From First Principles

Krishna Choudhary and Lester Nare

From First Principles is a fast, funny, and rigorous breakdown of the biggest science stories of the week, hosted by Lester Nare and physicist Krishna Choudhary, PhD. We go past headlines into the actual mechanics: what happened, why it matters, and what everyone’s missing.

Expect physics, space, AI, energy, biotech, and the occasional “wait… is that real?” story. If you’re curious, skeptical, and you like learning in public — you’re in the right place.

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#63
Wednesday · 1 hr 20 min
Nobel Prize in Chemistry 2026 Explained: Mirror Molecules (EP 63)
Why does life favor one molecular mirror image? The 2026 Nobel Prize in Chemistry honors Henri B. Kagan and Kenso Soai for nonlinear effects and autocatalysis in asymmetric organic synthesis. Lester Nare and Krishna Choudhary unpack the science from first principles: chirality, Pasteur's crystals, enantiomeric excess, and how a tiny imbalance can grow into an overwhelming preference for one molecular hand. We connect Kagan's catalyst discoveries and the Soai reaction to medicines, the origins of biological handedness, and the serious concerns around hypothetical mirror life. Plus: symmetry in physics, Frances Oldham Kelsey and thalidomide, and our interpretation of a Nobel illustration. CHAPTERS 00:00 Why life has a molecular handedness 01:33 Hello Internet 02:49 The 2026 Chemistry laureates 06:24 Chirality and mirror-image molecules 12:10 Pasteur and the history of handedness 19:36 Why is life's chemistry one-handed? 24:35 Frank and the origin-of-life puzzle 29:14 Enantiomeric excess explained 30:30 Kagan and nonlinear effects 38:58 FFP and symmetry in physics 42:20 Soai and asymmetric autocatalysis 51:28 Why chirality matters for medicine 58:21 What this does and does not explain about life 1:00:25 Mirror life and biological risk 1:10:37 Examining the Nobel illustration 1:14:10 Recap and Nobel week reflections RESEARCH & FURTHER READING Original papers and supporting context: Frank's model (1953): https://doi.org/10.1016/0006-3002(53)90082-1 Puchot, Kagan et al. (1986): https://doi.org/10.1021/ja00269a036 Soai et al. (1995): https://doi.org/10.1038/378767a0 Sato et al., amplification (2003): https://doi.org/10.1002/anie.200390105 Mirror-life risks (2024): https://doi.org/10.1126/science.ads9158 Nobel announcement: https://www.nobelprize.org/prizes/chemistry/2026/press-release/ EDITORIAL NOTES Intro: the 50:50 example describes an unbiased synthesis, not all chemistry. The Soai reaction is a clue to amplification, not proof of how life began. On-screen clarifications: 04:38 B-DNA is right-handed; Z-DNA can form a left-handed helix. 13:56 Pasteur separated sodium ammonium tartrate crystals. 18:48 L/D configuration does not specify optical rotation. 19:10 Proteins mainly use L-amino acids; DNA/RNA use D-sugars. 22:55 Mentos mainly triggers CO2 bubble nucleation. 27:18 Asymmetric catalysis and autocatalysis are distinct. 34:07 0.25 × 0.25 = 0.0625 = 6.25%. 36:31 Inactive mixed catalyst pairs are a simplified model. 37:55 The normalized product-ratio curve need not be parabolic. 42:04 Wu: preferential emission opposite spin; antineutrinos also emitted. 45:30 5-pyrimidyl alkanol; an alkanol is an alcohol. 47:10 The tiny-imbalance result is Sato et al. (2003), cited above. 47:40 A demonstration of symmetry breaking by asymmetric autocatalysis. 49:09 Above 99.5% ee means above 99.75% majority form, not exactly 100%. 49:57 0.00005% excess is 1 part in 2,000,000. 52:44 Thalidomide enantiomers interconvert in the body. 53:36 Merrell applied in the U.S.; Kelsey withheld approval. Trial exposure occurred. 1:02:09 Mirror-life catastrophe is a serious risk, not an observed outcome. 1:03:28 Antibodies are adaptive immunity, not innate immunity. 1:03:53 Impaired recognition does not mean proven total immune invisibility. 1:04:27 Some treatments might work; ecosystem protection is very difficult. 1:04:56 No reproducing mirror organism has been reported. 1:09:19 Chimeras and genetic modification are not interchangeable. 1:10:37 The Nobel-diagram critique is our interpretation, not an official correction. 1:11:51 Solid wedge: toward; hashed wedge: away; ordinary line: neither. WATCH & FOLLOW Full video: https://youtu.be/Wdapv1hFT4w Episode notes: https://ffppod.com/episodes/ep63 Follow @FFPPod on Instagram, TikTok, X and Facebook. Breaking down science news so it makes sense to curious people everywhere.
