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We’re now a quarter of the way through the 21st century, and it’s indisputable that climate is one of the most important stories of our time. That’s our philosophy here at Heatmap, but just about everything around us illustrates it, too — from government policy and tech to movies and reality TV.
And of course — or maybe, especially — books.
It’s been about 17 years since the term “cli-fi” (or “climate fiction”) was first coined, and in the meantime, books that touch on climate themes in both fiction and nonfiction have taken off like the Keeling Curve. In 2025, we’ll be reading novels that imagine life in San Francisco after years of deluge and investigative reports into subjects such as how companies have gotten away with dumping forever chemicals into the environment for so long. There will be new natural histories to dive into — on the desert, forests, prairies, and even on the chemical compound CO2 — as well as new frames of thinking about climate change and how we approach its solutions.
Because so many 2025 books will touch on climate themes, I’ve set aside a section of honorable mentions at the end of this list that are also worth checking out. The division doesn’t indicate quality; I chose the primary 18 based on my subjective excitement and to showcase different genres, publishers, and authors. It might be in the appendix that you find a book on the topic you’re personally most excited about (Arctic exploration? Solar geoengineering? Florida-set family dramas?) for next year.
Finally, if you want to see all these books in one place or judge them by their (excellent) covers, you can browse our curated list on Bookshop here.
The U.S. government’s Fifth National Climate Assessment section on the Southwest reads like an apocalyptic horror story: “Heat-related mortality,” “increased wildfire risks,” and “longer and more severe droughts” all make it into the opening few paragraphs. The truth is that the hottest and driest region of the United States is home to 60 million people, many of whom will have to adapt to a more extreme future in the coming years. In New Mexico-born journalist Kyle Paoletta’s debut book, American Oasis, he traces the allure of places like Albuquerque, Phoenix, El Paso, and Las Vegas back to the Athapaskan migration from the sub-Arctic around 1100 BCE and through the heydays of Arizona Highways, a magazine from the 1950s, while also charting what lies ahead for those who are drawn to making the desert, however impossibly, their home. Preorder it here.
Speaking of the American desert, on the fiction side of things this winter comes Madeleine Watts’ latest novel, Elegy, Southwest. Watts made a name for herself as a writer of cli-fi after the release of her 2021 novel, The Inland Sea, set against the backdrop of Australia’s fires and floods, and she returns this year with a road trip novel that follows Eloise, a doctoral student studying the Colorado River and climate change. As part of her research, Eloise flies to Las Vegas for a road trip through the Southwest with her husband, Lewis, to whom the novel is addressed. Along the way, Eloise begins to believe she’s pregnant, while Lewis struggles with the fresh grief of losing his mother. As Watts told an interviewer of her process for The Inland Sea, “I wanted to write … about what it’s like to live in the experience of a changing climate that is not always a tangible part of your day-to-day but that’s already there – it’s in the air all around you.” Expect a similar treatment this go-round.Preorder it here.
Eric Puchner’s new novel, Dream State, is the story of two marriages set over 50 years. With the book opening in 2004, that naturally requires some speculation about the future — in this case, the future of “a rapidly warming Montana.” As The Indypendent writes in an early review, “The looming climate crisis — declining snowfall, depleted wildlife, raging seasonal wildfires, and abnormally warm temperatures — is writ large in the book, forming a blistering backdrop, highlighting newfound restrictions on what both residents and short-term visitors can now see and do in the area.” The novel has earned praise from Pulitzer Prize-winner Adam Johnson, who called it “a masterpiece,” as well as author Lynn Steger Strong, who has a climate book of her own on the list below.Preorder it here.
Four years ago, Argentinean author Agustina Bazterrica burst onto Americans’ radars with the English-language translation of her 2017 novelTender Is the Flesh, a book that imagines a future in which animals have become toxic to humans, leading us to resort to industrialized cannibalism. (Critics have described it, vividly, as “splatterpunk.”) This year, Bazterrica turns her attention from factory farming to the climate catastrophe, telling the story of a member of a “Sacred Sisterhood” cloistered in a mysterious convent who is prompted to reflect on her life outside its walls when a new acolyte arrives. Don’t expect Bazterrica to soften her critiques of capitalism here, though it’s not all doom and gloom; early readers have saidThe Unworthy “ends on a light note of hope.”Preorder it here.
