Janna Levin is a theoretical physicist and cosmologist specializing in black holes, cosmology of extra dimensions, topology of the universe, and gravitational waves.Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep468-scSee below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.Transcript:https://lexfridman.com/janna-levin-transcriptCONTACT LEX:Feedback – give feedback to Lex: https://lexfridman.com/surveyAMA – submit questions, videos or call-in: https://lexfridman.com/amaHiring – join our team: https://lexfridman.com/hiringOther – other ways to get in touch: https://lexfridman.com/contactEPISODE LINKS:Janna’s X: https://x.com/JannaLevinJanna’s Website: https://jannalevin.comJanna’s Instagram: https://instagram.com/jannalevinJanna’s Substack: https://substack.com/@jannalevinBlack Hole Survival Guide (book): https://amzn.to/3YkJzT5Black Hole Blues (book): https://amzn.to/42Nw7IEHow the Universe Got Its Spots (book): https://amzn.to/4m5De8kA Madman Dreams of Turing Machines (book): https://amzn.to/3GGakvdSPONSORS:To support this podcast, check out our sponsors & get discounts:Brain.fm: Music for focus.Go to https://brain.fm/lexBetterHelp: Online therapy and counseling.Go to https://betterhelp.com/lexNetSuite: Business management software.Go to http://netsuite.com/lexShopify: Sell stuff online.Go to https://shopify.com/lexAG1: All-in-one daily nutrition drink.Go to https://drinkag1.com/lexOUTLINE:(((((((((((((((((((((((PODCAST LINKS:– Podcast Website: https://lexfridman.com/podcast– Apple Podcasts: https://apple.co/2lwqZIr– Spotify: https://spoti.fi/2nEwCF8– RSS: https://lexfridman.com/feed/podcast/– Podcast Playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOdP_8GztsuKi9nrraNbKKp4– Clips Channel: https://www.youtube.com/lexclips