S1 · E62
Tuesday · 1 hr 2 min
Nobel Prize in Physics 2026 Explained: IceCube & Neutrinos (EP 62)
Why build a telescope inside a billion tons of Antarctic ice? The 2026 Nobel Prize in Physics recognizes Francis Halzen's work on IceCube and the discovery of high-energy neutrinos from the cosmos. In Episode 62 of From First Principles, Lester Nare and Krishna Choudhary explain neutrinos from the ground up: why these elusive particles make powerful cosmic messengers, how faint flashes of Cherenkov light reveal their interactions, and why detecting them requires an observatory buried deep beneath the South Pole. We follow the path from beta decay and the first neutrino experiments to AMANDA, IceCube's construction, the 2013 astrophysical breakthrough, a distant blazar, and a neutrino map of the Milky Way. Along the way: cosmic rays, the Oh-My-God particle, tracks versus cascades, and the international collaboration behind the discovery. CHAPTERS 00:00 Hunting ghost particles beneath Antarctica 01:16 Hello Internet and Nobel Prize 05:30 What are neutrinos? 10:00 Neutrinos as cosmic messengers 15:02 The Oh-My-God particle 16:21 Cosmic-ray energies 19:07 Cosmic particle accelerators 22:28 Why look for neutrinos? 25:52 How to detect a neutrino 29:23 Cherenkov light 33:13 Building a neutrino observatory 37:17 From Antarctic ice to AMANDA 42:21 Building IceCube 44:59 Reading tracks and cascades 49:30 Backgrounds and the 2013 discovery 52:46 Tracing cosmic neutrino sources 54:16 Mapping the Milky Way 58:23 IceCube collaboration and Gen2 1:01:05 Closing and Nobel week RESEARCH & FURTHER READING AMANDA in Antarctic ice (2001): https://doi.org/10.1038/35068509 IceCube detector and instrumentation (2017): https://doi.org/10.1088/1748-0221/12/03/P03012 First PeV neutrinos (2013): https://doi.org/10.1103/PhysRevLett.111.021103 Astrophysical neutrino evidence (2013): https://doi.org/10.1126/science.1242856 Blazar TXS 0506+056 (2018): https://doi.org/10.1126/science.aat1378 Archival blazar neutrino emission (2018): https://doi.org/10.1126/science.aat2890 Milky Way neutrino map (2023): https://doi.org/10.1126/science.adc9818 Gamma-ray burst constraints (2012): https://doi.org/10.1038/nature11068 IceCube overview: https://icecube.wisc.edu/science/icecube/ EDITORIAL NOTES Intro: the 2013 breakthrough was high-energy astrophysical neutrinos. Lower-energy supernova neutrinos were detected in 1987. On-screen clarifications: 06:45 Beta-minus decay produces a proton, electron and electron antineutrino. 11:10 Davis studied solar neutrinos; Koshiba's team detected SN 1987A neutrinos. 17:50 The cosmic-ray knee and ankle are not fixed distance boundaries. 19:38 Required accelerator size depends on magnetic-field strength. 24:18 Ground-based telescopes also detect gamma rays through air showers. 27:48 W interactions produce charged leptons; Z scattering preserves neutrino flavor. 34:06 The underwater concept dates to 1960; DUMAND developed in the 1970s. 36:09 Baikal holds about one-fifth of unfrozen surface freshwater. 38:53 Earth filters muons but also absorbs many very-high-energy neutrinos. 41:26 Pressure converts air bubbles into clathrates, reducing light scattering. 42:28 Construction finished in December 2010; full operations began in May 2011. 44:27 Sensors are DOMs; DeepCore is a densely instrumented detector region. 45:47 Timing gives direction; light yield and pattern help estimate energy. 49:44 Upgoing events can still be atmospheric neutrinos. 53:12 TXS 0506+056 is about 3.7 billion light-years away. 56:38 Long GRBs often involve collapsing stars; short GRBs often involve mergers. WATCH & FOLLOW Full video: https://youtu.be/eMahxeBj5k0 Episode notes: https://ffppod.com/episodes/ep62 Medicine Nobel explained: https://youtu.be/PKAYqhy8xf8 Follow @FFPPod on Instagram, TikTok, X and Facebook. From First Principles: Breaking down science news so it makes sense to curious people everywhere.
S1 · E61
Monday · 1 hr 11 min
Nobel Prize in Medicine 2026 Explained: Optogenetics (EP 61)
How do you prove what a brain cell actually does? The 2026 Nobel Prize in Medicine celebrates a remarkable answer: give cells a light-sensitive protein, then switch their activity on or off with light. In Episode 61 of From First Principles, Lester Nare and Krishna Choudhary explain optogenetics from the ground up and trace the discoveries of Peter Hegemann, Georg Nagel and Karl Deisseroth. We follow the story from algae swimming toward light to channelrhodopsins, precisely controlled neurons, and experiments probing memory, reward and behavior. Then we explore heart-brain connections, early attempts to restore vision, and what these experiments can and cannot tell us. CHAPTERS 00:00 The discovery that put brain cells under light control 02:34 Hello Internet 03:28 2026 Medicine Nobel and optogenetics 05:38 Understanding the brain 08:42 From correlation to causation 18:13 Controlling neurons with light 21:25 Early optogenetics and the chARGe system 24:17 Light-sensitive microbial proteins 26:26 Algae and phototaxis 31:42 Discovering channelrhodopsins 34:42 Nagel and light-gated ion channels 40:55 Controlling mammalian neurons 50:19 Expanding the optogenetic toolkit 56:10 Neural circuits and behavior 59:02 Memory, reward and reinforcement 1:02:53 Heart rhythm and emotion 1:04:02 Beyond the brain and toward medical treatments 1:06:56 Implications and limits 1:09:10 Closing and Nobel week RESEARCH & FURTHER READING Full paper list: https://ffppod.com/episodes/ep61 Nobel Prize announcement and background: https://www.nobelprize.org/prizes/medicine/2026/summary/ Optical control of neurons: https://doi.org/10.1038/nn1525 Memory recall in mice: https://doi.org/10.1038/nature11028 Partial visual recovery: https://doi.org/10.1038/s41591-021-01351-4 EDITORIAL NOTES On-screen clarifications are included at these timestamps: 13:46 The Jennifer Aniston neuron was recorded in human patients. Selective firing alone did not establish that it causes recognition. 30:34 Vertebrate rhodopsin is a GPCR. In rods and cones, light closes cGMP-gated channels and causes hyperpolarization. 35:12 Xenopus oocytes are immature frog egg cells, not embryos. 39:52 Calcium entry triggers neurotransmitter release; neurotransmitters carry the signal across the synapse. ChR2 conducts several positive ions, not just calcium. 52:17 Halorhodopsin is a light-driven chloride pump, not a channel. 1:03:18 The heart-pacing study expressed ChRmine in mouse heart muscle cells, not neurons. Animal studies and early clinical results are distinguished from established treatments. WATCH & LISTEN Watch this episode: https://youtu.be/PKAYqhy8xf8 Our Nobel predictions: https://open.spotify.com/episode/4xuoH7WhM5svq8vEJPL3Ce Support: https://ffppod.com/donate Contact: https://ffppod.com/contact Follow @FFPPod. Breaking down science news so it makes sense to curious people everywhere.