Charlotte McConaghy’s follow-up novel to her critically acclaimed 2020 debut, Migrations, is set on a fictional research island, Shearwater, located between Australia and Antarctica. Dominic Salt, the caretaker of the island’s seed vault, has called the refuge home for the past eight years — ever since fleeing Australia’s accelerating natural disasters, hoping to find a safer place to raise his three children. But with rising sea levels now threatening the island, Dominic and his family have just seven weeks left before they plan to move on. Just before their departure, Dominic’s oldest daughter discovers a woman who has shipwrecked on shore, and the tension — and mystery — starts to grow. Wild Dark Shore has earned a starred review from Kirkus, which calls it a “terrific thriller.” Preorder it here.
Climatologist, World Weather Attribution co-founder, and 2024 Trailblazing Women in Climate laureate Friederike Otto does not mince words about who is most impacted by extreme weather — and who needs to be involved in the solutions. “If we leave the issue of climate change to white men, it’ll continue to be treated as a physical problem with technological solutions,” she has said, adding, “The more diverse the people working on it, the closer we get to implementing these solutions and making progress on climate change.” Her new book, Climate Injustice, elaborates on her thesis further, using the stories of real people in the Global South to illustrate how exploitation, sexism, and colonialism have created a crisis with unequal impacts. Preorder it here.
Everyone who works in the climate space is familiar with the question posed in the title of this book. Entomologist Douglas W. Tallamy is one of the leading proponents of the native gardens movement, and in How Can I Help?, he answers a query implied in his own earlier book, 2009’s Bringing Nature Home: that “unless we restore native plants to our suburban ecosystems, the future of biodiversity in the United States is dim.” How Can I Help? is structured to address some of the most common questions Tallamy encounters during his lectures about how individuals can become directors of their own miniature national parks at home. Despite the daunting challenge of biodiversity loss, Tallamy offers actionable ideas for helping the planet, with conservation beginning in your backyard.Preorder it here.
If I had to make one prediction for 2025, it’d be that we will hear a lot more about per- and polyfluoroalkyl substances — that is, the “forever chemicals” commonly known as PFAS. The chemicals are found in everything from our dental floss to our clothes, but perhaps most disturbingly, they’re also found in our drinking water. In Poisoning the Well, The Hill staff writers Sharon Udasin and Rachel Frazin follow how PFAS got into our environment in the first place — a story of corporate greed and cover-ups that will be familiar to anyone aware of the fossil fuel playbook. Preorder it here.
Journalist Malcolm Harris’ last book was an “encyclopedic,” 700-page history of the city of Palo Alto, which became a fixture of best-of-the-year lists after it came out last February. Hot on its heels is Harris’ follow-up, What’s Left (which slow readers will be relieved to hear is less of a time commitment, at 320 pages). Harris’ intention with his new work is to explore “our remaining options for saving the world,” all of which involve varying degrees of collective action but which escalate from “progressive” to “socialist” to “revolutionary.” It’s one that you can be sure will have people talking. Preorder it here.
Alan Weisman’s hugely successful 2007 book, The World Without Us, speculated about humanity’s legacy if we suddenly disappeared. (Slate named it in 2019 as one of the 50 best nonfiction books in the past quarter-century.) Now, Weisman turns his attention to helping us stick around. “I am working on a book with kind of a vast topic, which is what are humanity’s best and most realistic hopes for getting through this very difficult century that we have,” he told Bangladesh’s Business Standard in 2022, while visiting the country during the research stage of his new project, Hope Dies Last. Weisman’s book took him all over the world — including the Korean de-militarized zone, the Netherlands, and the Marshall Islands — as he looked to speak with people across disciplines and professions about how we can approach our future. Bill McKibben has described the result as “a nonfiction companion to Kim Stanley Robinson’s Ministry for the Future.”Preorder it here.
In 1999, 24-year-old environmentalist Terence Unity Freitas traveled to Colombia to support the Indigenous U’wa people in resisting Occidental Petroleum, which was interested in drilling to extract some 1.5 billion barrels of oil from beneath the cloud forest. During what was supposed to be a weeklong visit, Freitas was kidnapped by the Armed Revolutionary Forces of Colombia (better known as FARC) along with two other Americans; their bodies were later found, bound and shot, just over the border in Venezuela. Twenty years later, Abby Reyes — the author of this memoir and Freitas’ partner at the time of his death — was recognized as a victim in Colombia’s truth and reconciliation process, resurfacing old griefs, reflections, and questions. “I bring the reader along in my demand for truth before the tribunal while awakening our collective awareness of what the truth demands of all of us in this era of ecological collapse and social transformation,” Reyes has said of her book.Preorder it here.
