{"podcast":{"title":"Lex Fridman Podcast","slug":"lex-fridman-podcast","podcast_index_feed_id":745287,"rss_url":"https://lexfridman.com/feed/podcast/","website_url":"https://lexfridman.com/","image_url":"https://lexfridman.com/wordpress/wp-content/uploads/powerpress/artwork_3000-230.png","author":"Lex Fridman","episode_count":497,"summary":"Conversations that explore technology, history, philosophy, physics, mathematics, biology, chemistry, engineering, AI, robotics, programming, music, film, art, sports, psychology, neuroscience, geopolitics, business, economics, religion, astronomy, and the human condition with people from all walks of life.","last_synced_at":null,"page_url":"https://stenobird.com/podcast/lex-fridman-podcast"},"episode":{"title":"#485 – David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy","slug":"485-david-kirtley-nuclear-fusion-plasma-physics-and-the-future-of-energy","published_at":"2025-11-17T18:55:13+00:00","page_url":"https://stenobird.com/podcast/lex-fridman-podcast/485-david-kirtley-nuclear-fusion-plasma-physics-and-the-future-of-energy","show_page_url":"https://stenobird.com/podcast/lex-fridman-podcast","url":"https://lexfridman.com/david-kirtley/?utm_source=rss&utm_medium=rss&utm_campaign=david-kirtley","audio_url":"https://media.blubrry.com/takeituneasy/ins.blubrry.com/takeituneasy/lex_ai_david_kirtley.mp3","summary":"David Kirtley is a nuclear fusion engineer and CEO of Helion Energy, a company working on building the world’s first commercial fusion power plant by 2028. Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep485-sc See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc. Transcript: https://lexfridman.com/david-kirtley-transcript CONTACT LEX: Feedback – give feedback to Lex: https://lexfridman.com/survey AMA – submit questions, videos or call-in: https://lexfridman.com/ama Hiring – join our team: https://lexfridman.com/hiring Other – other ways to get in touch: https://lexfridman.com/contact EPISODE LINKS: David’s X: https://x.com/dekirtley David’s LinkedIn: https://bit.ly/4qX0KXp Helion: https://www.helionenergy.com/ Helion’s YouTube: https://youtube.com/HelionEnergy SPONSORS: To support this podcast, check out our sponsors & get discounts: UPLIFT Desk: Standing desks and office ergonomics. Go to https://upliftdesk.com/lex Fin: AI agent for customer service. Go to https://fin.ai/lex Miro: Online collaborative whiteboard platform. Go to https://miro.com/ LMNT: Zero-sugar electrolyte drink mix. Go to https://drinkLMNT.com/lex BetterHelp: Online therapy and counseling. Go to https://betterhelp.com/lex Shopify: Sell stuff online. Go to https://shopify.com/lex OUTLINE: (00:00) – Introduction (03:00) – Sponsors, Comments, and Reflections (11:35) – Nuclear fission vs fusion (21:35) – Physics of E=mc^2 (26:50) – Is nuclear fusion safe? (32:11) – Chernobyl (38:38) – Geopolitics (40:33) – Extreme scenarios (47:28) – How nuclear fusion works (1:20:20) – Extreme temperatures (1:25:21) – Fusion…","meta_description":"David Kirtley is a nuclear fusion engineer and CEO of Helion Energy, a company working on building the world’s first commercial fusion power plant b…","key_points":[],"chapters":[],"topics":[],"duration_seconds":null,"processing_state":"failed","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/lex-fridman-podcast/episodes/485-david-kirtley-nuclear-fusion-plasma-physics-and-the-future-of-energy/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/lex-fridman-podcast/485-david-kirtley-nuclear-fusion-plasma-physics-and-the-future-of-energy.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}