessarily mutually exclusive, and, as you’ll see, some of the advocate’s proposals fall into multiple categories. But it’s also true that by making everything a priority, nothing is. With that in mind, here are three approaches climate insiders say Harris could take if she wins the White House in November.
Before jumping headlong into expanding the country’s climate policies, the Harris administration could start by shoring up existing legislation — mainly, the loopholes and oversights in the Inflation Reduction Act. “The IRA was the biggest climate investment in history and fundamentally changed the emissions trajectory of the U.S — but the work is not done,” Adrian Deveny, founder of the decarbonization strategy group Climate Vision who previously worked on the IRA as Senate Majority Leader Chuck Schumer’s director of energy and environmental policy, told me.
As things stand, the policies in the IRA alone won’t be enough to meet President Biden’s goal of halving the nation’s greenhouse gas emissions by 2030; to do that, the U.S. would “need to pass another IRA-sized bill,” Deveny said. Until that happens, filling the IRA’s emissions gaps will take a lot of work “in every sector of the economy,” he added.
Lena Moffitt, the executive director of Evergreen Action — which has already released a comprehensive 2025 climate roadmap for a Harris administration — told me that the task of “doubling down on Biden’s climate legacy as a job creator” will run through rebuilding and expanding the grid and revitalizing industry and rural economies, two projects that started in the IRA but remain incomplete. “We’d love to see a day one executive order from the White House outlining a plan to create American jobs and seize the mantle of leadership by building clean energy and clean tech in the United States,” she told me.
Permitting reform is part of that — and could be another piece of yet-unfinished business Harris will need to wrap up. “If that doesn’t get done this year, that is what we have to look to as soon as possible during a future Harris administration,” Harry Godfrey, who leads Advanced Energy United's Federal Investment and Manufacturing Working Group, told me.
That’s not the only regulatory matter still up in the air. Austin Whitman, the CEO of The Climate Change Project, a non-profit that offers climate certification labeling and helps businesses reduce their emissions, told me that the Federal Trade Commission, for example, still hasn’t updated its green guides — “a loose collection of recommendations to companies on how to behave to not violate the FTC Act” — since 2012. “We just need a clear timeline and a sense of direction of where that whole process is going,” Whitman told me. Additionally, he said that the government has a substantial and outstanding role to play in standardizing and streamlining emissions reporting practices for businesses — which, while perhaps not “very sexy,” are necessary to “relieve the administrative burden so companies can focus on decarbonization.”
The last piece: Make sure everything that’s already in place is actually working. “We’re seeing that states and local governments need additional capacity to manage [the IRA] money well,” Jillian Blanchard, the director of Lawyers For Good Government’s climate change program, told me. Harris could help by enacting “more tangible policies like granting federal funding to hire community engagement specialists or liaisons or paying for the time of community leaders to provide local governments with key information on where the communities are that need to be benefited, and what they need.” She also floated the idea of a Community Change Grant extension to help get federal funding to localities more directly.
“One of the criticisms of the Inflation Reduction Act is that it didn’t do ‘X’ — whatever ‘X’ is,” Costa Samaras, the director of the Wilton E. Scott Institute for Energy Innovation at Carnegie Mellon and a former senior White House energy official, told me. “And in reality, it probably did. It just didn’t do it big enough.”
As opposed to those who thought Harris should take a quieter, dare I say conservative approach to advancing the U.S. climate agenda, Samaras told me he wanted to see Harris pump up the volume. The current climate moment requires “attacking the places where we need to immediately make big emissions cuts and big resilience investments. This is the industrial sector, the cultural sector, heavy transportation, as well as making sure that our cities and communities are built for people.”
There are plenty of existing programs that could take some supersizing. Godfrey of Advanced Energy United brought up the home energy rebate programs, arguing that as things stand, those resources are only serving “a fraction of the eligible population.” Blanchard of Lawyers For Good Government also pointed out that the Environmental Protection Agency had almost 300 Climate Pollution Reduction Grant applications totaling more than $30 billion in requests — but only $4.3 billion to hand out. “There are local governments, state governments, tribal nations, and territories hungry for this money to implement clean energy projects,” she said. “There are plans that are ready to go if there are additional federal award dollars in the future.”