In Susanna Kwan’s debut novel, Awake in the Floating City, San Francisco is almost entirely underwater. Years of Biblical rain mean most people have already evacuated, but Bo — who lost her mother to the waters — lingers long past when sensible people have fled. Then one day, she receives a note from her neighbor, Mia, a 130-year-old woman who doesn’t want to leave the city, either; together, the two become the last people left in San Francisco. “What post-apocalyptic vision dares be so gorgeous?” marvels the author Meng Jin in one of the book’s early blurbs. Preorder it here.
Identical twin sister arborists teach the Women’s Tree Climbing Workshop. While that sounds like the beginning of a fairy tale, it’s the delightfully real-life starting point of journalist Marguerite Holloway’s Take to the Trees. “I was there to be in trees and to better understand them,” she writes of her attendance at the climbing workshop. “Trees and forests are facing existential threats because of climate change, but it can be a struggle to grasp the extent of the danger.” While not all of us have the time, ability, or inclination to take to such “gut-lurching” heights to learn more, we can read Take to the Trees, which records Holloway’s experience overcoming her fears and learning to appreciate the threat to American forests. Preorder it here.
Natural history is one of my favorite genres, and I’m especially excited for Sea of Grass by Minnesota Star Tribute journalists Dave Hage and Josephine Marcotty about one of the more neglected ecosystems of the genre: the American prairie. The grassland, which makes up a vast swath of the inner United States, is an incredible self-sustaining marvel — and nearly as biodiverse as a tropical rainforest. Yet many people today still either share European settlers’ disinterested view of the landscape or adopt a purely utilitarian one — which is why, after 200 years of plows, drainages, and nitrogen fertilizers, the effects have been “catastrophic.” Still, plenty of people who live on the prairie understand the importance of protecting such a special ecosystem, and Hage and Marcotty follow the effort to work alongside the land, not just against it. Sea of Grass earned a coveted blurb from McKibben, in which he calls the book “well worth the read.” Preorder it here.
We’ve been attempting to predict the weather for as long as humans have existed. Satellites, radars, and computers helped us make a significant leap forward from the days of farmer’s almanacs, but advances in artificial intelligence, drones, and the proliferation of home weather stations have created previously unimaginable opportunities for accuracy. (It’s a tech frontier we’ve covered quite a bit here at Heatmap, as well). In his book, Journalist Thomas E. Weber dives into the wild — and wildly important — world of forecasting, which will hit shelves just in time for hurricane season.Preorder it here.
Climate scientist and Shift Key guest Kate Marvel structured her highly anticipated first book around nine different emotional lenses for looking at climate change. That might seem like an odd angle for a scientist, since researchers are specifically taught not to bring emotion into their work. Still, she contends that just as there is no one way to feel about climate change, there is no one emotion we can tap to guide our response to it, either. From hope to pride to love, Marvel urges readers to get deep into their feels in Human Nature, which also touches on “Greek mythology,” “witches,” “geophysical fluid dynamics,” and “romantic comedies” — though according to Marvel, you won’t find “despair” in its pages. A 120,000-copy initial print run suggests the publisher, Ecco, believes this one will be a hit. Preorder it here.
Addressing climate change will require us to address how we eat, which accounts for a third of our carbon emissions. How to ameliorate that is one of the most significant questions we’re currently staring down as a species — and the topic of journalist and Heatmap contributor Michael Grunwald’s next book. Though the answers he finds might not always fit into our comfortable narratives — Grunwald recently ruffled feathers with a related piece for The New York Times defending industrial agriculture’s high yields on small parcels of land as our “best hope” — We Are Eating the Earth seems certain to reshape how its readers think about food, policy, and our thrice-daily consumptions.I can’t wait to be challenged by it. Preorder it here.