S1 · E60
October 3 · 40 min
2026 Nobel Prize Predictions: Medicine, Physics & Chemistry (EP 60)
Who could win the 2026 Nobel Prizes? From the science behind Ozempic to quantum interference and droplets inside living cells, Lester Nare and Krishna Choudhary make their picks for Medicine, Physics and Chemistry, and explain the discoveries behind them. In Episode 60 of From First Principles, we explore seven research areas with a case for Nobel recognition: GLP-1, optogenetics, optical coherence tomography, the Aharonov–Bohm effect, atomic force microscopy, biomolecular condensates and Buchwald–Hartwig coupling. We also discuss Michael Berry’s geometric phase and the awkward question of how a prize limited to three people recognizes discoveries built by larger teams. These are our predictions, recorded before the 2026 announcements. Medicine, Physics and Chemistry will be announced October 5–7. Which discovery, and which researchers, would you pick? Tell us in the comments, then join us for our Nobel week breakdowns. CHAPTERS 00:00 The science that could win a Nobel Prize 00:57 Hello Internet: our 2026 predictions 02:03 Medicine: GLP-1 and the science behind Ozempic 07:41 Medicine: optogenetics and controlling neurons with light 13:16 Medicine: optical coherence tomography 16:28 Golden Goose Awards and FFP updates 18:39 Physics: the Aharonov–Bohm effect and geometric phase 27:37 Physics: atomic force microscopy 32:04 Chemistry: biomolecular condensates 36:36 Chemistry: Buchwald–Hartwig coupling 38:42 Your predictions and our Nobel week plans RESEARCH & FURTHER READING Foundational papers and background for the discoveries discussed: GLP-1: Mojsov, Weir & Habener (1987) https://doi.org/10.1172/JCI112855 Optogenetics: Boyden et al. (2005) https://doi.org/10.1038/nn1525 Optical coherence tomography: Huang et al. (1991) https://doi.org/10.1126/science.1957169 Aharonov–Bohm effect (1959) https://doi.org/10.1103/PhysRev.115.485 Berry’s geometric phase (1984) https://doi.org/10.1098/rspa.1984.0023 Atomic force microscopy: Binnig, Quate & Gerber (1986) https://doi.org/10.1103/PhysRevLett.56.930 Biomolecular condensates: Brangwynne et al. (2009); Li et al. (2012) https://doi.org/10.1126/science.1172046 https://doi.org/10.1038/nature10879 Buchwald–Hartwig coupling: Paul et al. (1994); Guram et al. (1995) https://doi.org/10.1021/ja00092a058 https://doi.org/10.1002/anie.199513481 Official Nobel announcement schedule: https://www.nobelprize.org/prizes/about/prize-announcement-dates/ EDITORIAL NOTES 19:30 David Bohm later held a professorship at Birkbeck, University of London (1961–1987); he did not spend the rest of his career in Brazil. 33:23 The ribosome-producing compartment discussed is the nucleolus, not the nucleosome. These corrections also appear on screen. WATCH & EXPLORE YouTube: https://youtu.be/MgOpbh5VUGE Episode page and research library: https://ffppod.com/episodes/ep60 Support: https://ffppod.com/donate Follow @FFPPod on X / Instagram / TikTok / Facebook Breaking down science news so it makes sense to curious people everywhere.
S1 · E59
September 29 · 2 hr 7 min
Golden Goose Awards 2026: The Science Behind the Winners (Part 1) (EP 59)
What connects a noise complaint, holiday lights seen from space, and the physics of a coffee stain? Three unexpected paths from basic research to discoveries with real-world impact. Krishna Choudhary and Lester Nare explore the science behind the 2026 Golden Goose Awards: Zhen Xu's work on histotripsy, NASA's Black Marble nighttime satellite data, and Sidney Nagel's discoveries in soft matter physics. We start with focused ultrasound and the tiny bubbles that can break apart targeted tissue, tracing the journey from early laboratory experiments to clinical research on liver tumors. Then we look at how Earth's nighttime lights reveal power outages, disaster recovery, and changing human activity. Finally, falling drops, coffee stains, and jammed grains open up a world of robotic grippers and materials that can be trained and retrained. The thread connecting all three stories is the unexpected value of federally funded basic research. Part 2 will feature conversations with the award-winning researchers and AAAS CEO Sudip Parikh. CHAPTERS 00:00 Golden Goose Awards trailer 01:19 Introducing our Golden Goose special 02:42 Zhen Xu: From a noise complaint to histotripsy 05:57 The early ultrasound experiments 13:42 Controlling cavitation with microtripsy 20:29 Tumor destruction and the immune response 28:33 Histotripsy through the skull 37:23 The HOPE4LIVER clinical trial 43:55 Why basic research needs time 47:17 FFP updates and supporting the show 49:20 NASA Black Marble: Holiday lights from space 55:29 Turning night lights into reliable data 1:01:36 Hurricane Maria and unequal recovery 1:08:12 COVID-19 and changing nighttime activity 1:10:16 Mapping access to electricity 1:15:20 Where Earth is brightening and dimming 1:32:57 Sidney Nagel and the physics of everyday life 1:37:07 The science of a falling drop 1:46:02 Why coffee leaves a ring 1:51:04 Jamming: When grains become rigid 1:53:35 A robotic gripper filled with grains 1:55:39 Why air pressure changes a splash 1:58:55 Materials that can be trained and retrained 2:03:26 The payoff from curiosity 2:05:29 Coming in Part 2 2:07:06 Outro FEATURED RESEARCH Histotripsy: The #HOPE4LIVER single-arm pivotal trial (Radiology, 2024) https://doi.org/10.1148/radiol.233051 NASA's Black Marble nighttime lights product suite (Remote Sensing of Environment, 2018) https://doi.org/10.1016/j.rse.2018.03.017 Training and retraining liquid crystal elastomer metamaterials for pluripotent functionality (PNAS, 2025) https://doi.org/10.1073/pnas.2504304122 WATCH ON YOUTUBE https://youtu.be/rDInUEtTojg EXPLORE FFP Website: https://ffppod.com Science Funding Tracker: https://ffppod.com/funding Science Transfer Portal: https://ffppod.com/transfers America 250: https://ffppod.com/America250 SUPPORT THE SHOW https://ffppod.com/donate FOLLOW @FFPPod on X / Instagram / TikTok / Facebook