Another place Harris could expand on Biden’s legacy would be by reinstating the U.S. as a climate leader on the world stage. “We need to say, ‘climate is back on the table,’” Whitman of The Climate Change Project told me. “It’s a main course, and we’re going to talk about it” — something that would give us “a more credible seat at the negotiating table at the COPs.”
Perhaps most importantly, though, Harris needs to use her term to start looking toward the future. As Deveny of Climate Vision told me, “We designed the IRA to think about meeting our 2030 target. And now we have to think about 2035.” Looking ahead isn’t “just about extending policies,” in other words, but about anticipating new technologies and opportunities that could arise in the next decade — and Harris, if elected, should step up to the challenge.
Some believe Harris shouldn’t limit herself to the framework of the IRA as it exists now — that she needs to dream bigger and better than anything seen under the Biden administration. “The question is: Are we going to just ride the coattails of the IRA as if this problem is mostly solved? Or are we going to put forward a whole new, bold vision of how we can take things on?” Saul Levin, the political director of the Green New Deal Network, wondered to me.
According to Deveny of Climate Vision, that means continuing to build on “our industrial renaissance.”
“We have really awakened a sleeping giant of clean industrial manufacturing in this country to make solar panels, wind turbines, and batteries,” he explained. “We can also lead the world in clean industrial manufacturing for steel, cement, and other heavy industry projects.” Samaras of Carnegie Mellon, too, shared this vision. “By the end of a potential Harris Administration first term, the path to zero emissions should be visible everywhere,” he told me. Also on his wishlist were “abundant energy-efficient and affordable housing, accessible clean mobility infrastructure everywhere, schools and post offices as community clean energy and resilience hubs, and climate-smart agriculture and nature-based solutions across the country,” plus greater investment in adaptation.
“The fact is that both the Bipartisan Infrastructure Law and Inflation Reduction Act are the largest investments in resilience we’ve ever done,” he said. But “we have to think about it the same way we have to think about mitigation,” he went on. “It’s the largest thing we’ve ever done — comma, so far.”
One of the biggest openings for Harris to distinguish herself from Biden, though, would be by taking a tougher tone with big polluters. Biden had shown less of an appetite for going after businesses, several times kicking the can down the road on a decision to what would have been his second term. Harris, by contrast, is well positioned with her background as a prosecutor and already went as far as to call for a “climate pollution fee” and the creation of an independent Office of Climate and Environmental Justice and Accountability during her 2019-2020 campaign.
“We love seeing her already reference from the stump that there is a lot that she can do with Congress or through the executive branch to hold polluters accountable for the toll that they have taken on families and our climate,” Moffitt of Evergreen Action told me. “That could look like a host of things, from repealing subsidies to using the Department of Justice to hold polluters accountable.” Maria Langholz, the senior director of Arc Initiatives, a strategy group that works with climate-related organizations, told me in an email that her team would also like to see the Harris administration revoke the presidential permit for Enbridge’s Line 5 pipeline as high, in addition to developing a public interest determination “that fully addresses the social, environmental, and economic impacts of LNG.”
But Levin, more than anyone else, wanted to see Harris pursue a “moonshot campaign from day one,” he said. “Hoping that tweaking the IRA is an appropriate solution to climate change is totally out of step with mainstream scientific consensus. It’s absolutely ridiculous. At the end of the day, we need to fundamentally transform our economy so that all people can survive climate change.” To have a prayer of meeting the IRA’s climate goals — let alone putting a meaningful dent in America’s contribution to global emissions — the U.S. must “invest trillions of dollars in transforming our transportation system, our building sector, our food and agriculture sector, and every part of the economy so that we can create a livable, sustainable world forever that works for everyone.”
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Deciding what counts as a heat death is more difficult than it sounds.
Just last month, a heat wave killed an estimated 2,700 people in France. Think about that for a second: 2,700 people. That’s equivalent to the mortality of two Hurricane Katrinas or 10 Hurricane Sandys. In France, where there were roughly 970 murders in 2024, the heat wave killed more people in two weeks than almost three years’ worth of homicides.
But unlike floods, hurricanes, tornadoes, or murders, heat doesn’t leave behind much of a crime scene. Although heat kills people in obvious, direct ways like heat stroke, it also puts enormous strain on our hearts and kidneys as our bodies work to keep our internal temperature at 98.6 degrees Fahrenheit. Heart attacks spike during heat waves because vasodilation diverts blood to the skin’s surface to cool it down, in the process lowering blood pressure and forcing the heart to work harder and faster to circulate oxygen. Deaths from renal diseases also jump during periods of high temperatures due to severe dehydration and restricted blood flow to the kidneys.
