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Environmentalism Without Degrowth | Podcast Highlights

Blog Post | Energy Production

Environmentalism Without Degrowth | Podcast Highlights

Chelsea Follett interviews Zion Lights about her new book, " Energy is Life: Why Environmentalism Went Nuclear."

Listen to the podcast or read the full transcript here.

Joining me today is Zion Lights, an award-winning science communicator who is known for her vision of a high-energy, low-carbon future. Her latest book is titled Energy is Life: Why Environmentalism Went Nuclear.

Zion, tell me, what inspired this book?

There are a lot of good nuclear energy books out there, but they tend to focus on the technology. That’s good, but people who read technical books tend to already agree that nuclear energy is good. I’m trying to convince people to think differently. So, I’ve written this book as a narrative following my journey as an anti-nuclear environmental activist to where I am now, while also explaining things like waste and accidents. Ultimately, I wanted to write something that would have changed my mind if I had read this book 15 years ago when I was out blocking roads.

We recorded an earlier podcast about your journey. But for people who aren’t familiar, could you just quickly summarize your history as an activist?

I’m what you might call a former radical environmentalist. I was very active in the major groups, like Greenpeace and Friends of the Earth, taking part in protests, organizing protests, and lobbying. I was doing all of that from quite a young age, from my teenage years and even before. And part and parcel of that was being anti-nuclear. I went on anti-nuclear protests and signed anti-nuclear petitions.

Over time—and this is a long story, I won’t get into it, but it’s all in the book—I changed my mind and realized how good this technology actually is for the environment. I decided I need to make amends for my own sake, but also because I believe in having clean air and a better future for my children.

Let’s dive into the book. You argue that “Energy is life.” That’s right in the title. What do you mean by that?

When I was in Extinction Rebellion, one of the things that we pushed for was net zero. This idea was influential everywhere, not just in Britain, where the group was founded. All over the world, people were suddenly setting net-zero goals, even in countries with very little capacity to actually meet them. And I’m not saying that the reasons were wrong. Climate change is an issue, and air pollution is an issue. The problem was that net zero or decarbonization became synonymous with renewable energy. That was a huge mistake. It should have been not just clean energy, but what’s cleaner? Gas is cleaner than coal, so really, it should have been a phasing out coal initiative.

I think the reason why net zero was tied to renewables was that activists were really trying to promote energy scarcity. How do we use less? This is an old idea that was present in environmentalism well before I was born. Less stuff, less consumerism, less energy. Even when I was growing up, I remember campaigns on TV about not leaving your lights on when you leave the room and not wasting your tap water. It was really drummed into us. So, net zero got lumped in with “We need to live with less.”

On various panels, I’ve been asked by people in the audience, “Isn’t there a danger of too much?” I think that’s really interesting. Why would there be a danger of having too much? Then, I started to realize it’s because those people aren’t connecting their everyday life with energy. They never had to live with scarcity.

I wrote the book to challenge a lot of those ideas. I’ve tried to have readers imagine their lives without access to reliable electricity. What’s that life like? And do you really want to live that life? Because millions of people don’t.

My parents’ family in the Punjab in India live in a very poor rural area, although it’s not extreme poverty. They have food. They’re rice farmers. But here’s where the issues come in: they’re dependent on rain. If it doesn’t rain enough, then they don’t eat, and they don’t make any money. It’s so hard to imagine having that kind of lifestyle where you can’t just go to the shop and buy whatever you need.

I had friends who’ve gone to India, and they just go to the tourist sites and say, “Oh, it’s so peaceful, and I love how it’s not materialistic. They don’t have that stress of capitalism.” In reality, they don’t have the privilege. They are just trying to get through the day and make sure everybody’s fed, and nobody dies of a preventable disease. In the village, if you get bitten by a snake or a dog, which is very common, you’ll probably just die. The nearest hospital will be hours away by car, which nobody has. A lot of people have bikes. You think you can get to a hospital on a bicycle carrying a sick child when it takes four hours by car? All this impacts education as well. I remember my parents trying to pay for a teacher to live in the village. They’re very well off compared to most people in India, so they had a building built, thinking they were giving something back to a community, and they couldn’t find a teacher, even after offering a really good salary, who’d be willing to live in a village where they might die of a snakebite.

So they don’t have those privileges that we have, and spreading those privileges will require burning a lot of fossil fuels. It is going to be coal, then gas, to enable access to things like public transport, hospitals, and schools. And then if you have a school, you could have people there who know how to administer antivenom. You’ll have all of those incremental things that we developed over time that come with having access to energy.