S1 · E58
September 24 · 4 hr 9 min
What OpenAI Actually Did to Navier-Stokes (EP 58)
What does it mean to solve an equation that describes almost every fluid around us, from the air over a wing to the water swirling down a drain? In Episode 58 of From First Principles, Lester Nare and Krishna Choudhary build the Navier-Stokes equations from the ground up before digging into OpenAI’s claimed breakthrough and the debate surrounding it. Summary How Newton’s laws become equations for a moving fluid Velocity fields, incompressibility, pressure and the nonlinear convective term Why viscosity smooths a fluid while nonlinear motion can create finer structure What finite-time blowup means, and why simulation is different from proof How forced and unforced equations differ, and why those assumptions matter Earlier work on Euler, Boussinesq and related fluid equations OpenAI’s claimed result, Lean verification and the scope of the theorem The dispute over scientific credit and the human research behind AI-assisted work The METR investigation of the Hugging Face incident Emergence World and long-running multi-agent experiments AI-assisted biological discovery, oversight and recursive self-improvement Separating demonstrated capabilities from claims and future scenarios Chapters 00:00 Can AI solve Navier-Stokes? 00:34 Episode introduction 02:20 Navier-Stokes: Mathematics Meets AI 10:20 Building the Equations of Fluid Motion 21:34 Velocity fields, divergence and incompressibility 34:33 Acceleration and the convective term 52:18 Why Fluid Motion Is Nonlinear 1:02:08 Pressure, Euler and the Missing Physics 1:14:50 How Viscosity Changes Everything 1:33:36 Solving Equations vs. Simulating Fluids 1:44:59 Can a Smooth Fluid Blow Up? 2:13:52 The Road to the Claimed Breakthrough 2:31:13 Inside the Claimed Navier-Stokes Proof 2:48:26 The Dispute Over Scientific Credit 3:07:23 From Chatbots to Agents 3:08:57 The METR report and Hugging Face incident 3:23:23 AI Risk, Oversight and the Race Ahead 3:38:51 AI Discovery Beyond Mathematics 3:52:47 Why “just turn it off” gets complicated 4:06:47 Closing thoughts and what comes next 4:08:46 Outro Featured Research OpenAI’s Navier-Stokes announcement Tristan Buckmaster’s statement METR investigation Emergence World AI-assisted enzyme discovery Explore FFP ffppod.com ffppod.com/funding ffppod.com/transfers ffppod.com/America250 Watch on YouTube youtu.be/NGfGw1tGxUY Support the show ffppod.com/donate Follow @FFPPod on X / Instagram / TikTok / Facebook
S1 · E57
September 14 · 1 hr 3 min
What’s Next in Science? Nobel Prizes, Space Missions & More (EP 57)
What science should you be watching this fall? From Nobel Prize season to NASA’s Roman Space Telescope, Mars’ moons and Mercury, Lester Nare and Krishna Choudhary take a relaxed tour of the discoveries and missions on their radar. In Episode 57 of From First Principles, we explore why curiosity-driven research matters, what the Golden Goose Awards celebrate, and how questions that once sounded impractical can lead to unexpected breakthroughs. Then we turn to space: Roman’s search for dark energy and exoplanets, JAXA’s Martian Moons eXploration (MMX) mission, and the mysteries ESA and JAXA’s BepiColombo mission will investigate at Mercury. Along the way, we tour the updated FFP website, revisit some favorite episodes, and ask which stories you want us to cover in depth next. A note before we begin: the main conversation was recorded before Labor Day weekend. The opening announcement addresses your requests for a separate episode on OpenAI, Navier–Stokes and the wider AI conversation. This episode is our fall science rundown; that deep dive is still to come. CHAPTERS 00:00 Update on our upcoming Navier–Stokes and AI coverage 03:43 Episode intro and football banter 05:47 FFP intro 06:01 Nobel Prize season and our coverage plans 10:45 Golden Goose Awards: why basic research matters 21:02 FFP website tour and favorite episodes 42:24 Nancy Grace Roman Space Telescope 46:20 Microlensing, exoplanets and dark matter 51:25 MMX: where did Mars’ moons come from? 54:40 BepiColombo and the mysteries of Mercury 1:02:17 Your questions, future deep dives and sign-off 1:05:40 Outro SHOW NOTES NASA’s Nancy Grace Roman Space Telescope: https://science.nasa.gov/mission/roman-space-telescope/ JAXA’s Martian Moons eXploration (MMX): https://www.mmx.jaxa.jp/en/mission/ ESA / JAXA BepiColombo: https://www.esa.int/Science_Exploration/Space_Science/BepiColombo Explore the research and episodes we cover: https://ffppod.com Science R&D Funding Tracker: https://ffppod.com/funding Science Transfer Board: https://ffppod.com/transfers America 250: https://ffppod.com/America250 Support the show: https://ffppod.com/donate WATCH ON YOUTUBE https://youtu.be/snhQh0fjTX4 Follow @FFPPod on X / Instagram / TikTok / Facebook Breaking down science news so it makes sense to curious people everywhere. Which mission or research story deserves a full FFP deep dive? Tell us in the comments.