“Let’s say you have two people with underlying heart disease; somebody has a heart attack versus somebody has a heart attack because it’s too hot,” Kristie Ebi, an epidemiologist at the University of Washington and an expert on heat-related mortality, explained to me. “Will the second one be recorded as a heat death or will it just be recorded as a heart attack? Frankly, when both go into the emergency department, the number one goal is to save a life — it’s not necessarily to record whether it was because of temperature.”
But if physicians don’t code the second heart attack as a heat death— a procedure designed for insurance and billing rather than getting to the root of underlying environmental conditions — then the headline number of heat wave-related deaths will almost certainly be an undercount. In Washington during the 2021 heat dome, for example, the state health department initially reported that 129 people died from the temperatures. But later analyses compared the overall number of people who died that week in the state to the average number of people who died during the same week from 2013-2019 and concluded that there were 485 “additional” deaths compared to what would have been expected during normal early summer conditions.
Those 485 deaths are called “excess deaths,” and the number offers a broader picture of who actually dies from a heat wave. The tally captures not only those heart attacks that are coded by physicians and medical examiners as caused by the heat, but also the ones the state may have overlooked or discounted. Air pollution deaths, homicides, drownings, and accidents, for example — all of which also spike in relation to heat waves — show up. As one epidemiologist explained it to the Seattle-area NPR affiliate KUOW, a boating death might count as an excess heat death, too, because while “not directly attributable to heat in the sense of heat stroke … it arguably is attributable to heat in the sense that had it not been hot, they would not have gone out.”
Excess death analyses are also methodical in what they don’t count. “After a heat wave, there’s a deficit in the number of deaths, which means that the heat wave brought forward deaths that would have occurred anyway,” Ebi told me. The analyses also take those into account to model only the “true” excess events. This, at least, is relatively simple in scope: The advantage of heat waves for mortality accounting is that they don’t have the long tails associated with hurricanes and other weather-related tragedies. “Deaths occur over a few days of a heat wave, and then it’s over,” Ebi added.
But the calculation, while relatively straightforward, has its critics, too. “The limitation of that approach is that it doesn’t actually quantitatively attribute that excess mortality to the heat,” Christopher Callahan, a climate scientist and assistant professor at Indiana University Bloomington, told me. Take the boating accident example: Maybe if it’d been a regular summer day, the enthusiast still would have taken his pontoon out and had all those beers. Maybe during the heat wave it was also smoky, and that caused some of the excess deaths. There’s also the possibility that the baseline number of deaths already includes some baked-in heat-related deaths, obscuring the cumulative total.
A third approach, favored by academics — and recently employed by Callahan to estimate the 2,700 heat-related deaths in France last month — involves using long-term data on both temperatures and mortality for a given location and then fitting a statistical model that relates the two. This method has the advantage of generating a U-shaped relationship that shows how mortality rates change once temperatures exceed a certain threshold (or drop below it, in the case of cold-weather-related deaths, hence the “U”). Like an excess death analysis, this method “has the benefit of, again, not having to rely on individual diagnoses,” Callahan said. “It has the drawback that there is no one right statistical model. Different people have different philosophies about how to fit those models.”
The other drawback is that creating such a model and subjecting it to the rigor of peer review is time-consuming — by the time you’re able to publish a death toll, the news cycle has probably moved on. Callahan got lucky: He had already created such a model for France to study the 2003 heat wave, which killed an estimated 15,000 in the country in a couple of weeks. The model relies on a historical understanding of the relationship between temperature and mortality in France — “not a crazy assumption, but an assumption,” he admitted to me — and he published the findings in Carbon Brief earlier this month. (Callahan also estimated that 20,000 people died continent-wide in Europe during the June 2026 heat wave — a number that circulated widely, but that he told me he’s now working to revise downward.)
Notably, the number Callahan arrived at for France does not represent “real” people or “real” deaths, at least as linked to death certificates. There are no biographical or even demographic numbers attached to it. (That said, you can create models of the same U-shaped relationship for anything: temperature and age, income, race.) More mind-bending, though, is that because of this, Callahan’s model can also be used to predict. Had there been a way to know the exact temperatures before the European heat wave, he could have told you how many people would likely die before they actually did.