So, it’s the people who grew up with abundant energy that protest that same benefit and say, “Well, we’ve had too much.” And I think some of that comes from guilt. But feeling guilty doesn’t help my family in India. You trying to get people to use less is actually detrimental to them because then you have things like COP, where poor countries get pressured to sign agreements to burn less fossil fuels.

Many energy discussions, you point out, focus almost entirely on emissions targets. Why do you think people take that approach, and how can we improve upon that?

For quite a few people, climate change equals the apocalypse, so that is the sole problem they think we should be focused on. They also seem to not pay much attention to human wellbeing. In a way, they think people are part of the problem. And that’s where the scarcity argument comes from, the idea that we need to have less. That kind of self-flagellation might make activists feel less guilty, but it doesn’t really help those who are impacted by climate change.

For me, it’s a bit different. I want the planet to be healthy because I care about people. I want my neighbor to be healthy. I want people to be well-fed and not struggling.

Poverty is one of the many issues where I think we could have moved forward a bit more than we have. We’ve got brilliant thinkers crunching out reports explaining how we can alleviate poverty, and it hasn’t happened because we’re over-focused on environmental targets. I have spoken to people who do this work independently, trying to alleviate poverty, and they have said to me privately, “The climate thing’s just taken over. It’s hard to get funded for anything because all anyone cares about is climate.” I’m not saying climate change is not an issue, I’m just saying it’s not the only issue.

How do you respond to the idea that prosperity must mean restraint and degrowth?

Someone I knew in Extinction Rebellion was going to go and live in this community with some other degrowthers. He’s one of the most well-off people I know. He’s an academic professor, he’s got a country house, he’s got everything that might create a perfect life, but obviously, he didn’t feel like that, otherwise he wouldn’t be saying, “Well, I need to go and live on the land.” It’s almost because he has everything that he wanted that he believes he’s unhappy because of modern society.

It’s almost because he has everything that he wanted that he believes he’s unhappy because of modern society. That’s a very common argument. “Our mental health is bad because of how we live.” I’ve had people say that to me, and I’ve said, “Well, do you think that people living in poverty have good mental health?” Where’s that assumption coming from? You just think that they’re happy every day because they can’t go to a shop and buy whatever they want or have whatever they want to eat for dinner?

When I visited India, I would ask people, “What would you do if you could leave?” When I asked my cousin, she said, “Well, I can’t leave. I’ve got to support my brother, who’s disabled. I’ve got to help my mum cook.” I couldn’t even get her to imagine having these choices. This academic and these Degrowth people would say, “Oh, they’re so selfless.” No, they just don’t have a choice. They don’t have the choice to think about their own needs. They don’t think in terms of choice because poverty takes away their choices. I remember saying to her, “You could be a doctor.” And she just said, “No, I could never. I don’t have the money to do it. I don’t even know how to fill in the forms.” All of those things were true. There are so many barriers that she couldn’t even think of it as a possibility. And that made me sad because even on the hardest day, I still think, “How can tomorrow be better? What could I do differently? What are my choices?” They are endless.

If I wanted to, I could go and live on the land and embrace degrowth and grow my own food, but I’d only be pretending. If I got sick, I could still go to a hospital. The people who really live in the situation of degrowth, where they have a very low carbon footprint, also have very little agency.

If you look at it honestly, the idyllic idea of “living on the land” is not actually better for the environment on any metric. People in dense cities consume much less than those in the country. When lots of people live in one place, when they are connected to a grid and have public transport or can walk to places, they become really efficient. And people are already moving to the cities, so all the policy needs to do is make sure that the cities are well-connected and that we have access to everything we need to.

I live in what you’d call a 15-minute city. I know that’s taken on negative connotations with people, but everything I need is within 15 minutes. There is a primary school, a secondary school, several supermarkets, and a post office that I use regularly. I moved here specifically because I wanted to be somewhere where I could get to these things on foot. It’s much easier and also definitely much better for the environment. To live this way, I need the grid, and I would like the grid to be clean and reliable and not reliant on gas from Russia.

I would like it to be better than that. Our electricity is very expensive. It’s not the most expensive in Europe, but it’s up there. We could do what France did. In 10 years, we could build 58 reactors and decarbonize the grid. That would tick the box on our climate goals, but most importantly, it would make electricity cheaper at home. I have been told several times that it’s too ambitious, but I think it’s less ambitious to do what France did than to try and do what Germany did, which is decarbonize with just wind and solar. For some reason, that’s not seen as ambitious, but that’s the thing that we know doesn’t work.

