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An interview with science writer Melissa L. Sevigny about Brave the Wild River: The Untold Story of Two Women Who Mapped the Botany of the Grand Canyon

In late June 1938, three small boats pushed off from the banks of Green River, Utah, with plans to run the raging Colorado River through the Grand Canyon, all the way to Lake Mead. In addition to Grape Nuts, a bottle of Four Roses whiskey, and the latest USGS survey maps tied up with a “lucky string,” the boats carried something rather unusual on board: women.
At the time that Elzada Clover and her assistant, Lois Jotter, set out to become the first botanists to catalog the Grand Canyon, rumors still swirled that prehistoric creatures might lurk in its labyrinthine side canyons. Only 12 non-native expeditions had made the trip down the Colorado River since John Wesley Powell’s inaugural 1869 trip, and almost all of those rafters were men (the only woman to have attempted the journey vanished without a trace, along with her husband).
Though Clover and Jotter had serious work ahead of them, the contemporary coverage focused almost exclusively on the fact that the pair were women. Clover and Jotter weren’t much better respected by the men accompanying them; in addition to their significant scientific duties, they served as cooks for the crew on the entire 43-day journey. Even in spite of the distractions, though, Clover and Jotter’s catalog of over 400 species, including four previously unknown cactus species, remains the botanical ur-text of the region: “There was simply no other comprehensive plant list [of the Grand Canyon] published prior to the closure of Glen Canyon Dam,” explains science writer Melissa L. Sevigny’s Brave the Wild River: The Untold Story of Two Women Who Mapped the Botany of the Grand Canyon, an excellent new book about the river expedition. “Anyone who wanted to understand how the vegetation had changed — because of dams, exotic species, or any of the other human and natural influences at work on ecosystems in the past half-century — had to refer to Clover and Jotter’s work.”
Sevigny aimed to do Clover and Jotter justice by restoring them to their rightful place in science — and remembered history. But her book is also a rollicking, keep-you-up-at-night adventure story, told in utterly enveloping and immediate prose. Happily, Sevigny is earning her accolades; the book has received a rare triple-crown of early starred reviews from Publishers Weekly, Kirkus Reviews, and Booklist.
Brave the Wild River is out on May 23. Ahead of its publication, I had the chance to speak with Sevigny about Clover and Jotter, her writing process, and the continued uphill battle of women in the sciences today. Our conversation has been edited and condensed for clarity.
It was the fact that they were female scientists that drew me in. I always wanted to be a scientist; I wanted to be a geologist when I was a kid. I stayed on that path for quite a while and then I became a writer. I feel myself drawn to those stories because I suspect they might have changed things for me if I had known more stories about women in science when I was on that path.
I was surprised that I had never heard of these two women before, Elzada Clover and Lois Jotter. I’ve lived in Arizona all my life. I thought I knew a lot about its history, and yet somehow their names had never come up. Something about that really compelled me and the more I looked, the more I realized I couldn’t find what I was looking for, which was the story of the botanical work that they did. If I wanted to know that story, I was going to have to write it myself.
I was lucky enough right from the start to have the diaries of both of these women. A diary is such an immersive document, you really do feel like you’re in their heads. They’re writing things down that maybe they wouldn’t say out loud to anyone. And so I got to know them first through their diaries, which were wonderfully descriptive, and through letters, which are another really intimate form of communication. They had friends and family that they were very close with and that they would write these letters to on the trip. Whenever they could stop and post a letter, they would do that.
But I also had to do some other things to get into their heads and one of them was raft the Grand Canyon myself. I was incredibly nervous. I’d never done a whitewater rafting trip before. But I knew I was going to need to do that.
I went with a botany crew; we were tasked with weeding out an invasive species of grass. I wanted to do that so I could get a sense of what it was like to actually have to work as a botanist on the river. It was a small group: We had three boats and six people, just like they did. Of course, a lot of things have changed since 1938 about river rafting, but it did feel like a very immersive experience. I remember at one point, turning around to watch the boat behind me come through a rapid and I thought, ‘Oh, there’s Lorin Bell.’ That is a character from 1938 in my book; it was not, in fact, Lorin Bell. Time, it feels different down at the bottom of the Grand Canyon. And sometimes I did forget that it wasn’t 1938.