In the case of France, the simple excess death count put the toll at 2,025, though officials say they expect the number to rise. While Callahan’s number and the official tally from France differ by what seemed to me to be a lot — 675 deaths — Callahan told me he’s actually encouraged by how close his model came to the government’s empirical count, given that the two use completely different methodologies.
After all, heat death counts can vary by orders of magnitude, including within a single government. Before 2020, the Centers for Disease Control and Prevention reported that only about 700 Americans died each year from heat, relying primarily on physician diagnostic codes. After moving in recent years to better incorporate underlying and contributing causes of death, the CDC adjusted its estimate upward to about 2,000 heat-related deaths per year in the United States. Still, the government’s numbers remain extremely conservative; independent researchers studying heat mortality say the figure is likely closer to 12,000.
But even more holistic heat-related mortality numbers have their critics. For example, models don’t work as well for many lower-income countries, where mortality may be reported monthly, thereby making day- or week-level heat attribution impossible.
Granularity presents its own set of problems. Excess deaths and modeling analyses both have to define the first “heat day” of an event. You can do that by setting a fixed threshold — say, anything above 90 degrees Fahrenheit counts as “high heat” — but Ebi told me there is little value in analyses or policies that take that approach. That’s because heat is contextual: “My standard joke is, if we had the temperatures here in Seattle that they have in Phoenix, we basically all die, because we don’t have the infrastructure and we’re not acclimatized,” she said.
A slightly better metric might be a relative threshold — say, temperatures above the 95th percentile of historical temperatures for a specific location count as “extreme heat.” The problem there, though, is that it may need to be stratified further by vulnerable populations that feel the effects much sooner, like adults over the age of 65, pregnant women, outdoor workers, or people with certain medical conditions. While that approach might seem overly complicated, parts of Asia already use nuanced thresholds to warn older adults to take precautions. “It’s going to be more challenging to communicate, I grant you that,” Ebi told me of such an approach — much less to try to model. “But it’s also going to be more useful.”
Even so, a larger problem remains: The multiple systems for calculating heat deaths are honed to address different questions, which makes them impossible to compare. The Federation of American Scientists has pushed for the CDC to upgrade and standardize its heat-mortality tracking. “We’ve thought about if it’s possible to ever set a goal of bringing heat-related deaths down by 50%, or something like that,” Grace Wickerson, the senior manager of climate and health at FAS, told me. “But we don’t even have a baseline number or a way to say, ‘This is the starting point for this goal or strategy.’”
Wickerson also suggested, though, that there might be things we lose in trying to nail down the most correct heat-related mortality number. “I’m almost a bit weary of the pursuit of large numbers,” she said. “At least to me, what feels more important is why people are suffering and dying, what types of people they are, and what stories, messages, and stakeholders we need to engage and target to actually build meaningful policy strategies.”
Despite being deeply engrossed in the calculations, Callahan stressed that he wants readers to have a similar takeaway from his own research. Improved “healthcare access and access to cooling, shade, and shelter” — or in the case of heat-related mortality from climate change, “reducing greenhouse gas emissions” — lead to fewer heat deaths, meaning the vast majority are preventable.
“The relationship between environmental conditions and a person’s mortality is not fixed or necessary,” he told me. “It can be stopped.”
Current conditions: Canadian wildfires smoke has returned to the Northeast United States, worsening air quality across the region • Catastrophic 1-in-1,000-year floods devastated Missouri’s Black River region, right as intense rainfall is headed for Texas • Temperatures in Beijing are set to drop by nearly 10 degrees Fahrenheit after roasting at nearly 100 degrees yesterday.
PJM Interconnection just released the results of its latest capacity auction for 2028 to 2029, and the nation’s largest grid system maxed out its prices yet again. The clearing price hit its cap of $325 per megawatt-day, all while PJM failed to line up enough supply to meet its incoming demand with a sufficient margin of safety. “These auction results show that demand for electricity continues to grow faster than electricity supply,” PJM CEO David Mills said in a statement. “At the same time, PJM recognizes how this supply-and-demand imbalance impacts the reliability of the system and costs for consumers. We are working with government and industry leaders on multiple fronts to restore that balance by bringing on new generation as fast as possible and managing the growth of new load on the grid.” But Julia Kortrey, the director of strategic initiatives for state-level programs at the climate advocacy group Evergreen, said PJM had just “delivered more bad news for people already struggling with higher energy bills,” and accused the grid operator of slow-walking “cheap, clean energy that could lower bills.”