Why do you think there is so much skepticism toward nuclear power? And why is it so misunderstood by the public?

The reason that I was afraid of nuclear technology for quite a long time was that it was conflated with weapons. Once I started thinking about energy, and then separating the military and civil technology, I realized that there’s not as much crossover as they’ve made out. And actually, it’s very, very difficult to develop nuclear weapons.

And then there are scary stories that we hear all the time. Like, there’s a new Chernobyl series, right? They’re constantly pumping these out. Just the word is enough to scare people. One story I was told by some of these activist organizations was that loads of people died because of the Fukushima Daiichi power plant meltdown. Now, if you look into it, they actually died because of the tsunami and the earthquake, not the meltdown. I mean, I even got it from The Simpsons. The most evil person in The Simpsons is Mr. Burns, the nuclear industry owner. And what’s a nuclear plant worker like? Homer Simpson. Lazy and irresponsible. One of the worst caricatures of a person. Even in the intro, there’s nuclear fuel portrayed as green, goopy waste just lying around.

These stories caused entire populations to associate nuclear energy with a bad feeling, and environmentalists used that fear and pushed it further.

If listeners take away just one idea from your book, what should it be?

I would like people to stop thinking in terms of scarcity. We’ve always been told, “You’re wasteful. Are you wasting food? Are you wasting electricity? Do you need to buy that thing?” That message, which is pushed all the time, makes us feel guilty for our prosperity, and in the extreme, it leads people to believe we should give it all up.

So, instead of saying, “these people have too much,” we should ask, “How do we get this to more people? How do we make this thing more efficient? How can we make better technology?” The reason we got to where we are today is that we kept pushing for more. That is the space in which human progress happens.

The best word for it is abundance. I want to see abundance for everybody, and I want to get rid of this old Malthusian idea that we can’t have it for everybody, or the planet will die.

Semafor | Energy Production

Argentina’s Shale Boom Drives a Shift to Net Energy Exports

“Argentina’s shale output is up 28% year-on-year as the country’s pivot to become an energy supplier — rather than buyer — gathers pace. Shale now represents 71% of Argentina’s total production of both oil and gas, and crude has overtaken corn and soy to become its top export; Buenos Aires had a record energy surplus of $7.8 billion last year, after becoming a net exporter in 2024.”

From Semafor.

Blog Post | Water Use

The AI Land and Water Panic Is Wrong

Bill Maher and Erin Brockovich think we are running out. We are not.

Summary: Concerns that AI data centers are exhausting America’s land and water are largely overstated. Data centers occupy relatively little land compared with agriculture and other established uses, while their water consumption reflects temporary displacement rather than permanent loss. New cooling technologies and alternative water sources are also reducing local demand, suggesting that engineering—not scarcity—will shape AI’s environmental impact.


The American consumer advocate Erin Brockovich went on Real Time with Bill Maher Friday night to talk about what she has spent the year mapping: American towns that found out a data center was coming only after the bulldozers arrived. She has collected thousands of such reports from all fifty states. A big facility, she says, can consume millions of gallons of water a day. The audience was meant to conclude that artificial intelligence is swallowing the country’s water and land.

Start with the land, because that part is easy to settle. Cushman and Wakefield, the commercial real estate firm that tracks these deals, reports that the average parcel bought for a data center in 2024 ran to a couple hundred acres. Scale that up by the computing capacity the industry expects to have running by 2030, and by my reckoning every data center in America, plus all the ground around the buildings, comes to roughly the area of Rhode Island. The buildings themselves would fit inside a mid-sized city.

Now compare that with how we already use land. The federal government requires refiners to blend corn ethanol into gasoline and growing that corn takes an area about the size of New York State, for a fuel that a 2022 study in the Proceedings of the National Academy of Sciences found is probably dirtier than the gasoline it replaces. The Agriculture Department pays farmers to leave a Kentucky-sized area unplanted. Since 2000, American farmland has shrunk by an area larger than Colorado, and output went up anyway. None of this made the evening news.

Water is the harder argument, and it is where the case goes wrong at the level of chemistry. A data center does not destroy water. Cooling moves heat but does not burn anything. Hydrogen and oxygen do not come apart in a cooling tower. The water molecules leave as vapor, and hydrologists have long put their average stay in the atmosphere at about nine days before they fall again as rain. The word often used, “consumption,” does not mean the water is gone. It means the water left the neighborhood. That is a genuine cost to a neighborhood. It is not a subtraction from the world’s supply, and no amount of AI will make it one.