I’m grateful to them for having the foresight to keep the materials because while they were alive, people often told them — or gave them the impression — that what they did wasn’t that important. And if they had listened to those people, they wouldn’t have kept these materials. The fact that they saved their diaries, they saved their letters, they saved the newspaper clippings, and they donated them to these archives shows a lot of foresight and a lot of courage. I couldn’t have written this book if they hadn’t felt that way.
I did keep my own diary. I made sure I wrote in it every night. I also had a waterproof river map with me and I made notes on it before the trip of things I wanted to make sure I looked at. Because there would be a moment in the diaries where they would say, like, “We looked up and we saw the Desert View watchtower.” That would be the whole description. And so I knew, okay, stop and look up here so that you can describe what they were seeing.
When I got home, I typed up little bits of description out of my diary and I printed them out and I cut them up with scissors and then I actually would tape them into my draft and work at integrating them in.
That’s a direct quote from something that Lois Jotter said. I found out pretty quickly that both these women wanted to be remembered as botanists and they struggled because people wanted to talk about them as if they were the first women to succeed at rafting the Grand Canyon. Elzada Clover actually pushed back against that for a very specific reason: She would refer to herself as the first non-native woman to raft the Grand Canyon. She knew that the region had a long Indigenous history — Navajo and Hopi both have stories of running this river long before a white person came along and did it. Elzada knew that and so that was one reason she pushed back against that label.
But the second reason was that she did want to be remembered as a scientist, as a botanist, and I don’t think that really happened for her during her lifetime. But it’s difficult to center a story on science when the fact that they were women shaped so much of their experience. When I first dove into writing this book, I wanted to stay on the science and I really thought the sexism that they experienced would be a smaller thread — I thought it would be there, but I didn’t want it to center it. But as I was writing, it was impossible to ignore all of the obstacles they faced because they were women, so I hope I managed to strike the right balance and do justice to their story. It was a frustration for them when they were alive and it was a difficulty for me when I was writing, like “How can we tell this as a science story when they’re constantly being told that they shouldn’t be scientists?”
I think that’s absolutely right. And I’m glad you said you were shocked by that because I was fairly shocked too, and then I was embarrassed for being shocked. I expected going into it — this is embarrassing to admit — I really expected the sexism would almost be kind of funny, you know, it would be like, “Look at how those people acted in the 1930s!” And it is funny, but it’s a much darker humor than I expected because women are still facing all of these things today.
Maybe not to the same degree — it might be a little more hidden or subtle now — but all of the same things that [Clover and Jotter] experienced: struggle getting a job, struggle getting a promotion, struggle to be taken seriously, to have a seat at the table. Smaller things too, like people fixating on their physical appearance, telling them to smile. All of those things still happen to women today. I wasn’t expecting to write as much about that going into this book as I did, but I knew I had to because it was a very real part of their story and an extremely relevant part of their story.
It’s become only more relevant as time goes on. Clover and Jotter were the only people to make a formal plant list published in a Western scientific journal before Glen Canyon Dam went up. Today, there’s been a shift in thinking about the Colorado River. In their era, it was a given that people were going to build dams and they were going to harness this river. But today, a lot of people want to figure out how we can undo some of that damage, how we can protect the rivers, cultural values, and environmental values. And in that discussion, it’s hard to know how to do that if you don’t know what the river used to look like.
Clover and Jotter’s plant lists are just one part of that story. There’s also Indigenous wisdom about the plants along the river. There are other pre-dam records, but together it creates a picture of how this place used to look. Not saying that we can make it look like that again, but it gives us a way to pin our baselines in place so as we move forward, we can understand what kind of processes we need to restore this river. How do we want to protect it?
Yeah, so many things. Gosh. I was lucky to be able to track down some of their relatives and some of their former students and had really wonderful interviews with them. But there’s always questions, like, did you get it quite right?
There’s a key moment in the book where [Clover and Jotter] lose part of their plant collection and all I have are these little scraps and I don’t know exactly how that happened. Like, what were you planning? Who did you give that collection to, who was entrusted with it, and then what happened? I’d love to fill in those kinds of details.
I’d also like to ask them how they feel about how their botanical work has been used today. So many things changed from the 1930s to the present day and they lived through those changes, but because I don’t have as detailed records later in their life, I don’t know how they felt about what happened to the Colorado River, how they felt about how their work was used or ignored or misused over that time. I would just love to sit and talk with them about that. That’s one of many, many questions I would have.