S1 · E56
September 7 · 1 hr 35 min
The Yak Mutation That Could Help Repair the Brain (EP 56)
What can a yak living thousands of meters above sea level teach us about repairing the human brain? In Episode 56 of From First Principles, Lester Nare and Krishna Choudhary break down a new Neuron paper that traces an evolutionary adaptation found in high-altitude animals to a previously hidden pathway involved in building and repairing myelin. Summary What myelin actually does and why losing it disrupts neural communication How multiple sclerosis damages myelin and why the brain’s natural repair process eventually fails Why oligodendrocyte precursor cells can remain present in damaged tissue without successfully rebuilding myelin Why current therapies are better at slowing further damage than restoring what has already been lost The challenge of getting drugs across the blood-brain barrier while maintaining target specificity How evolutionary pharmacology has previously produced medicines from adaptations found in snakes and Gila monsters The RETSAT Q247R variant identified in animals adapted to the hypoxic environment of the Tibetan Plateau How researchers engineered the high-altitude variant into mice and tested its effect on myelin The surprising discovery that neurons — rather than the myelin-producing cells themselves — generate the key repair signal How RETSAT increases ATDR, which neurons convert into ATDRA How ATDRA activates RXR-γ in oligodendrocyte precursor cells and promotes their differentiation How administration of ATDR promoted remyelination across multiple preclinical models Why the result is scientifically promising but still far from a proven human treatment Featured Paper A gain-of-function Retsat variant from high-altitude adaptation promotes myelination via a neuronal dihydroretinoic acid-RXR-γ pathway Neuron, 2026 DOI: 10.1016/j.neuron.2026.01.013 Explore FFPffppod.comffppod.com/fundingffppod.com/transfersffppod.com/America250 Support the showffppod.com/donate Follow@FFPPod on X / Instagram / TikTok / Facebook
S1 · E55
August 31 · 3 hr 46 min
Why Spin Qubits Will Win the Quantum Race (Part 2) (EP 55)
Which quantum computer will actually scale? In Part 2 of our quantum computing deep dive, Lester Nare and Krishna Choudhary move from theory to hardware—comparing superconducting qubits, trapped ions, neutral atoms, and silicon spin qubits before going inside the new Nature cover paper Krishna co-authored with the HRL Quantum Team and collaborators. The episode begins with a simple question: what makes a good quantum computer? We evaluate each architecture using three criteria: qubit quality, qubit control, and scalability and economics. Superconducting qubits offer extremely fast operations, but scaling them introduces challenges involving microwave control, frequency crowding, cryogenic wiring, physical size, and cooling. Trapped ions preserve quantum information for extraordinary lengths of time, but their slower gates and increasingly complex optical systems introduce a different set of tradeoffs. Neutral atoms can be arranged in dense, reconfigurable arrays using optical tweezers and entangled through Rydberg interactions, while raising questions involving atom loss, correlated noise, readout, and execution time. Then we get to silicon. Beginning with the Loss–DiVincenzo proposal, Krishna explains how individual electron spins can be confined inside semiconductor quantum dots, manipulated through exchange interactions, and measured using single-electron transistors. We then explore exchange-only qubits, where three electron spins encode a single qubit and quantum gates can be performed using electrical control. That leads to the Nature cover paper, A digitally controlled silicon quantum processing unit. The HRL system integrates 18 encoded qubits built from 54 quantum dots with cryogenic control electronics, a superconducting interconnect, automated calibration, and an engineered silicon-germanium heterostructure. Krishna also explains his own work using machine learning to automate quantum-device tuning—an essential problem if spin-qubit systems are ever going to grow from dozens of components to millions. The larger thesis is about manufacturing. The semiconductor industry has spent decades learning how to fabricate silicon devices at enormous scale. If quantum processors can inherit that infrastructure, the architecture that ultimately wins may not be the one that reaches the finish line first—but the one humanity already knows how to manufacture. Nature paper:A digitally controlled silicon quantum processing unitDOI: 10.1038/s41586-026-10754-7https://www.nature.com/articles/s41586-026-10754-7 Explore the FFP Science Transfer Portal:ffppod.com/transfers Support the show:ffppod.com/donate Follow:@FFPPod on X / Instagram / TikTok / Facebook
S1 · E54
August 20 · 2 hr 11 min
How Quantum Computing Actually Works (Part 1) (EP 54)
Quantum computers do not simply “try every answer at once.” So what do they actually do—and why have governments and technology companies spent billions trying to build them? In Part 1 of our two-part quantum computing deep dive, Lester Nare and Krishna Choudhary build the field from first principles. The series was prompted by a new Nature cover paper, A digitally controlled silicon quantum processing unit, co-authored by Krishna and members of the HRL Quantum Team and collaborators. Before getting into that hardware in Part 2, we first need to understand why anyone wanted to build a quantum computer in the first place. We begin with Bell’s theorem and the failure of local hidden-variable explanations of quantum mechanics. From there, we follow the realization that information is fundamentally physical through Rolf Landauer, reversible computation, Charles Bennett, Tommaso Toffoli, Paul Benioff, and the origins of quantum information science. Then Richard Feynman changes the question. Straightforward classical simulation of an interacting quantum system requires tracking a state space that grows exponentially with the number of particles. If nature itself is quantum mechanical, Feynman asks, why not build a computer that is quantum mechanical too? David Deutsch formalizes the universal quantum computer and introduces the first quantum algorithm. Using the Deutsch–Jozsa problem, the double-slit experiment, and Feynman’s path-integral intuition, we explain what a quantum algorithm is actually exploiting: carefully engineered constructive and destructive interference. Finally, we reach the discoveries that turned quantum computing from an academic curiosity into a strategic technology. Daniel Simon develops an early exponential quantum speedup. Peter Shor recognizes how the underlying mathematics can be used to attack problems central to public-key cryptography. Lov Grover follows with a quantum search algorithm—and suddenly governments have a very different reason to care about quantum machines. We also explore quantum money, quantum cryptography, the many-worlds interpretation, Google Willow and parallel-universe headlines, post-quantum security, and what useful quantum computers may ultimately be good for. Part 2: How do you actually build one? Nature paper:A digitally controlled silicon quantum processing unitDOI: 10.1038/s41586-026-10754-7 Link: https://www.nature.com/articles/s41586-026-10754-7 Explore the FFP science funding tracker:ffppod.com/funding Support the show:ffppod.com.com/donate Follow:@FFPPod on X / Instagram / TikTok / Facebook
