Wimbledon Players Shower in Solar-Heated Water. Here's Who Built It.

He Flew to Space. Now He's Building a New Space Station

Dylan Taylor is the founder and CEO of Voyager Technologies, a space infrastructure company that went public in 2025. Voyager is building Starlab, a commercial successor to the International Space Station, and through its Nanoracks business is the largest commercial user of the ISS today, with more than 1,300 experiments run in orbit. In this conversation with Daniel Epstein, Dylan explains why he sees space not as an escape from Earth but as a way to improve life on it, from cancer research in microgravity to printing human tissue that the body will not reject. He traces his own path back to a three-year-old in a rough part of West Denver who fell in love with space watching Star Trek with his father, and to the moment at thirty-eight when he was successful but unfulfilled and decided to redirect his ambition toward purpose. Dylan flew to space himself in 2021 and describes the overview effect as a single new emotion built from connection, fear, and anger, an experience a Johns Hopkins study measured as off the charts. It is why he founded Space for Humanity, the nonprofit that sent Katya Echazarreta, a Mexican-born engineer, to space. He also reflects on mentorship, fatherhood, why he loves running public companies, and his honest, skeptical answer on whether we are alone in the universe. Dylan joined the Unreasonable Fellowship through the Unreasonable Impact program, run in partnership with Barclays.   (00:00) Introduction (02:43) What Voyager Technologies Is (04:25) Space as a Way to Enhance Life on Earth (05:08) Falling in Love With Space at Age Three (06:27) Ambition, Fear of Failure, and Finding Purpose at 38 (09:45) The Overview Effect and the Science of Awe (13:49) Why He Founded Space for Humanity (15:15) Katya's Story and the Ripple Effect (18:32) Reflected Glory and Working Backward From Impact (20:39) Replacing the ISS: Starlab and NASA (23:00) Going Public, and the Barclays Partnership (26:55) The Next Ten Years: LEO, Lunar, and Lagrangian (28:53) The Moon: Helium-3, Oxygen, and Habitation (31:13) Data Centers and the Problem of Cooling in Space (33:04) What Microgravity Makes Possible: Keytruda and Printed Organs (35:38) The Deep Why, and Remembering Who We Are (40:26) Why He Loves Running Public Companies (42:31) Mentorship: His Father and the Mentor Agreement (46:48) Why His Father Was His Greatest Mentor (49:44) His View on Extraterrestrial Life (51:30) Fatherhood, Autonomy, and Accountability (55:10) How to Get Involved (56:24) Closing Reflections

The Battery Built for Traffic Lights, Now Powering AI Data Centers.

ZincFive is the world's leading nickel-zinc battery company. Its batteries cannot be forced into fire, are over 90 percent recyclable through a smelter-free chemical process, and deliver power in millisecond bursts that lithium cannot match on its own. Nearly 2 gigawatts are deployed or under contract for data centers globally, and the company just launched its first battery cabinet engineered specifically for AI workloads. Tim Hysell commercialized the first nickel-zinc product in 2012 as a battery backup for traffic lights. By 2016 he had merged his company with PowerGenix to consolidate the chemistry and the manufacturing under one roof. ZincFive now holds over 80 patents globally on nickel-zinc and is positioned at the center of a $90 billion addressable market. In this conversation with Daniel Epstein, Tim talks about how a 90-day challenge to his engineering team led to the founding chemistry, why he believes the "no asshole" rule is the most important value at the company, the cardiologist who taught him in his early twenties what real leadership looks like, and the mother who worked alongside him in the fields from age five with eight hours of conversation a day. Tim joined the Unreasonable Fellowship through the Unreasonable Impact program in 2018, run in partnership with Barclays. In September, after thirteen years as founder and CEO, he handed the company to his longtime COO Tod Higinbotham. His wife and both sons still work at ZincFive. (00:00) Introduction (02:09) Why ZincFive Exists (03:00) The Stoplight Problem That Started Everything (04:45) From Stoplights to Data Centers (06:14) Sprinter, Not Marathon: Nickel-Zinc vs. Lithium (07:06) The Battery That Won't Catch Fire (08:42) Two Gigawatts Deployed (11:12) How AI's 50-Millisecond Power Bursts Work (13:00) The $90 Billion Market (15:40) The Other Industries Still Waiting (18:33) Why He Wanted to Manufacture in the First Place (20:43) The 90-Day Empowerment Story (22:16) Where the Leadership Style Comes From (24:00) Food Stamps and the Fields With Mom at Age Five (27:50) The Two Parents Who Shaped Him (29:53) What Team Sports Taught Him About Building Culture (31:50) Coach vs. Quarterback: The Real Job of a CEO (34:30) The 2018 Culture Session That Changed Everything (37:54) The "No Asshole" Rule (42:30) Eight Years With Barclays (46:43) The Cardiologist Story (50:15) Hard Conversations and Almost Missing Payroll (54:46) Handing the Reins to Tod Higinbotham (58:25) What He Tells His Sons (Who Also Work at ZincFive) (1:03:30) Where the Name ZincFive Comes From (1:05:32) Closing Reflections