This was a story about two ordinary women. I mean, I think they were remarkable, I wrote a whole book about them. But sometimes when we tell stories about science, we focus on the lone genius in the laboratory discovering a new element or breaking the laws of physics. Most science actually gets done in a much more incremental fashion. It’s about ordinary people who are passionate about some part of the natural world and they go out and they chase that curiosity and they move our knowledge forward. Just a little step. That’s what [Clover and Jotter] did and I think that’s how science works.
I started this conversation by saying that I wanted to be a scientist, right? I hope that young people or people of any age who are interested in science will see that it’s not something done by geniuses locked away in laboratories. Anybody can be a scientist.
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But this might all be moot thanks to the “major questions doctrine.”
Could President Trump’s expansive interpretation of the International Emergency Economic Powers Act empower a future president to, gasp, tariff carbon intensive goods?
That’s the terrifying prospect Justice Neil Gorsuch, a staunch conservative who often votes in line with Trump and his administration’s positions, raised to Solicitor General D. John Sauer in Wednesday’s oral arguments in the federal court case seeking to throw out Trump’s tariffs.
In a series of questions designed to draw out what limits Sauer thought existed on executive power, Gorsuch asked, “Could the president impose a 50% tariff on gas-powered cars and auto parts to deal with the unusual and extraordinary threat from abroad of climate change?” (This echoed the language of the statute the Solicitor General cited to justify the tariffs.)
“It’s very likely that could be done,” Sauer conceded.
“I think that would have to be the logic of your view,” Gorsuch replied.
“Obviously this administration would say that’s a hoax, this is not a real crisis,” Sauer said.
“I’m sure you would,” Gorsuch said to chuckles.
“But that would be a question for Congress, under our interpretation, not the courts,” Sauer said.
Gorsuch’s questioning touched on the “major questions doctrine,” first propounded in the court’s 2022 opinion in West Virginia v. Environmental Protection Agency. In that case, which resulted in the court striking down the Obama-era Clean Power Plan power plant regulations, the conservative majority argued that “given both separation of powers principles and a practical understanding of legislative intent, the agency must point to ‘clear congressional authorization’ for the authority it claims,” which it claimed the rules lacked.
In a note to clients following the emissions rules case, the white shoe law firm Davis Polk wrote that the majority opinion “does not provide guidance for applying the major questions doctrine in future cases,” but noted that a concurrence authored by Justice Gorsuch “attempted to provide such guidance for future cases.” In said concurrence, Gorsuch wrote that the major questions doctrine could be invoked when the executive branch is dealing with a question of “great political significance” or “a significant portion of the American economy.”
Hmm!
Some progressives flagged this aspect of the tariffs case as it worked its way through the courts, pointing out that it could call into question powers that future presidents may want to use to implement expansive industrial policy, including climate policy. Some of the broader legal arguments against the tariffs, Todd Tucker of the progressive Roosevelt Institute wrote in a brief, “tilt the scales overwhelmingly against progressive priorities.”
“Limits on Trump today will bind future presidents tomorrow. This could include centrists, progressives, MAGA types, or traditional conservatives, who will need or want robust executive tools to address ruinous competitiveness or climate emergencies.”
But in pursuit of their clients’ interests, advocates for striking down the tariffs were more than happy to pick up the thread dropped by Gorsuch to make libertarian-leaning arguments about presidential powers.
“It is simply implausible that in enacting” the International Emergency Economic Powers Act, the law Trump has used to justify his retributive import taxes, “Congress handed the president the power to overhaul the entire tariff system and the American economy in the process, allowing him to set and reset tariffs or any and every product from any and every country at any and all times,” Neal Katyal, the lawyer arguing on behalf of a beer and wine distributor and a longtime figure in Democratic legal circles, said in his oral argument.
Perhaps seeking to appeal to the Republican majority on the court, Katyal returned to Justice Gorsuch’s climate change example, arguing that “if the government wins, another president could declare a ’climate emergency’ and impose huge tariffs without floors or ceilings, as Justice Gorsuch said.”
“My friend’s answer,” Katyal said, referring to Sauer, “is, ‘This administration would declare it a hoax.’ The next president may not quite say that.”
Many legal experts thought that the administration got the worse of the oral arguments and questioning of the attorneys, with conservative Justices Gorsuch and Amy Coney Barrett and Chief Justice John Roberts all asking skeptical questions of Sauer, while Justices Clarence Thomas and Samuel Alito repeatedly threw the White House argumentative lifelines, including, in Alito’s case, suggesting other laws that could justify the tariffs.