Science journalist Peter Brannen’s last book was about the five times life on our planet almost ended in mass extinctions. His follow-up, The Story of CO2 Is the Story of Everything, will zero in on the collection of molecules that have allowed life to exist in the first place. Of course, the great irony of carbon dioxide is that while it has made our planet habitable, fluctuations in its presence in the atmosphere are also responsible for things like almost killing our ancestors all off in an event known as the Great Dying — and now, of course, we have put our thumb on that scale. By looking backward, often by many millions of years, Brennen gives us a glimpse of our future. You’ll definitely want to preorder this book, if only because it will look great on the shelf next to Brennen’s other Eric Nyquist-designed cover.Preorder it here.
The Edge of Water, by Olufunke Grace Bankole (Feb. 4), a novel about a Nigerian immigrant to New Orleans whose destiny is shaped by a hurricane; Ends of the Earth Journeys to the Polar Regions in Search of Life, the Cosmos, and Our Future, by Neil Shubin (Feb. 4), about what we can learn about life and our future from our world’s most extreme landscapes; Dimming the Sun: The Urgent Case for Geoengineering, by Thomas Ramge (March 4), which makes the case for solar geoengineering to turn down the heat on a warming planet; Bad Nature, by Ariel Courage (April 1), an ecological disaster road-trip novel with a patricide plot; Shelter and Storm: At Home in the Driftless, by Tamara Dean (April 8), a memoir about living through the era of climate uncertainty; The Float Test, by Lynn Steger Strong (April 8), a family drama set against the backdrop of a sweltering Florida summer; Atomic Dreams: The New Nuclear Evangelists and the Fight for the Future of Energy, by Rebecca Tuhus-Dubrow (April 8), about the political reversal over nuclear’s place in the energy transition; Phytopolis: The Living City, by Stefano Mancuso (April 22), about how we can adapt our cities, greenly, to the challenges of the future; Carbon: The Book of Life, by Paul Hawken (March 18), about the element both responsible for life and perhaps the biggest threat against it; A Year of Compassion: 52 Weeks of Living Zero-Waste, Plant-Based, and Cruelty-Free, by Colleen Patrick-Goudreau (March 25), about how to protect the planet with small acts of kindness from home; The Lost Trees of Willow Avenue: A Story of Climate and Hope on One American Street, by Mike Tidwell (March 25), a chronicle of record year for climate change as seen on a single Washington, D.C., block; Ocean: Earth’s Last Wilderness, by David Attenborough and Colin Butfield (May 6), the story of one of the planet’s most critical features, co-authored by one of its most beloved natural historians; Arctic Passages: Ice, Exploration, and the Battle for Power at the Top of the World, by Kieran Mulvaney (May 13), about what the age of Arctic exploration can reveal to us about the future of the pole; Hot Takes: Every Journalist’s Guide to Covering Climate Change, by Sadie Babits (June 2), a handbook for incorporating climate science into your reporting.
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On a new report from the Energy Institute, high-stakes legislating, and accelerating nuclear development
Current conditions: Monsoon rains hit the southwestern U.S., with flash floods in Roswell, New Mexico, and flooding in El Paso, Texas • The Forsyth Fire in Utah has spread to 9,000 acres and is only 5% contained • While temperatures are falling into the low 80s in much of the Northeast, a high of 96 degrees Fahrenheit is forecast for Washington, D.C., where Republicans in the Senate seek to finish their work on the “One Big, Beautiful Bill.”
The world used more of just about every kind of energy source in 2024, including coal, oil, gas, renewables, hydro, and nuclear, according to the annual Statistical Review of World Energy, released by the Energy Institute. Here are some of the key numbers from the report:
You can read the full report here.
Virginia Republican Jen Kiggans is a vice chair of the Conservative Climate Caucus and a signatory of several letters supporting the preservation of clean energy tax credits in the Inflation Reduction Act, including one letter she co-authored with Pennsylvania’s Brian Fitzpatrick criticizing the House reconciliation bill’s rough approach to slashing the credits. On Wednesday, however, she said on X that the Senate language “responsibly phases out certain tax credits while preserving American investment and innovation in our energy sector.”
The Senate is still pushing to have the reconciliation bill on President Trump’s desk by July 4, and is expected to work through the weekend to get it done. But as Sahil Kapur of NBC News reported Wednesday, House and Senate leaders have been attempting to hash out yet another version of the bill that could pass both chambers quickly, meaning the legislation is still very much in flux.
Shell is in early talks to acquire fellow multinational oil giant BP, the Wall Street Journal reported. While BP declined to comment to the Journal, Shell called the story “market speculation” and said that “no talks are taking place.”