Back in April, I told you about Clean Core Thorium Energy. The Chicago-based startup is dusting off a decades-old dream of harnessing abundant thorium as a fuel for nuclear reactors to replace uranium, which is rarer and produces more long-lived radioactive waste. In the spring, the firm inked a handful of deals to begin manufacturing its first fuel assemblies using thorium. Now, I can report exclusively, Clean Core has surpassed a technical milestone for its fuel with the publication of a comprehensive peer-reviewed engineering assessment in the journal Nuclear Engineering and Design. The paper comes after the company completed a multi-year campaign of irradiating the fuel at the Idaho National Laboratory’s Advanced Test Reactor. The results showed that the fuel can be used in an existing pressurized heavy water reactor, like those that make up the bulk of the Canadian and Indian fleets, and achieve a high “burnup” of the material. “Milestones in this industry are earned in reactors, not in renderings,” Mehul Shah, Clean Core’s chief executive and founder, told me in a statement. “The analyses underpinning the fuel’s design have now withstood the scrutiny of peer review in one of the field's leading journals.”
Google has agreed to buy the entire initial output of a sweeping solar project in Arkansas in a bid to offset its fossil fuel emissions. On Tuesday, the Financial Times reported that the tech giant would purchase the full 1.6 gigawatts of solar power and 2 gigawatt-hours of battery storage from the first phase of construction on the Steel River Energy Center, set to be complete in 2029. The second phase will up the output to 2.5 gigawatts of solar and 2.9 gigawatt-hours of storage. The panels will all come from First Solar, the U.S. manufacturer that boasts a 100% domestic supply chain. None of Google’s data centers will use the electricity, but the power will serve as an offset to gas-fueled operations elsewhere.
It’s hardly the only bullish sign for solar. In June, Europe generated a quarter of its power from photovoltaics for the first time, according to an analysis by the renewables-focused think tank Ember. “Solar’s rise has been truly stratospheric, beating prediction after prediction,” Chris Rosslowe, a senior energy analyst at Ember, said in a statement. “In just a few years solar has gone from a small player to an essential part of Europe’s power system, as governments and citizens look for low-cost, quick-to-install domestic power sources.”
Sign up to receive Heatmap AM in your inbox every morning:
You can’t make it here, but you can — at least, for now — make it anywhere else. New York Governor Kathy Hochul signed an executive order Tuesday enacting the nation’s first state-level moratorium on building large-scale data centers. The one-year pause “will ensure New Yorkers are not paying for transmission and infrastructure build outs” and will give Albany time to create a statewide investment framework to direct more benefits from projects to local communities, the governor’s office said in a press release. “New York will lead the way in creating the strongest standards in the nation for data center development, ensuring that when companies succeed because of New York, New Yorkers succeed too,” Hochul said in a statement. She also vowed to press the legislature to pass a bill to repeal sales tax exemptions from large data center projects.
It’s no surprise. At least seven in 10 Americans oppose data centers built near their homes, Heatmap Pro polling showed last month. That’s at least partly driven by the perception that data centers are driving up electricity costs. Utilities requested $18.6 billion in electric and gas increases in the first six months of this year, according to a new report from the grid-focused nonprofit PowerLines. More than $9 billion of those requests were filed in the second quarter of this year alone, surpassing the total for the same period in 2025 — which was itself a record — by 26%. “Summer is when Americans pay attention to what electricity costs because their utility bills are often higher,” Charles Hua, PowerLines’ founder and executive director, said in a statement. “The amount of utility rate increase requests in these filings shows the pressure on household energy bills isn’t easing.”
Realta Fusion, a magnetic mirror fusion startup, announced plans Wednesday to convert an iconic former Oscar Mayer plant in Wisconsin into its corporate headquarters and research hub. As part of the deal, the state and its capital city of Madison will contribute $55 million to support the conversion. The facility will employ more than 600 people in technical and non-technical roles. “We spent the better part of the past two years searching across the country to find the most favorable business environment and the most attractive site to build our R&D facility, and we found it in our own backyard,” Realta CEO Kieran Furlong said in a statement. “The state of Wisconsin and the city of Madison have made it clear they understand the promise of fusion energy and share our vision for the future, and now they’ve thrown their lot in together to make that vision a reality.” It’s yet another sign, as my colleague Katie Brigham put it in 2024, that fusion is “finally, possibly, almost” here.