S1 · E53
August 14 · 1 hr 47 min
What Claude Actually Did to the Riemann Hypothesis (EP 53)
Claude did not solve the Riemann Hypothesis. But what it actually did may be one of the clearest examples yet of how rapidly AI systems are changing the way difficult mathematics can be attacked. In Episode 53, Lester Nare and Krishna Choudhary go from first principles on arguably the most famous unsolved problem in mathematics. We begin with Euler and the Basel problem, build the Riemann zeta function from the ground up, explain its deep connection to prime numbers, move into the complex plane and analytic continuation, unpack the famous 1 + 2 + 3 + 4 + … = -1/12 result, and finally arrive at the Riemann Hypothesis itself: the claim that every non-trivial zero of the zeta function lies on the critical line. Then we get into Claude. An unreleased Anthropic model was prompted to take a serious run at the problem. It orchestrated roughly 60 autonomous sub-agents, tested hundreds of mathematical approaches, executed code, searched academic literature, challenged its own strategies, created adversarial referees to attack its work, and ultimately produced a result pushing a related mathematical bound well beyond the previous state of the art. The human behind the prompt was not a mathematician. One of his instructions was essentially: believe in yourself. We explain what Claude actually accomplished, what it absolutely did not accomplish, why moving a bound toward two-thirds does not mean the Riemann Hypothesis is “two-thirds solved,” and what the process tells us about agentic AI, mathematical research, scientific discovery, and AI safety. Then it’s transfer season. For the first FFP Summer Transfer Window for Scientists, we look at prominent researchers leaving American institutions for universities and research centers abroad. Using the language of football transfers, we examine major moves in chemistry, battery research, gravitational-wave astrophysics, and neuroscience—and what they reveal about research funding, immigration, scientific infrastructure, and the global competition for talent. Explore the FFP science funding tracker:ffppod.com/funding Help shape Year Two and enter the anniversary merch giveaway:ffppod.com/survey Support the show:ffppod.com/donate Follow:@FFPPod on X / Instagram / TikTok / Facebook
S1 · E52
August 6 · 1 hr 47 min
The Amazon’s Hidden Civilization (One Year Anniversary) (EP 52)
In this anniversary episode, Lester Nare and Krishna Choudhary look back at how two longtime friends turned their regular conversations about science into a show now shared by millions of people around the world, and what they hope to build with FFP Nation in Year Two. Then we turn to a new Nature paper challenging the idea that the precolonial Amazon was sparsely populated. Airborne LiDAR revealed hundreds of geometric earthworks hidden beneath the rainforest canopy. Combining the new survey with earlier archaeological evidence, the researchers estimate that the region could contain more than 20,000 earthworks and may have supported 1.25–3 million people around AD 100–300. Lester and Krishna explain how LiDAR sees through dense vegetation, why early European accounts of crowded Amazonian settlements were dismissed, how disease and forest regrowth could erase the visible traces of large societies, and what the findings mean for our understanding of the Amazon’s human and environmental history. The conversation then becomes a thought experiment: if our civilization disappeared, what would future archaeologists—or extraterrestrial visitors—recognize as our pyramids? Apollo landing sites, CERN, LIGO, and the James Webb Space Telescope become candidates for the enduring signatures of a curiosity-driven civilization. Finally, we christen the From First Principles library. Krishna shares the mathematics, physics, biology, history, and philosophy books that shaped how he thinks, including Baby Rudin, Landau–Lifshitz, Fermi, Jackson, Sakurai, Einstein, Schrödinger, Gibbs, Newton’s Principia, Plato, the Upanishads, and Adam Becker’s What Is Real? Help shape Year Two and enter the anniversary merch giveaway: ffpod.com/survey Support the show: ffppod.com/donate Research and show notes: Over 20,000 precolonial earthworks in the Southwest Amazonia Nature Research Briefing FFP episode archive and research library
S1 · E51
July 31 · 1 hr 44 min
The Tech Elon Has Been Waiting For (EP 51)
What happens when electronics can operate at temperatures hot enough to melt aluminum? In this deep-dive episode, Lester Nare and Krishna Choudhary examine a new high-temperature memory device developed by researchers at USC, the Air Force Research Laboratory, Kumamoto University, and their collaborators. Published in Science, the experimental memristor combines tungsten, hafnium oxide, and graphene. It operated reliably at 700°C—roughly 1,300°F—retained data for more than 50 hours, and survived more than one billion switching cycles. We begin by explaining why conventional electronics and flash memory fail when temperatures rise. From deep-earth drilling and hypersonic aircraft to nuclear systems and the surface of Venus, many environments where intelligent electronics would be useful remain inaccessible to today’s hardware. Krishna then builds the memristor from first principles. We explore the history of the “missing” fourth circuit element, how oxygen vacancies create low- and high-resistance memory states, why conventional platinum electrodes fail under extreme heat, and how graphene prevents tungsten atoms from diffusing through the device. Finally, we examine the implications for artificial intelligence. Memristors can potentially store neural-network weights and perform matrix multiplication in the same physical location, reducing the energy wasted moving information between processors and memory. Could that combination of heat tolerance and energy efficiency make AI data centers in space more practical? Lester and Krishna work through thermal radiation, radiator size, power consumption, radiation resilience, and the considerable engineering challenges that remain. Support the showDonate: FFPod.com/donateFollow: @FFPod on X / Instagram / TikTok / Facebook Research and Show Notes High-temperature memristors enabled by interfacial engineering USC: A memory device that operates at 700°C The development of carbon-neutral data centres in space NASA Venus facts