BP is currently valued at $80 billion, which would make a potential tie-up the largest corporate oil deal since the Exxon Mobil merger, according to the Journal.
Both Shell and BP have walked back from commitments to and investments in decarbonization and green energy in recent months. BP said in September of last year that it would divest from its U.S. wind business, while Shell said in January that it would “pause” its investment in the U.S. offshore wind industry and took an accompanying charge of $1 billion.
The combined company would be better positioned to compete with supermajors like Exxon, which is now worth over $450 billion, while Shell and BP have a combined valuation around $285 billion.
The shuttered Three Mile Island in October. Chip Somodevilla/Getty Images
Three Mile Island Unit 1 will restart a year early, its owner Constellation said Wednesday. When Constellation and Microsoft announced the plan to restart the nuclear facility last fall they gave a target date of 2028. More recently, however, PJM Interconnection, the interstate electricity market that includes Pennsylvania, approved a request made from the state’s governor, Josh Shapiro, to fast-track the plant’s interconnection, the company said, meaning it could open as soon as 2027.
Constellation reported “significant progress” on hiring and training new workers, with around 400 workers either hired or due to start new jobs soon. “We’re on track to make history ahead of schedule, helping America achieve energy independence, supercharge economic growth, and win the global AI race,” Constellation’s chief executive Joe Dominguez said.
The Chinese electric carmarker BYD is addressing rising inventory and lower prices by cutting back its production plans. The company “has slowed its production and expansion pace in recent months by reducing shifts at some factories in China and delaying plans to add new production lines,” Reuters reported.
The slowdown comes “as it grapples with rising inventory even after offering deep price cuts in China's cutthroat auto market,” according to the Reuters report.
In 2024, BYD beat out Tesla in annual sales, with over 4 million cars sold, for a total annual revenue over $100 billion. Tesla’s revenue was just short of $100 billion last year.
While BYD’s factories may be slowing down, it is still looking to expand, especially overseas. In April, more than 7,000 BYD battery electric cars were registered in Europe, according to Bloomberg. This more-than-doubling since last year slingshotted BYD past Tesla on the continent, where its sales have fallen by almost 50%.
“Where does the power sector go from here?” an audience member asked at our exclusive Heatmap subscriber event in New York on Wednesday, referring to a potential future without the Inflation Reduction Act. “Higher costs,” Emily Pontecorvo answered. There is one potential bright spot, however, as Robinson Meyer explained: “If I were a Democrat considering running an affordability campaign or a cost-of-living campaign in ’26 or ’28, there’s lots of openings to talk about clean energy — the policy that’s happening right now — utility rates, and energy affordability.”
The science is still out — but some of the industry’s key players are moving ahead regardless.
The ocean is by far the world’s largest carbon sink, capturing about 30% of human-caused CO2 emissions and about 90% of the excess heat energy from said emissions. For about as long as scientists have known these numbers, there’s been intrigue around engineering the ocean to absorb even more. And more recently, a few startups have gotten closer to making this a reality.
Last week, one of them got a vote of confidence from leading carbon removal registry Isometric, which for the first time validated “ocean alkalinity enhancement” credits sold by the startup Planetary — 625.6 to be exact, representing 625.6 metric tons of carbon removed. No other registry has issued credits for this type of carbon removal.
When the ocean absorbs carbon, the CO2 in the air reacts with the water to form carbonic acid, which quickly breaks down into hydrogen ions and bicarbonate. The excess hydrogen increases the acidity of the ocean, changing its chemistry to make it less effective at absorbing CO2, like a sponge that’s already damp. As levels of atmospheric CO2 increase, the ocean is getting more acidic overall, threatening marine ecosystems.
Planetary is working to make the ocean less acidic, so that it can take in more carbon. At its pilot plant in Nova Scotia, the company adds alkalizing magnesium hydroxide to wastewater after it’s been used to cool a coastal power plant and before it’s discharged back into the ocean. When the alkaline substance (which, if you remember your high school chemistry, is also known as a base) dissolves in the water, it releases hydroxide ions, which combine with and neutralize hydrogen ions. This in turn reduces local acidity and raises the ocean’s pH, thus increasing its capacity to absorb more carbon dioxide. That CO2 is then stored as a stable bicarbonate for thousands of years.