Meanwhile, some fission news: Remember when I told you last month about why I try to cover all the major milestones in China’s nuclear construction projects? Well, I have another update: China General Nuclear, one of the country’s two main state-owned nuclear companies, just installed the reactor pressure vessel for unit 1 of the Lufeng nuclear plant in Guangdong province. In a statement to World Nuclear News, CGN, as the company is known, said the latest item off the construction checklist marks “the beginning of the peak period for the installation of main system equipment in the nuclear island of unit 1 and lays a solid foundation for the orderly progress of subsequent key processes such as the installation of main pipelines.”
There are thousands of ways to pull a climate or energy angle out of Russia’s ongoing war in Ukraine. Here’s one: Tajikistan isn’t receiving as much Russian oil and gas as before, given Ukraine’s campaign of drone attacks on key pipeline and refinery infrastructure, so it’s looking to ramp up its own drilling operations again. On Monday, the Times of Central Asia reported that Tajik Energy Minister Daler Juma said the country had only enough fuel to last about two months.
Rob sits down for a conversation with Stardust Solutions CEO Yanai Yedvab.
For more than 30 years, a heterodox group of scientists have proposed injecting sulfate aerosols into the stratosphere to reflect sunlight away from Earth, thereby cooling the atmosphere and reversing climate change.
But actual research into the idea has remained taboo, or at least the province of university and government labs. Then, last year, Heatmap broke the story of an Israeli-American company named Stardust Solutions that had raised $60 million to develop a new solar geoengineering technology. This system would be easier to control and track than the traditional approach to geoengineering, it claims.
On this episode of Shift Key, Rob is joined by Yanai Yedvab, the cofounder and CEO of Stardust. They discuss why Stardust is researching geoengineering now, whether a for-profit company belongs in the space, why Yanai believes Stardust’s particles are superior to sulfate aerosols, and whether Stardust has or will ever conduct outdoor experiments.
Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap News.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from their conversation:
Robinson Meyer: It’s an inert particle — or it dissolves, right? If it dissolves and breaks down in water, is it really inert? Because on the one hand, we’re saying, oh it’s inert when it’s sprayed in the atmosphere, and on the other hand, oh but it dissolves in water. But a particle that dissolves doesn’t seem to me to be a particle that could be inert, so ... And then if it’s inert then it would bioaccumulate, right, because that’s, you know, plastic, for instance is inert and what we’ve learned is that plastic is bioaccumulating in tissue.
So walk through, how can it be inert and also dissolve in water and break down through a number of natural processes that exist in the Earth system already?
Yanai Yedvab: It sounds like a paradox, right? And the short answer is the difference between the air atmosphere, the stratosphere, where we need these particles to be inert, which is very, very dry, contains primarily sulfates and a few other trace gases. But much, much cleaner and drier than the atmosphere. And yes, you’re right. In that environment, the particle is inert. And once it falls on the ground, where you have enormous amount of water and vapor and all the other components, these components are able to dissolve it.
But I think that I would say the more fundamental point that you’ve been making in your question is that essentially you need to meet a very strict set of requirements. Part of it has to do with the stratosphere. Part of it has to do with the atmosphere. And to your question, why do we believe that the right way to do it is to actually develop the technology? It’s because in the end of the day, only when you’re walking through these problems and you are able to do, for example, I would say, micromanagement of the surface properties of the particle and make sure exactly, as you were saying, that it will be inert when it’s up there in the sky but once it falls, it will dissolve, is when you have a potential to come up with a solution that works.
So yeah, it looks like a paradox but the bottom line is that we were able to demonstrate that we can do both. That we can make sure that it’s inert up there but it dissolves when it falls on the ground.
You can find a full transcript of the episode here.
Mentioned:
Rob’s initial story on Stardust: Stardust Solutions, a Geoengineering Startup, Raises $60 Million to Build a Solar-Reflecting System by 2030
Stardust’s new governance commitments
What we know about Stardust’s tiny spheres
This episode of Shift Key is sponsored by ...
Tandem PV is the leader in perovskite solar technology. We’re building the most efficient and durable perovskite solar panels on the market at our factory in Freemont, California. Learn how we're restoring U.S. leadership for the next era of solar manufacturing at tandempv.com.
Music for Shift Key is by Adam Kromelow