Renewable Energy That Saves India’s Factories 40% on Their Power Bill

Fourth Partner Energy finances, builds, and operates renewable energy for India’s factories. Clients save 30 to 40% on their power bills and pay nothing upfront to switch. The company now serves over 400 clients across 23 states, has raised $475 million, and is building a gigawatt of clean energy a year. Saif Dhorajiwala co-founded the company in 2010 with very little money. They started by building small solar plants for rural schools in interior India. Today their largest facility has 91 wind turbines and a thousand acres of solar, connected by a 90-kilometre transmission line that sends power from south India to factories in the Himalayas. In this conversation with Daniel Epstein, Saif talks about growing up in a 250-square-foot apartment in Mumbai, why there are no job titles at Fourth Partner, how every employee owns stock, what happened when they couldn’t make payroll in the early years, and the shared belief in karma that holds a Hindu co-founder and a Muslim-born co-founder together through 15 years of building. (00:00) Introduction (02:10) The Genesis of Fourth Partner Energy (06:00) Starting with Rural Schools (07:38) The Pivot to Commercial and Industrial (08:44) The Scale Today (11:09) A Gigawatt a Year (13:07) How the Economics Work (16:00) Zero Cost to Switch (18:10) John Kerry and the Advice That Changed Everything (19:57) A 560-Megawatt Facility You Can See from Space (22:05) The Hardest Part of Building at This Scale (25:22) Raising $475 Million (27:07) Why It’s Called Fourth Partner (28:34) No Titles, No Offices, No Hierarchy (29:09) They Eat, Sleep, Drink Fourth Partner (30:23) Trust as a Foundation (32:49) When They Couldn’t Make Payroll (36:09) Faith, Karma, and Doing the Right Thing (40:09) Growing Up in a 250-Square-Foot Apartment (44:19) What Saif Has Learned About Fundraising (47:22) Working Two Days a Week (49:29) What Makes a Good Mentor (51:07) The Next 10 Years (55:21) How to Get Involved (57:13) Closing Reflections

Wimbledon Players Shower in Solar-Heated Water. Here's Who Built It.

Heat is responsible for 40% of global emissions and more than half of all energy consumed on the planet. Most of it still comes from burning fossil fuels, and almost nobody is talking about decarbonizing it. Christophe Williams co-founded Naked Energy to change that. Their solar collectors convert up to 80% of the sun's energy into hot water, compared to about 20% for traditional solar panels. The hybrid version generates both heat and electricity from the same rooftop. Payback runs four to eight years, and an industrial system can save over half a million pounds annually. Before clean energy, Christophe spent 15 years as a film editor in advertising, cutting music videos and working on global campaigns. The pivot came from his grandfather, a physicist who worked on wave power and flywheel storage in the 1970s. He told Christophe as a child that if we put all known fossil fuels into a calendar year, we've only got minutes left. In this conversation, Christophe talks about selling his house and pulling his kids from school to start the company, what it took to raise £30 million as a first-time founder, the independent test that came back short and the CTO who turned it into a roadmap, Barclays helping land the Wimbledon project, and the question that drove everything: could I live with myself if I don't give this a go? (00:00) Introduction (00:25) Why "Naked Energy"? (03:01) The Warm Elephant in the Room (07:26) Hotels, Hospitals, and Factories (09:40) How the Technology Works (12:43) Storing Summer Heat for Winter (14:26) The Economics of Solar Thermal (16:34) 80% Efficiency vs. 20% for Traditional Solar (18:42) Solar Thermal Meets Heat Pumps (22:22) From Film Editor to Clean Tech CEO (24:46) Diana Ross, Joy Division, and Dennis Hopper (27:11) A Grandfather Who Worked on Wave Power (29:08) "We've Only Got Minutes Left" (33:08) Winning the Shell Springboard Competition (34:23) "Could I Live with Myself If I Don't Give This a Go?" (39:27) Selling the House and Taking the Kids Out of School (44:34) Hardest Lessons as a First-Time CEO (46:03) Crying into a Beer in Germany (51:20) E.ON, Barclays, and Wimbledon (54:26) What 1% of the World's Heat Demand Looks Like (59:46) A Physicist Daughter Joins the Business (1:03:13) How to Work with Giant Corporations (1:06:31) Closing Reflections

She Studied Time Travel at MIT. Now She's Making Food from Air.

Lisa Dyson has a PhD from MIT in string theory. Her thesis covered rotating black holes, cosmology, and time travel. She is now the co-founder and CEO of Air Protein, a company that makes protein and other food ingredients from CO2, water, and energy. The technology was originally developed by NASA during the Apollo program. The idea was to feed astronauts on long space voyages by recycling the carbon in exhaled air through cultures that could turn it into nutrients. When the program ended, the work was shelved. Lisa and her co-founder Dr. John Reed found it in the research literature decades later. When she called NASA, the scientist on the other end told her he could cry. He never thought anyone would pick it up. Air Protein's cultures work like yogurt starters. Instead of milk, they feed on CO2, water, and energy and produce protein in hours. The process runs day and night, needs no farmland, and uses orders of magnitude less water than conventional agriculture. A soy farm the size of Texas would match the output of an Air Protein facility the size of Walt Disney World. In this conversation, Lisa talks about going to 14 schools by the age of 14, what she learned from an entrepreneur father who modeled both resilience and failure, leaving BCG to start a company on the fringe of what seemed possible, and the mentor at an Unreasonable Impact Program who told her to stop carrying the weight of the world and let her team inspire her instead. (00:00)  Introduction (01:57)  What is Air Protein? (04:30)  The Cultures Behind the Science (08:31)  Environmental Advantages (10:28)  An Entrepreneurial Father and a Scientist's Mind (12:24)  String Theory, Black Holes, and Time Travel (12:59)  14 Schools by Age 14 (15:46)  Discovering the NASA Research (17:20)  Leaving BCG and Taking the Leap (19:19)  The NASA Scientist Who Could Cry (20:16)  The Birth of Kiverdi and Air Protein (24:55)  Physics Meets the Future of Food (28:42)  The Hardest Part of Starting a New Industry (34:13)  Let Your Team Inspire You (36:16)  Working with Barclays and Mars (39:27)  What the World Looks Like in a Decade (42:12)  How to Get Involved (44:45)  Closing Reflections