Deep Fission: Using Boreholes to Cut Nuclear Costs and Deliver 24/7 Clean Electricity
What if the fastest path to reliable clean electricity is not a new reactor design, but a new place to put one? In this conversation, Paul Shapiro speaks with Elizabeth Muller, CEO of Deep Fission, about a plan to place a conventional pressurized water reactor roughly a mile underground to use geology, gravity, and groundwater for containment, pressure, and emergency cooling, potentially cutting total nuclear costs by as much as 80%. They unpack how a narrow borehole reactor could serve always-on demand from data centers and industrial users, what "proven tech combined in a new way" really means, how safety and groundwater concerns are handled through regulation and engineering practices, and the practical milestones from pilot to commercial operation so listeners can evaluate what it would take for underground nuclear to scale. Things You Will Learn How putting a conventional reactor in a mile-deep borehole can replace major above-ground systems and cut nuclear cost drivers. How Deep Fission thinks about worst-case scenarios, groundwater protection, and regulatory proof points. What milestones convert LOIs into power purchase agreements, and what timelines look like for early deployment. Tools & Frameworks Covered Geology-as-infrastructure – Uses rock, gravity, and water to replace containment and pressurization systems. Mature-tech recombination – Combines proven reactors, drilling, and geothermal heat transfer to speed time to market. Pilot-to-commercial pathway – Separates "go critical" demonstration from commercial electricity generation milestones. Episode Timestamps 04:55 – Why a mile underground could cut nuclear costs by about 80% 08:47 – Borehole size, reactor dimensions, and how the hardware fits 09:31 – Replacement strategy, sealing, and stacking long-term operations 19:45 – Groundwater and safety concerns, what regulators need to see 21:43 – Timeline to power, DOE pilot program, and moving toward commercialization #BusinessForGood #CleanEnergy #NuclearEnergy #EnergyInnovation #ClimateSolutions
The Incredible, Edible… Pea? How Meala is Using Biotech to Render Eggs Obsolete
If you've ever checked the ingredients on a baked good, you know how ubiquitous eggs are. They bind, they lift, they emulsify, they hold moisture — they're simply the structural engineers of cookies, cakes, and muffins everywhere. But they're also volatile: prices spike, supply chains break, and for anyone with an egg allergy or who's avoiding eggs for animal welfare or environmental reasons, eggs aren't exactly a welcome ingredient to find on the ingredient deck. Enter Hadar Ekhoiz Razmovich, CEO and co-founder of Meala FoodTech, an Israeli startup that's figured out how to make peas do what eggs and hydrocolloids do, and has consequently raised several million dollars in venture capital so far. Meala's breakthrough lies in taking simple pea protein and using advanced biotechnology to unlock its hidden abilities — creating a single-ingredient powder that they say can whip, bind, and gel just like an egg in baked goods and alternative meat. No multi-ingredient formulations, no methylcellulose, no animal inputs — just plants doing some biochemical magic. In this episode, Hadar shares how her background in R&D led her to tackle one of food science's toughest challenges: replacing eggs and hydrocolloids without sacrificing texture, taste, or cost. We talk about how Meala's technology works, what it takes to convince industrial bakeries to swap eggs for peas, and why she believes clean-label ingredients like this are the future of food. Hadar is not just rethinking what we eat, she and her team are rebuilding the food system from scratch, one cookie, cake, and croissant at a time. Discussed in this episode Meals is backed by The Kitchen Food Tech Hub, DSM's venture arm, Milk & Honey Ventures, Lasenor, and EIT. Our past episode with Milk & Honey Ventures' Beni Nofech. More on Meala's egg replacer, GroundBaker, is here. You can see two pending patent applications of Meala's here and here. Get to know Hadar Ekhoiz Razmovich Hadar Ekhoiz Razmovich brings over 12 years of leadership experience in the global food industry, with a strong focus on driving innovation and R&D across traditional food sectors. Throughout her career, she has led complex, multidisciplinary projects from early concept development to full commercial launch, consistently bridging technological capabilities with real market needs. In 2021, she founded Meala FoodTech with a mission to transform the food industry. Under her leadership, Meala is pioneering clean-label functional protein that deliver superior texture, bite, and mouthfeel—without compromise and without undesirable additives. Her work empowers food manufacturers to create simpler, more natural, and better-tasting products, setting a new benchmark for next-generation of food. Hadar is widely recognized for her strategic vision, deep industry insight, and ability to translate scientific innovation into scalable commercial solutions.
