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Jul 22, 2026 • E309 • 00:46:35
Perovskite solar has promised a revolution for over a decade, so is it finally real? Matt and Sean talk with Joel Jean, co-founder and CEO of Swift Solar, the US startup spun out of MIT and Stanford. Joel explains how stacking a perovskite film on top of...
Jul 08, 2026 • E308 • 01:02:36
Most smart homes hand your house to Big Tech. Home Assistant is proof they don't have to.
Matt and Sean sit down with Paulus Schoutsen, the software engineer who started Home Assistant, the largest open-source smart home platform in the world, now runn...
Jun 24, 2026 • E307 • 00:44:17
The inventor of the Super Soaker, Dr. Lonnie Johnson, joins Matt to talk about his most ambitious project yet: the JTEC, a heat engine with no moving parts that converts low-grade waste heat straight into electricity. They get into how it actually works,...
Jun 10, 2026 • E306 • 00:40:26
Matt sat down with Jorge Diaz Schneider, CEO of Ion Storage Systems, to talk about their anode-less, ceramic-based solid-state battery that doesn't swell or need pressure to work. We get into why they're chasing consumer electronics instead of E...
May 27, 2026 • E305 • 01:19:22
Matt and Sean talk to Dave Borlace from the YouTube channel, Just Have a Think, to discuss the current state of the renewable energy transition in the UK and the US.Dave’s YouTube channel: https://www.youtube.com/@JustHaveaThinkChapters:00:00: Intro01:47:...
May 13, 2026 • E304 • 00:44:35
Matt and Sean talk to Zack Nelson of JerryRiggedEverything about building a new wheelchair manufacturing business, solar DIY, and the history and future of his Youtube channel.Chapters:00:00 - Intro02:08 - Zach Nelson Interview37:32 - Supercritical CO2 Tu...
Apr 29, 2026 • E303 • 00:54:48
Matt and Sean talk to Karl Rábago about the internetification of the electrical grid, and what it means for the future of owning solar panels and energy. 00:00 - Intro11:26 - Karl Rábago InterviewSupport the show directly: https://stilltbd.fm/join/Audio v...
Apr 15, 2026 • E302 • 00:41:26
https://youtu.be/nR8qn3cD1jQMatt and Sean talk to Nona Yehia (Vertical Harvest) about vertical farming, technological “growth”, and the future of food. Watch the Undecided with Matt Ferrell episode, Why This Vertical Farm is 500x More Efficient Than Farmi...
Apr 01, 2026 • E301 • 01:11:56
https://youtu.be/HicyIaKqRgkMatt talks with Two Bit Da Vinci and Ziroth about Donut Lab’s new battery, the controversy around it, and what they think it actually might be.Watch the Undecided with Matt Ferrell episode, The Breakthroughs My Net Zero Home is...
Mar 25, 2026 • E300 • 00:27:30
https://youtu.be/f67J9QO5LPYMatt and Sean talk about Donut Lab's solid state batteries, connecting with other YouTubers, and your questions. Watch the Undecided with Matt Ferrell episode, Why Everyone's Wrong About This Solid-State Battery https://youtu.b...
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