“The ocean has just got such a vast amount of capacity to store carbon within it,” Will Burt, Planetary’s vice president of science and product, told me. Because ocean alkalinity enhancement mimics a natural process, there are fewer ecosystem concerns than with some other means of ocean-based carbon removal, such as stimulating algae blooms. And unlike biomass or soil-related carbon removal methods, it has a very minimal land footprint. For this reason, Burt told me “the massiveness of the ocean is going to be the key to climate relevance” for the carbon dioxide removal industry as a whole.
But that’s no guarantee. As with any open system where carbon can flow in and out, how much carbon the ocean actually absorbs is tricky to measure and verify. The best oceanography models we have still don’t always align with observational data.
Given this, is it too soon for Planetary to issue credits? It’s just not possible right now for the startup — or anyone in the field — to quantify the exact amount of carbon that this process is removing. And while the company incorporates error bars into its calculations and crediting mechanisms, scientists simply aren’t certain about the degree of uncertainty that remains.
“I think we still have a lot of work to do to actually characterize the uncertainty bars and make ourselves confident that there aren’t unknown unknowns that we are not thinking about,” Freya Chay, a program lead at CarbonPlan, told me. The nonprofit aims to analyze the efficacy of various carbon removal pathways, and has worked with Planetary to evaluate and inform its approach to ocean alkalinity enhancement.
Planetary’s process for measurement and verification employs a combination of near field observational data and extensive ocean modeling to estimate the rate, efficiency, and permanence of carbon uptake. Close to the point where it releases the magnesium hydroxide, the company uses autonomous sensors at and below the ocean’s surface to measure pH and other variables. This real-time data then feeds into ocean models intended to simulate large-scale processes such as how alkalinity disperses and dissolves, the dynamics of CO2 absorption, and ultimately how much carbon is locked away for the long-term.
But though Planetary’s models are peer-reviewed and best in class, they have their limits. One of the largest remaining unknowns is how natural changes in ocean alkalinity feed into the whole equation — that is, it’s possible that artificially alkalizing the ocean could prevent the uptake of naturally occurring bases. If this is happening at scale, it would call into question the “enhancement” part of alkalinity enhancement.
There’s also the issue of regional and seasonal variability in the efficiency of CO2 uptake, which makes it difficult to put any hard numbers to the efficacy of this solution overall. To this end, CarbonPlan has worked with the marine carbon removal research organization [C]Worthy to develop an interactive tool that allows companies to explore how alkalinity moves through the ocean and removes carbon in various regions over time.
As Chay explained, though, not all the models agree on just how much carbon is removed by a given base in a given location at a given time. “You can characterize how different the models are from each other, but then you also have to figure out which ones best represent the real world,” she told me. “And I think we have a lot of work to do on that front.”
From Chay’s perspective, whether or not Planetary is “ready” to start selling carbon removal credits largely depends on the claims that its buyers are trying to make. One way to think about it, she told me, is to imagine how these credits would stand up in a hypothetical compliance carbon market, in which a polluter could buy a certain amount of ocean alkalinity credits that would then allow them to release an equivalent amount of emissions under a legally mandated cap.
“When I think about that, I have a very clear instinctual reaction, which is, No, we are far from ready,”Chay told me.
Of course, we don’t live in a world with a compliance carbon market, and most of Planetary’s customers thus far — Stripe, Shopify, and the larger carbon removal coalition, Frontier, that they’re members of — have refrained from making concrete claims about how their voluntary carbon removal purchases impact broader emissions goals. But another customer, British Airways, does appear to tout its purchases from Planetary and others as one of many pathways it’s pursuing to reach net zero. Much like the carbon market itself, such claims are not formally regulated.
All of this, Chay told me, makes trying to discern the most responsible way to support nascent solutions all the more “squishy.”
Matt Long, CEO and co-founder of [C]Worthy, told me that he thinks it’s both appropriate and important to start issuing credits for ocean alkalinity enhancement — while also acknowledging that “we have robust reason to believe that we can do a lot better” when it comes to assessing these removals.
For the time being, he calls Planetary’s approach to measurement “largely credible.”
“What we need to adopt is a permissive stance towards uncertainty in the early days, such that the industry can get off the ground and we can leverage commercial pilot deployments, like the one that Planetary has engaged in, as opportunities to advance the science and practice of removal quantification,” Long told me.