Alito even gently mocked Katyal, a Democrat who served as acting solicitor general in the Obama administration, for blatantly using conservative-tinged legal arguments about the scope of executive authority over the economy.
“I wonder if you ever thought that your legacy as a constitutional advocate would be the man who revived the non-delegation argument,” referring to the idea that certain powers are too much akin to lawmaking to delegate to the executive branch, which in theory could vastly restrict the authority of regulators.
But Katyal resisted the implied contradiction and persisted in targeting the right wing of an already conservative Supreme Court.
“Heck yes,” Katyal said. “I think Justice Gorsuch nailed it on the head when saying that when you’re dealing with a statute that is this open-ended — unlike anything we’ve ever seen.”
On Massachusetts’ offshore headwinds, Biden’s gas rules, and Australia’s free power
Current conditions: The Pacific Northwest is getting blasted with winds of up to 70 miles per hour • Heavy snow is coming this week for the higher elevations in New England and upstate New York • San Cristóbal de La Laguna in the Canary Islands saw temperatures surge to 95 degrees Fahrenheit.

Democratic candidates swept to victory in key races with implications for climate change on Tuesday night. In Virginia, Democrat Abigail Spanberger — who vowed to push forward with offshore wind, new nuclear reactors, and fusion energy — seized the governor’s mansion in the first major race to be called after polls closed. In New Jersey, Democrat Mikie Sherrill, who campaigned on building new nuclear plants and pressing the state’s grid operator, PJM Interconnection, to cut electricity prices, trounced her Republican opponent. In New York City, Democrat Zohran Mamdani, who said little about energy during his campaign but came out in the last debate in favor of nuclear power, easily beat back his two rivals for Gracie Mansion. Yet the Georgia Public Service Commission's incumbent Republican Tim Echols lost his race against Democrat Alicia Johnson, a defeat for a conservative who championed construction of the only two nuclear reactors built from scratch in modern U.S. history. In what one expert called a sign of a “seismic shift” on the commission, Peter Hubbard, another Democrat running to flip a seat on the commission, also won.
At a moment when the Trump administration is “disassembling climate policy across the federal government,” Heatmap’s Emily Pontecorvo wrote, “state elections are arguably more important to climate action than ever.”
A federal judge in Washington ruled Tuesday that the Trump administration can reconsider the Biden-era approval of SouthCoast Wind off the coast of Nantucket, Massachusetts. The decision, reported in The New York Times, is a setback for the joint venture between EDP Renewables and Engie, and handed the White House a victory in what we’ve called here the administration’s “total war on wind.” Judge Tanya S. Chutkan of the U.S. District Court for the District of Columbia ruled that the project developers would not “suffer immediate and significant hardship” if the Department of the Interior’s Bureau of Ocean Energy Management were allowed to reevaluate the project’s construction and operation permits.
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Meanwhile, the U.S. Court of Appeals for the D.C. Circuit upheld Biden-era Department of Energy efficiency rules for gas-fired residential furnaces and commercial water heaters in a ruling that rejected the gas industry’s challenge on Tuesday. “Overall, we find that DOE’s economic justification analysis and conclusions were robust,” the panel ruled, according to Bloomberg Law. The decision will maintain the status quo of how the agency enforces energy efficiency rules for the appliances. Under standards updated in 2021 and 2023, the Biden-era bureaucrats proposed raising efficiency levels to 95% for furnaces and using condensing model designs to heat water.
White House budget officials pressed the Environmental Protection Agency to expand its rollback of tailpipe regulations this summer as the agency sought to repeal the foundational policy that undergirds federal climate rules, E&E News reported. Documents the green newswire service obtained showed the White House Office of Management and Budget pushed the environmental regulator to weaken limits on vehicular pollution, including soot and smog-forming compounds in addition to planet-heating carbon. The EPA initially pushed back, but the documents revealed the staffers at OMB demanded the agency pursue a more aggressive rollback.
Australia launched a new plan to force energy companies to offer free electricity to households during the day to use excess solar power and push the grid away from coal and gas. The policy, called the “Solar Sharer” plan, aims to take advantage of the country’s vast rooftop solar panels. More than 4 million of Australia’s 10.9 million households have panels, and the capacity has overtaken the nation’s remaining coal-fired power stations. The proposal, the Financial Times reported, would also extend the benefits of distributed solar resources to the country’s renters and apartment dwellers.