The problem of local water displacement is one that engineers have been fixing for two years. The scary numbers come from old evaporative towers, but the newer Nvidia chips run at 113 degrees Fahrenheit. That is hotter than the air outside on most summer days. Heat moves from hot to cold on its own, so the liquid sheds its warmth into the open air through a radiator, like the one in a car. Those radiators need fans, and fans need power, so the better chips turn a water problem into an electricity problem. That is a good trade, because building power is something this country knows how to do.

Similarly, Microsoft has announced designs that circle the same fluid through a sealed loop past the chip and back. Google, Amazon, and Microsoft already run some sites on treated city wastewater rather than anything anyone would drink.

Brockovich anticipated this answer. In an essay published two days before the broadcast, she argued that a sealed loop does not remove the water use but only moves it to the power plant that supplies the electricity. She is right that this second, hidden figure is bigger than the water used at the site itself. But the two together still amount to less than one percent of all the water Americans consume. The figures behind it come from the Lawrence Berkeley National Laboratory, in a study Congress ordered and the Energy Department published. Its lead author, the staff scientist Arman Shehabi, supplies the numbers that both sides of this argument quote.

The comparison with national consumption is drawn by Robin Gaster of the Information Technology and Innovation Foundation, who reviewed the same evidence in July and drew two conclusions. The technology to bring on-site water use near zero already exists. And the upstream share depends on which power plants get built, which means it is not fixed either. A forecast of disaster must assume that nobody will ever build anything different.

For scale, the EPA’s WaterSense program reports that outdoor household water use runs to about nine billion gallons a day, most of it landscape irrigation: suburban sprinklers use more water in two days than all data centers in the country uses directly in a year.

The host pushed back against Brockovich’s more alarmist claims, but he soon went back to his old assumption that there are simply too many of us and that we are using too many resources. In an April 2019 monologue, Maher cheered the falling birth rate, called fewer humans the best gift we could give the planet, and named our numbers as the great unspoken cause of the climate crisis. Last Friday, he repeated those concerns. He was wrong to do so.

In 1980, the economist Julian Simon bet the biologist Paul Ehrlich, author of The Population Bomb, that a basket of metals would grow cheaper as the population grew. Ehrlich sent the check ten years later. The economist Gale Pooley and I are keeping the score. The Simon Abundance Index we published this April found that the Earth was 536 percent more resource-abundant in 2025 than in 1980, a period in which humanity added nearly four billion people. Every commodity we track is more plentiful per person than it was, because each additional person arrives with a mind as well as a mouth.

Maher has spent three decades treating every new demand on the earth as a bite out of a fixed inheritance. Data centers are only the latest one. The land is plentiful. The water is not leaving the planet, and the engineers cooling these AI machines are already several product cycles into solving the thing he is sure cannot be solved.

Interesting Engineering | Mineral Production

US Hits Jackpot: 1.78 Million Tons of Tungsten in Nevada Desert

“A US critical minerals company has recently confirmed the nation’s largest known tungsten resource at its Railroad Valley Minerals Project in Nye County, Nevada, despite a NASA land withdrawal restricting exploration across part of the site.

In its updated resource report, 3 Proton Lithium (3PL) said that the project hosts an inferred resource of 1.78 million tons of tungsten. The company revealed that the deposit is part of a mineral system that also contains world-class resources of lithium, potash, and boron.

As per 3PL, the deposit is reportedly five times larger than the biggest tungsten resource currently listed in the US and comes at a time when the country relies heavily on imports for the strategic metal…

At current consumption rates, the resources could provide the U.S. with tungsten for hundreds of years, 3PL said.”

From Interesting Engineering.

Yale Environment 360 | Energy Production

The World Adds a Third Terawatt of Solar Power

“In March, the world passed a major energy milestone, adding its third terawatt of solar power. Increasingly, poorer countries are leading the shift to solar, analysts say.

It took nearly seven decades, after the invention of the silicon solar cell in 1954, for the world to install 1 terawatt of solar capacity, conceivably enough to power the entire United States. After passing that milestone in 2022, the world added its second terawatt in 2024 and its third in 2026, Bloomberg reports.

BloombergNEF expects installations will continue apace, with the world hitting 9 terawatts of solar power by 2036. Analysts project that, by that date, poor countries will have installed more solar power than rich countries, China notwithstanding.”

From Yale Environment 360.