S1 · E50
July 23 · 1 hr 52 min
AI Breaks a 90-Year Math Problem, Life’s Alphabet in Space, and Science Funding (EP 50)
Hosted by Lester Nare and Krishna Choudhary, this episode moves from astrobiology to science policy to the rapidly changing frontier of artificial intelligence and mathematics. First, researchers analyzing pristine samples returned from asteroid Ryugu report all five canonical nucleobases used by DNA and RNA. We explain what that does—and does not—mean for the origin of life, how JAXA’s Hayabusa2 mission collected uncontaminated asteroid material, and why comparisons with NASA’s Bennu samples strengthen the case that prebiotic chemistry may be widespread across the Solar System. Next, we examine the fight over who controls federal research funding. A proposed overhaul of the rules governing federal grants would give political appointees greater influence over awards, reduce the controlling role of expert peer review, and expand the government’s power to stop grants that no longer align with an administration’s priorities. We break down the roles of Congress, OMB, federal agencies, universities, and the courts—and why this dispute could reshape the American research ecosystem. Finally, we go deep on an AI-assisted counterexample to the Jacobian conjecture, a major open problem in mathematics. Krishna explains coordinate transformations, Jacobian determinants, invertibility, special relativity, and why this result appears fundamentally different from simple brute force. We close with the growing debate over AI-generated mathematics, human verification, open science, attribution, and the future role of mathematicians. Summary All five canonical nucleobases found in pristine asteroid Ryugu samples Hayabusa2, Bennu, and the possibility of widespread prebiotic chemistry The fight over political control of federal research grants Congress, OMB, peer review, and the American science-funding system The Jacobian conjecture and an AI-assisted counterexample Special relativity, coordinate transformations, and invertibility AI-generated mathematics, open science, attribution, and verification Support the showDonate: FFPod.com/donateFollow: @FFPod on X / Instagram / TikTok / Facebook Show Notes A complete set of canonical nucleobases in asteroid Ryugu OMB proposed federal-grant rule Association of American Universities response Levent Alpöge’s Jacobian counterexample announcement Leiden Declaration on Artificial Intelligence and Mathematics Human-verified remarks on the OpenAI-generated Erdős result
S1 · E49
July 17 · 39 min
FIFA Data Scientists Explain Match Momentum (EP 49)
In this special interview episode, Lester Nare speaks with Juan Busso, Senior Football Data Scientist at FIFA, and Arron Ackerman, FIFA’s Team Lead for Football Performance Analysis, about the data science behind the Match Momentum visualization featured throughout the 2026 World Cup. What does “momentum” actually mean in football—and how can it be measured without reducing the game to possession or shots? Juan and Arron explain how FIFA translates football principles into mathematical models, validates those models with coaches and technical experts, and turns complex tracking data into a graphic that fans can understand at a glance. We break down the underlying “threat” model, including kinetic pitch control, player speed and acceleration, ball trajectories, defensive spacing, distance to goal, sight lines, and the creation of space. Match Momentum is calculated from player-tracking data captured 50 times per second, allowing the model to recognize when a team is becoming dangerous even without dominating possession. The conversation also covers FIFA’s wider data ecosystem—including event data, skeletal tracking, and the connected match ball—why offside positioning can still create threat, whether hydration breaks alter momentum, and the next generation of football analytics focused on player energy and physical effort. Guests Juan Busso — Senior Football Data Scientist, FIFA Arron Ackerman — Team Lead, Football Performance Analysis, FIFA Support the show Donate: FFPod.com/donate Follow: @FFPod on X / Instagram / TikTok / Facebook
S1 · E48
July 14 · 1 hr 48 min
Black Hole Movies, Digital Heart Twins, and World Cup Tech (EP 48)
Hosted by Lester Nare and Krishna Choudhary, this episode returns to the FFP science rundown with stories spanning astrophysics, precision medicine, medical imaging, artificial intelligence, and World Cup technology. We begin with the Event Horizon Telescope and its evolving view of M87*, the supermassive black hole 55 million light-years away. How do you image something that appears about as small as a donut on the Moon? Krishna explains angular resolution, the Rayleigh limit, radio interferometry, and how telescopes across Earth can function like one planet-sized instrument. We then look at new observations showing the magnetic field around M87* changing over time—and why that may help explain black-hole jets and the mysterious shutdown of star formation in giant elliptical galaxies. Next, we turn to medicine. Researchers at Johns Hopkins have built personalized digital twins of patients’ hearts, allowing doctors to simulate ventricular-tachycardia treatments before entering the operating room. We break down how MRI data, electrical modeling, and virtual ablation could reduce procedures from hours to roughly 30 minutes. We also examine Midjourney Medical’s proposed whole-body ultrasound scanner: what the prototype appears to do, what its creators are claiming, and why it should be viewed as a potential addition to the medical-imaging toolbox rather than a replacement for MRI. Finally, we return to the World Cup. Krishna takes on “Are You Smarter Than a Scientist?” by guessing the most common injuries in professional football. Then we investigate the Norway–England Skycam controversy: did the ball strike a cable, and why did its internal sensor appear not to detect it? We close with the data behind home-field advantage, referee bias, and the natural experiment created by crowdless matches during the COVID-19 pandemic. Support the show Donate: FFPod.com/donate Follow: @FFPod on X / Instagram / TikTok / Facebook
