Today I Learned Science
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Technology
David's Gemini Notebook Podcast Collection
by David Weissman
Today: #29 in Technology, South Africa on our combined chart.
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Latest episodes
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Why AI Needs a New Kind of Computer
October 6, 2026 · 25 minModern AI can write code and generate images, yet much of its hardware still follows a design rooted in 1945. This episode explores the von Neumann bottleneck: the costly shuttling of information between memory and processors. As AI’s…
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Could a Pill Replace Your CPAP?
September 29, 2026 · 23 minWhat if treating sleep apnea started with a bedtime pill and a glass of water? This episode explores AD109, an experimental oral treatment designed to help keep the upper airway open by targeting the nerve signals that control its muscles…
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Meta Muse: From Chatbot to Chief of Staff (22 min)
September 27, 2026 · 22 minWhat if your morning notifications were a report of everything already handled? Emails drafted, appointments rearranged, and a trip assembled from the Instagram reels you saved and forgot. This episode explores the promise of Meta Muse and…
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Meta Muse: From Chatbot to Chief of Staff (56 min)
September 27, 2026 · 57 minWhat if your morning notifications were a report of everything already handled? Emails drafted, appointments rearranged, and a trip assembled from the Instagram reels you saved and forgot. This episode explores the promise of Meta Muse and…
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David Sinclair and the Quest to Reverse Aging
September 25, 2026 · 49 minWhat if aging cells could recover the instructions that once kept them young? This episode explores David Sinclair’s information theory of aging and the science of partial epigenetic reprogramming—an effort to restore youthful cell…
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From Telegraph Wires to Logic Gates
September 25, 2026 · 1 hr 0 minWhat does a backyard telegraph have to do with the processor in your phone? Following chapters 5–8 of Charles Petzold’s Code, this episode starts with a simple attempt to send a message across a fence and follows the physical problems that…
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The Backup Copy of Youth
September 25, 2026 · 51 minWhat if some of aging is a problem of lost instructions rather than worn-out parts? Drawing on a conversation with geneticist David Sinclair, this episode explores the epigenome—the system that helps cells decide which genes to use—and the…
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The Secret Language of On and Off
September 25, 2026 · 1 hr 21 minA flashlight blinking across a dark street seems far removed from a computer. But both turn simple physical states into meaningful messages. Guided by the first four chapters of Charles Petzold’s Code: The Hidden Language of Computer…
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The Ice That Built the Modern World
September 25, 2026 · 43 minCold was once something people had to harvest in winter and hope would survive the trip to summer. Drawing on Steven Johnson’s How We Got to Now, this episode begins with Frederick Tudor’s unlikely plan to ship New England pond ice to the…
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The Glasses That Know Too Much
September 24, 2026 · 54 minWhat if replacing your smartphone meant wearing a computer on your face? Drawing on Joanna Stern’s interview with Mark Zuckerberg, this episode explores Meta’s bet that AI glasses could move computing out of our pockets and into the world…
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From Sand to Stars: How Glass Changed the World
September 23, 2026 · 28 minA scarab in Tutankhamun’s tomb held a piece of desert glass formed millions of years earlier. How did a material born from heat become a way to see cells, distant planets, and even ourselves? This episode follows glass from natural shards…
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From Paper Charts to AI Scribes
September 20, 2026 · 24 minOne of medicine’s most consequential innovations was a simple file folder. This episode traces the evolution of the medical record—from private physicians’ casebooks and sprawling hospital ledgers to unified patient charts, electronic…
About the show
David’s Gemini Notebook Podcast Collection is a curated library of AI-generated audio overviews exploring the topics I find most fascinating, including artificial intelligence, technology, medicine, science, history, space, and the occasional intellectual rabbit hole. Each episode turns interesting source material into an engaging conversational podcast, making complex ideas easier to absorb, revisit, and share. I created this channel mainly as a personal collection and as an easy way to share these explorations with friends, family, and anyone else who enjoys learning something new.