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August 17, 2026 131 mins
Professor Brian Greene reveals the biggest questions science still can’t answer, whether we’re living in a simulation, why AI may deserve human rights, and what happens at the end of the universe!  Professor Brian Greene is a theoretical physicist, mathematician, and Professor of Physics and Mathematics at Columbia University, where he also directs the Center for Theoretical Physics. He is a leading researcher in string theory, the co-founder of the World Science Festival, and the bestselling author of several books, including ‘Until the End of Time: Mind, Matter, and Our Search for Meaning in an Evolving Universe’.  He explains: ◼ Why most physicists believe time travel into the future is already possible ◼ Why he believes humans don't actually have free will ◼ How string theory could reveal what everything in the universe is really made of ◼ Why the "Pale Blue Dot" changes how you see your own life and problems ◼ Why the search for meaning may matter more than finding the answer itself Chapters 00:00:00 Intro 00:02:22 The Big Question Science Is Trying to Answer 00:03:49 How String Theory Could Explain Our Universe 00:04:44 How Could We Ever Prove String Theory Is Real? 00:06:17 What Makes the Strings in String Theory Vibrate? 00:07:52 Can String Theory Explain Why We’re Here? 00:09:16 What If We’re Living in a Simulation? 00:11:23 How Can Physics Explain Human Emotions? 00:17:23 Could Humans One Day Manufacture Emotions? 00:18:53 Would Knowing We’re in a Simulation Change Anything? 00:20:24 Could Humans and AI Eventually Merge? 00:20:59 Could Humans Ever Achieve Immortality? 00:24:57 How Knowing We’ll Die Shapes Every Decision We Make 00:26:59 Why Are We Here? The Optimistic and Pessimistic Answers 00:30:24 How Did Gods and Religions First Emerge? 00:33:33 What’s the Most Compelling Case for a God? 00:36:41 How Can We Comprehend Billions of Years? 00:40:12 Does Our Place in the Universe Make Us Insignificant? 00:42:48 How Big Is the Observable Universe, Really? 00:46:59 What Exists Beyond the Observable Universe? 00:47:56 Why Are Humans So Obsessed With Aliens? 00:51:45 Ads 00:54:26 What Is the Meaning of Life? 00:56:26 Is Free Will Actually Real? 01:00:41 What If Consciousness Is the Foundation of Reality? 01:08:05 Are Animals Conscious Like We Are? 01:10:11 What If the Universe Isn’t Infinite? 01:12:12 Could Aliens Have Already Visited Earth? 01:13:03 Could Humans Ever Travel Across the Universe? 01:15:53 How Time Travel Could Actually Be Possible 01:18:55 Who Was the Smartest Person Who Ever Lived? 01:21:26 Could AI Become the Next Einstein or Newton? 01:24:37 Ads 01:28:20 How AI Could Accelerate Science—and Even Tackle Mortality 01:29:48 Could AI Evolve Faster Than Humans Ever Could? 01:32:47 Could AI Become an Existential Threat to Humanity? 01:40:51 Can AI Ever See the World the Way Humans Do? 01:45:01 What Happens to Humanity in an Age of Abundance? 01:47:39 Could AI Ever Become Truly Conscious? 01:50:29 Why Go Vegan? The Case for Rethinking What We Eat 01:53:56 What Happens at the End of Time? 01:56:38 What Could Matter More Than What You Value Most? Follow Professor Brian: X - https://link.thediaryofaceo.com/3UrBK3y Instagram - https://link.thediaryofaceo.com/7ah5tbw Website - https://link.thediaryofaceo.com/4GQfbDy World Science Festival - https://link.thediaryofaceo.com/4ltduUF  You can purchase Brian’s book, ‘Until the End of Time: Mind, Matter, and Our Search for Meaning in an Evolving Universe’, here: https://link.thediaryofaceo.com/GQngff0 The Diary Of A CEO: ◼ Join DOAC circle here - https://doaccircle.com/ ◼ Buy The Diary Of A CEO book here - https://link.thediaryofaceo.com/BWjLTZK ◼ The 1% Diary is back - limited time only: https://thediary.com/products/one-percent-diary ◼ The Diary Of A CEO Conversation Cards (Second Edition): https://thediary.com/products/the-conversation-cards-2nd-edition ◼ Get email updates - https://link.thediaryofaceo.com/5IB1H6E ◼ Follow Steven - https://link.thediaryofaceo.com/AGU9QP4 Sponsors: Stan - Visit https://coach.stan.store/?ref=stevenbartlett&utm_source=youtube&utm_medium=podcast&utm_campaign=episode11 Linkedin Talent Solutions - http://linkedin.com/DOAC
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