Indeed, for these early-stage removal technologies there are virtually no other viable paths to market beyond selling credits on the voluntary market. This, of course, is the very raison d’etre of the Frontier coalition, which was formed to help emerging CO2 removal technologies by pre-purchasing significant quantities of carbon removal. Today’s investors are banking on the hope that one day, the federal government will establish a domestic compliance market that allows companies to offset emissions by purchasing removal credits. But until then, there’s not really a pool of buyers willing to fund no-strings-attached CO2 removal.
Isometric — an early-stage startup itself — says its goal is to restore trust in the voluntary carbon market, which has a history of issuing bogus offset credits. By contrast, Isometric only issues “carbon removal” credits, which — unlike offsets — are intended to represent a permanent drawdown of CO2 from the atmosphere, which the company defines as 1,000 years or longer. Isometric’s credits also must align with the registry’s peer-reviewed carbon removal protocols, though these are often written in collaboration with startups such as Planetary that are looking to get their methodologies approved.
The initial carbon removal methods that Isometric dove into — bio-oil geological storage, biomass geological storage, direct air capture — are very measurable. But Isometric has since branched beyond the easy wins to develop protocols for potentially less permanent and more difficult to quantify carbon removal methods, including enhanced weathering, biochar production, and reforestation.
Thus, the core tension remains. Because while Isometric’s website boasts that corporations can “be confident every credit is a guaranteed tonne of carbon removal,” the way researchers like Chay and Long talk about Planetary makes it sound much more like a promising science project that’s being refined and iterated upon in the public sphere.
For his part, Burt told me he knows that Planetary’s current methodologies have room for improvement, and that being transparent about that is what will ultimately move the company forward. “I am constantly talking to oceanography forums about, Here’s how we’re doing it. We know it’s not perfect. How do we improve it?” he said.
While Planetary wouldn’t reveal its current price per ton of CO2 removed, the company told me in an emailed statement that it expects its approach “to ultimately be the lowest-cost form” of carbon removal. Burt said that today, the majority of a credit’s cost — and its embedded emissions — comes from transporting bases from the company’s current source in Spain to its pilot project in Nova Scotia. In the future, the startup plans to mitigate this by co-locating its projects and alkalinity sources, and by clustering project sites in the same area.
“You could probably have another one of these sites 2 kilometers down the coast,” he told me, referring to the Nova Scotia project. “You could do another 100,000 tonnes there, and that would not be too much for the system, because the ocean is very quickly diluted.”
The company has a long way to go before reaching that type of scale though. From the latter half of last year until now, Planetary has released about 1,100 metric tons of material into the ocean, which it says will lead to about 1,000 metric tons of carbon removal.
But as I was reminded by everyone, we’re still in the first inning of the ocean alkalinity enhancement era. For its part, [C]Worthy is now working to create the data and modeling infrastructure that startups such as Planetary will one day use to more precisely quantify their carbon removal benefits.
“We do not have the system in place that we will have. But as a community, we have to recognize the requirement for carbon removal is very large, and that the implication is that we need to be building this industry now,” Long told me.
In other words: Ready or not, here we come.
On mercury rising, climate finance, and aviation emissions
Current conditions: Tropical Storm Andrea has become the first named Atlantic storm of 2025 • Hundreds of thousands are fleeing their homes in southwest China as heavy rains cause rivers to overflow • It’s hot and humid in New York’s Long Island City neighborhood, where last night New York City mayoral candidate Zohran Mamdani delivered his victory speech after defeating former governor and longtime party power broker Andrew Cuomo in the race’s Democratic primary.
The brutal heat dome baking the eastern half of the United States continues today. Cooler weather is in the forecast for tomorrow, but this heat wave has broken a slew of temperature records across multiple states this week:
In Washington, D.C., rail temperatures reached a blistering 135 degrees, forcing the city’s Metro to slow down train service. Meanwhile, in New Jersey, the heat sickened more than 150 people attending a high school graduation ceremony. As power demand surged, the Department of Energy issued an energy emergency in the Southeast to “help mitigate the risk of blackouts.”