From Oil Wells to Oak Trees: Ben Dell's Half-Billion-Dollar Pivot to Carbon Offsetting
What if planting trees could be not just good for the planet, but also a profitable business? In this episode, I'm talking with Ben Dell, the founder and CEO of Chestnut Carbon — a company that's raised nearly $400 million, including $250 million of that in 2025, to turn farmland back into thriving native forests across the United States. And he's already forging major carbon removal deals with the likes of Microsoft and Mercedes F1. Ben's journey is a fascinating one: he began his career in oil and gas private equity, helping fossil-fuel companies optimize their operations. But during the pandemic, he had what you might call a carbon epiphany. Seeing how few trustworthy carbon-removal projects existed, he decided to create his own — one that would make measurable, verifiable, and permanent carbon storage not just possible, but investable. In our conversation, Ben explains why carbon is a commodity, and how to prove you've really stored it. He talks about how Chestnut buys up marginal cattle-grazed land and restores it into biodiverse forests — with already more than 17 million trees planted. And he goes over why he proudly calls Chestnut "conservation for profit" — a business model that needs no subsidies, just land, good science, and a lot of patience. Ben also talks about the challenges of scaling a nature-based startup, the importance of grit over glamour, and why he believes restoring forests can be one of America's most investable climate solutions. So if you've ever wondered how capitalism might actually reverse deforestation — not cause it — this episode will give you a hopeful, grounded look at what that future could look like. Discussed in this episode Ben is a managing partner at Kimmeridge. Business Insider profile and a Wall Street Journal profile on Ben's work. Our past episode with author Mike Grunwald. You can see Chestnut's patent, "Systems and methods for forest surveying," here. Chestnut's offtake partnership with Microsoft and a similar agreement with Mercedes F1. Ben recommends podcasts such as Lex Fridman's and Invest Like the Best. Get to Know Ben Dell Ben Dell is a Managing Partner of Kimmeridge and oversees investment activity across the firm. He is closely involved in the screening of new geological opportunities and in the negotiation and execution of investment strategies. Prior to founding Kimmeridge, Mr. Dell was a Senior Equity Research Analyst for Oil and Gas Exploration and Production (E&P) at Sanford C. Bernstein, where he was ranked first three times in the Institutional Investor Research Survey for coverage of E&Ps. Mr. Dell was also ranked for Natural Gas and for Oil Services and Equipment coverage. Mr. Dell joined Sanford C. Bernstein in 2003. Prior to joining Bernstein, Mr. Dell was employed at British Petroleum (BP) in its M&A and finance group. Before moving into the finance field, Mr. Dell also held positions as an exploration geologist and geophysicist across several of BP's regional business units. Mr. Dell is currently CEO of Chestnut Carbon, a nature-based carbon removal developer and is on the Board of Caturus HoldCo, LLC., a large private natural gas producer in South Texas. He previously held positions as Chairman of the Board and interim CEO of Civitas Resources, Inc. ("Civitas"), a company that formed from the merger of Extraction Oil & Gas, Inc. and Bonanza Creek Energy, Inc. Mr. Dell earned an undergraduate degree and a master's degree in Earth Sciences from St. Peter's College, Oxford.
