What’s up with the fourth dimension? Neil deGrasse Tyson and Chuck Nice explore the dimensions, worldlines, and what it would mean to be 4D. Learn about time and space and how we navigate through both. What would a 2D world be like for two-dimensional people? We break down what it's like for 3D beings to interact with the second dimension and what it would be like for 4D beings to interact with the third dimension. Plus, we discuss flying cars and whether we already have them. Get the NEW StarTalk book, 'To Infinity and Beyond: A Journey of Cosmic Discovery' on Amazon: https://amzn.to/3PL0NFn Come check out our brand-new channel! null Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #neildegrassetyson 00:00 - Introduction: Dimensions 3:00 - Dimensional Surgery & Looking at a 2D World 6:20 - Escaping 2D & 3D Prison 8:10 - Even Higher Dimensions 9:21 - Do We Already Have Flying Cars?