As Heatmap’s Matthew Zeitlin pointed out on Tuesday, in terms of what is on the grid and what is demanded of it, this may be the easiest summer for a long time. “Demands on the grid are growing at the same time the resources powering it are changing,” Zeitlin writes. “Electricity load growth is forecast to grow several percent a year through at least the end of the decade. At the same time, aging plants reliant on oil, gas, and coal are being retired (although planned retirements are slowing down), while new resources, largely solar and batteries, are often stuck in long interconnection queues — and, when they do come online, offer unique challenges to grid operators when demand is high.”
A group of 21 Democrat-led states including New Jersey, Massachusetts, New York, Arizona, and California, is suing the Trump administration for cutting billions of dollars in federal funding, including grants related to climate change initiatives. The lawsuit says federal agencies have been “unlawfully invoking a single subclause” to cancel grants that the administration deems no longer align with its priorities. The clause in question states that federal agencies can terminate grants “pursuant to the terms and conditions of the federal award, including, to the extent authorized by law, if an award no longer effectuates the program goals or agency priorities.” The states accuse the administration of leaning on this clause for “virtually unfettered authority to withhold federal funding any time they no longer wish to support the programs for which Congress has appropriated funding.”
The rollback has gutted projects across states and nonprofits that support diversity, equity, and inclusion, as well as climate change preparation programs and research. The states say the clause is being used unlawfully, and hope a judge agrees. “These cuts are simply illegal,” said New York Attorney General Letitia James. “Congress has the power of the purse, and the president cannot cut billions of dollars of essential resources simply because he doesn’t like the programs being funded.”
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A brief update from the Bonn Climate Change Conference in Germany: A group of 44 “Least Developed Countries” have called for rich countries to triple the financing goal for climate change adaptation by 2030 compared to 2022 levels. The current target sits at $40 billion a year by 2025, a number set back in 2021 at COP26. According toClimate Home News, tripling the financing goal on 2022 levels would bring in a little less than $100 billion annually. That’s far short of the $160 billion to $340 billion that the United Nations estimates will be needed by 2030. The Indian Express also reports that developing countries have “managed to force a reopening of discussions on the obligations of developed nations to ‘provide’ finance, and not just make efforts towards ‘mobilising’ financial resources, for climate action.” The issue will also be discussed at COP30 in Brazil later this year. The Bonn conference has been running since June 16 and ends tomorrow.
In the UK, aviation is now a bigger source of greenhouse gas emissions than the power sector, according to a new report from the Climate Change Committee. The independent climate advisors say that demand for leisure travel is boosting demand for international flights, and “continued emissions growth in this sector could put future targets at risk.” Meanwhile, the UK power sector has been rapidly decarbonizing, and is now the sixth largest source of emissions. (In the U.S., electricity production is the second-largest source of emissions, behind transportation.) The report also found that heat pump installations increased by 56% in 2024, and that nearly 20% of new vehicles sold were electric. UK emissions were down 50% last year compared to 1990.
The committee applauded the progress but urged more action from the government to cut electricity prices to help speed up the transition to clean technologies. “Our country is among a leading group of economies demonstrating a commitment to decarbonise society,” said Piers Forster, interim chair of the committee. “This is to be celebrated: delivering deep emissions reduction is the only way to slow global warming.”
Voters in North Carolina want Congress to leave the Inflation Reduction Act well enough alone, a new poll from Data for Progress finds. The survey, which asked North Carolina voters specifically about the clean energy and climate provisions in the bill, presented respondents with a choice between two statements: “The IRA should be repealed by Congress” and “The IRA should be kept in place by Congress.” (“Don’t know” was also an option.) The responses from voters broke down predictably along party lines, with 71% of Democrats preferring to keep the IRA in place compared to just 31% of Republicans, with half of independent voters in favor of keeping the climate law. Overall, half of North Carolina voters surveyed wanted the IRA to stick around, compared to 37% who’d rather see it go — a significant spread for a state that, prior to the passage of the climate law, was home to little in the way of clean energy development.
North Carolina now has a lot to lose with the potential repeal of the Inflation Reduction Act, as Heatmap’s Emily Pontecorvo has pointed out. The IRA brought more than 17,000 jobs to the state, along with $20 billion in investment spread out over 34 clean energy projects. Electric vehicle and charging manufacturers in particular have flocked to the state, with Toyota investing $13.9 billion in its Liberty EV battery manufacturing facility, which opened this past April.
As a fragile ceasefire between Israel and Iran takes hold, oil prices are now lower than they were before the conflict began on June 13.