Ready for a Carpet Made of Human Hair? This Entrepreneur Turns Salon Waste into Textiles
What if one solution to fashion's waste problem is literally growing on our own heads? Every day, salons around the world toss out millions of pounds of freshly cut human hair — a clean, protein-rich, renewable resource that mostly ends up in landfills or incinerators. But what if that so-called waste could become the next sustainable textile? My guest on this episode, Zsofia Kollar, is the founder and CEO of Human Material Loop, a Netherlands-based startup turning salon hair waste into a high-performance fibre that behaves like wool — but with 43 times lower CO₂ emissions, 20 times less water use, and none of the animal cruelty or plastics. Their branded fiber, called Adara, is already being spun into things like carpets, curtains, and acoustic panels — and it's made from something we all grow ourselves. In this conversation, Zsofia and I talk about how she got the idea to build an entire materials company out of human hair, how her technology works, why hair is such a strong and versatile material, the "ick" factor of human-derived fibres, and how she's scaling her model so that salons and HML benefit alike. If you think using human hair in textiles sounds strange, stick around — because by the end of this episode, you might just want a carpet made from your own cut-offs. I'll let Zsofia make the case. Discussed in this episode Washington Post coverage of Human Material Loop's work. Vogue and CNN have covered their work, too. Zoroastrians sometimes practice sky burial on a Tower of Silence, in which vultures are allowed to consume a recently deceased human. Our past episode on human composting with Recompose. Get to Know Zsofia Kollar Zsofia Kollar is a forward-thinking entrepreneur passionate about sustainable innovation. Science and design are crucial in the company's development. After her experience running an independent design studio, Zsofia was driven to reimagine waste management, focusing particularly on hair waste. Her goal is to foster collaboration and innovation for a more sustainable future. Human Material Loop demonstrates that sustainability and economic growth can coexist. Zsofia's dedication extends beyond her CEO role—she's also a published author and university lecturer, inspiring others in design and sustainability. Her vision entails holistic sustainability, where science, design, and collaboration reshape waste management and drive innovation.
From Fashion Model to Fission Mission: Isabelle Boemeke's Nuclear-Powered Future
When you hear the word nuclear, does your mind flash to mushroom clouds, Chernobyl, or maybe the glowing three-eyed fish from The Simpsons? Well, what if nuclear electricity — far from being an environmental villain — is actually one of the safest, cleanest, and most land-efficient energy sources we have? It turns out that former fashion model Isabelle Boemeke is on a mission to change how we think about nuclear energy. When she and I met a few years ago, in Italy of all places, she was known by many simply as Isodope, her online persona that blends fashion, futurism, and fission to make nuclear cool again. And now, in her new book Rad Future, Isabelle argues that nuclear power isn't just misunderstood — it's essential to solving climate change, land preservation, and numerous other important concerns. In our conversation, Isabelle details: Why fear of nuclear power stems more from cultural trauma than from science, Why nuclear electricity is safer and environmentally-friendlier than not just fossil fuels, but also solar and wind, What's fact vs. fiction when it comes to the world's biggest energy disasters, And why, despite all the excitement about fusion and modular reactors, maybe the smartest thing we can do right now is simply pick a proven fission design — and start building them fast. I always love when it turns out that the thing we thought was the villain is actually a hero, or at least better than what we thought. If you do too, this is the episode for you, as this episode may challenge your assumptions about what's truly "green" and is actually safe. Discussed in this episode The 2019 Amazon Rainforest fires and Australian fires that decimated massive amounts of wildlife habitat helped inspire Isabelle to focus on environmental concerns such as climate change. The 1975 Baquiao dam collapse killed hundreds of thousands of people. Isabelle recommends checking out www.whatisnuclear.com and the Decouple Podcast. Commonwealth Fusion recently raised $863 million. The US military is investing in small, mobile nuclear reactors. Paul recently read a sci-fi book about nuclear-powered wildlife called The Kaiju Preservation Society. Get to Know Isabelle Boemeke With her signature mix of humor, sharp research, and optimistic vision, her debut book, Rad Future, makes the case for nuclear electricity as one of the best tools to solve the climate crisis. Boemeke is also known as Isodope, the irreverent digital persona on a mission to make nuclear cool. She is the Founder and Executive Director of Save Clean Energy and board member of Nature is Nonpartisan and Nuclear Scaling Initiative, where she works at the intersection of policy, culture, and technology to accelerate pragmatic solutions. She delivered a TED Talk that has been viewed nearly 2 million times, led a grassroots campaign that helped delay the closure of California's Diablo Canyon Power Plant, and is a TIME Magazine "Next Generation Leader."