For years, nuclear scientists have dreamed of harnessing atomic energy from thorium, potentially shrinking radioactive waste and reducing the risk of weapons proliferation compared to uranium. In the West, that has remained largely a dream. In China, however, researchers are vaulting ahead. This week, Chinese scientists announced a major breakthrough in converting thorium to uranium in a reactor. “This marks the first time international experimental data has been obtained after thorium was introduced into a molten salt reactor, making it the only operational molten salt reactor in the world to have successfully incorporated thorium fuel,” Shanghai Institute of Applied Physics of the Chinese Academy of Sciences said in a statement.
Rob and Jesse touch base with WeaveGrid CEO Apoorv Bhargava.
Data centers aren’t the only driver of rising power use. The inexorable shift to electric vehicles — which has been slowed, but not stopped, by Donald Trump’s policies — is also pushing up electricity use across the country. That puts a strain on the grid — but EVs could also be a strength.
On this week’s episode of Shift Key, Rob and Jesse talk to Apoorv Bhargava, the CEO and cofounder of WeaveGrid, a startup that helps people charge their vehicles in a way that’s better and cleaner for the grid. They chat about why EV charging remains way too complicated, why it should be more like paying a cellphone bill than filling up at a gas station, and how the AI boom has already changed the utility sector.
Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse Jenkins, a professor of energy systems engineering at Princeton University.
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Here is an excerpt from our conversation:
Robinson Meyer: In your experience, are consumers willing to make this deal, where they get some money off on their power bill in order to change how their car works? Because it does seem to include a mindset change for people, where they’re going from thinking of their car as a machine — I mean, this is part of the broader transition to EVs. But there’s an even further mindset shift that seems to me like it would be required here, where you go from thinking about your car as a machine that you wholly own — that enables your freedom, that is ready to drive a certain amount of miles at any time — to a machine that enables you to have transportation services but also is one instantiation of the great big cloud of services and digital technologies and commodity energy products that surround us at any time.
Apoorv Bhargava: Yeah, I mean, look, I think we have seen faster adoption rates than any other consumer-side resource participating in energy has. So I feel very good about that. But ultimately, I think of this as a transition to the normal experience for folks who are going through what is a new experience altogether.
Again, similar to my cell phone plan, if this was just offered to me as a standard offering — you buy an EV, your utility offers you a plan, it’s called the EV plan — in the same way that we have EV time-of-use rates, quote-unquote. If you’re just offered an EV plan where it’s exactly the same thing — I’m going to make sure you’re fully charged every night in the way you want it to be charged, with the cleanest, cheapest, most reliable charging possible, and it’s just being taken care of.
I think what’s so hard for most folks to grok, is that the way this experience works is it’s supposed to be completely frictionless, right? You’re really supposed to not think about it. It’s actually only in the few moments where you need to change your 99% behavior to the 1% behavior — where you’re like, Oh, I need to go to the airport, or, Oh, I need to go on a road trip. That’s where you need to think about it. It’s flipped from thermostat management programs where you actually need to think about it actively in the moments where the grid is really strained.
Where we’ve overinvested, in my view —and this is a controversial view — we’ve overinvested in trying to make EVs be like gas stations or like the gas station model. We keep talking about it all the time. We’ve over-talked about range anxiety. The fact of the matter is 80% of charging still happens at home. Even in the long run, 30% of charging will happen in the workplace. 50- plus-percent will happen at home. It’s very little charging that’s gonna happen on fast charging. But we’ve talked so much, ad nauseam, about fast charging that we’ve actually forgotten that underpinning the iceberg of the electrification cost is the grid itself. And never before has the grid been so strained.
Mentioned:
Rob on how electricity got so expensive
Utility of the Future: An MIT Energy Initiative response to an industry in transition, December 2016
Previously on Shift Key: Utility Regulation Really Sucks
Jesse’s downshift; Rob’s upshift.
This episode of Shift Key is sponsored by …
Hydrostor is building the future of energy with Advanced Compressed Air Energy Storage. Delivering clean, reliable power with 500-megawatt facilities sited on 100 acres, Hydrostor’s energy storage projects are transforming the grid and creating thousands of American jobs. Learn more at hydrostor.ca.
Uplight is a clean energy technology company that helps energy providers unlock grid capacity by activating energy customers and their connected devices to generate, shift, and save energy. The Uplight Demand Stack — which integrates energy efficiency, electrification, rates, and flexibility programs — improves grid resilience, reduces costs, and accelerates decarbonization for energy providers and their customers. Learn more at uplight.com/heatmap.
Music for Shift Key is by Adam Kromelow.