S1 · E47
July 3 · 2 hr 21 min
America 250: The Breakthroughs That Built American Science — Part 2 (EP 47)
Hosted by Lester Nare and Krishna Choudhary, this episode is part two of our July 4th America 250 special: a celebration of the scientific, technological, institutional, and cultural breakthroughs that helped shape the United States into one of the most important scientific nations in human history. In part one, we traced American science from Benjamin Franklin and the founding documents through Sputnik, NASA, DARPA, Bell Labs, the transistor, information theory, nuclear physics, molecular biology, and the birth of the modern American science state. In part two, we pick up after Sputnik and follow the explosion of American science from 1958 to today. This episode covers the visual system, solar wind, perceptrons, impact cratering, pacemakers, neurotransmitter reuptake, cochlear implants, the genetic code, quarks, Bell’s theorem, density functional theory, the fast Fourier transform, immigration policy, electroweak unification, ARPANET, Apollo 11, dark matter, MRI, GPS, Unix, gravitational waves, ozone depletion, lithium batteries, Voyager, RNA splicing, recombinant insulin, quantum computing, the Space Shuttle, prions, PCR, cellular networks, telomeres, laser cooling, backpropagation, the Hubble Deep Field, Deep Blue, Sagittarius A*, cosmic acceleration, the Human Genome Project, CRISPR, mRNA vaccines, reusable rockets, LIGO, transformer models, black hole imaging, quantum supremacy, and the James Webb Space Telescope. The larger story is not just that America produced extraordinary discoveries. It is that those discoveries came from an ecosystem: universities, national labs, government agencies, industrial research labs, immigrant scientists, public investment, basic research, private enterprise, and a culture that repeatedly turned curiosity-driven science into civilization-changing technology. The episode closes by connecting that 250-year legacy to the current debate over federal science funding and the future of American scientific leadership. Explore the interactive timeline ffppod.com/America250 Support the show Donate: FFPod.com/donate Follow: @FFPod on X / Instagram / TikTok / Facebook
S1 · E46
July 2 · 1 hr 50 min
America 250: The Breakthroughs That Built American Science — Part 1 (EP 46)
Hosted by Lester Nare and Krishna Choudhary, this episode is part one of our July 4th America 250 special: a celebration of the scientific, technological, institutional, and cultural innovations that helped shape the United States into one of the most important scientific nations in human history. For America’s 250th anniversary, we built an interactive timeline of the discoveries, inventions, institutions, and funding systems that enabled American science to grow from Benjamin Franklin’s experiments with electricity into the age of NASA, DARPA, Bell Labs, nuclear physics, molecular biology, modern computing, and big science. In part one, we go from Franklin’s discovery of the conservation of charge in 1747 through the Sputnik crisis in 1958. Along the way, we cover the Declaration of Independence, the Constitution’s science and patent clause, the first federal scientific agency, the rise of medical journals, the American system of manufacturing, the telegraph, anesthesia, land-grant universities, the telephone, Edison’s industrial R&D lab, the Michelson-Morley experiment, alternating current, the Wright brothers, the discovery of galaxies, the Manhattan Project, the transistor, information theory, the polio vaccine, the integrated circuit, and the mobilization of American science after Sputnik. This is not just a list of inventions. It is a story about compounding infrastructure: universities, journals, patents, philanthropy, federal agencies, industrial laboratories, war mobilization, immigrant scientists, basic research funding, and the feedback loop between science, technology, government, and culture. Explore the interactive timeline ffppod.com/America250 Support the show Donate: FFPod.com/donate Follow: @FFPod on X / Instagram / TikTok / Facebook
S1 · E45
June 29 · 59 min
The Physics of the World Cup: VAR, Smart Balls, and Soccer Aerodynamics (EP 45)
Hosted by Lester Nare and Krishna Choudhary, this episode is our World Cup special — a deep dive into the science, physics, engineering, and data behind the beautiful game. We start with the offside rule and the controversy around semi-automated VAR. How can a system decide whether a player is onside or offside by only a few inches? Krishna breaks the problem down like an experimental physicist: player speed, ball-contact time, camera frame rate, significant digits, and the error budget behind the line on screen. From there, we get into the actual technology: player tracking, digital twins, high-resolution cameras, and the connected match ball sensor that helps determine when the pass was played. Then we move from refereeing technology to the ball itself. Why does the 2026 World Cup ball look the way it does? How do Platonic solids, panel geometry, and surface seams affect the way a soccer ball flies? And why was the 2010 Jabulani ball so controversial? We go through drag, drag coefficients, wind tunnels, the drag crisis, golf ball dimples, and why the roughness of a ball can completely change its trajectory. Finally, we look at the hidden engineering of the World Cup pitch — real grass in NFL stadiums, LED grow lights, drainage systems, turfgrass science, and even 3D-printed cleat-foot testing devices — before ending with match momentum, possession value, hydration breaks, and the data science behind modern football analytics. Support the show Donate: FFPod.com/donate Follow: @FFPod on X / Instagram / TikTok / Facebook Show Notes Semi-automated offside technology and connected-ball systems Adidas Trionda — official 2026 World Cup match ball Aerodynamics of World Cup balls and the Jabulani drag-crisis controversy World Cup 2026 pitch engineering and turfgrass research Possession value and match momentum in football analytics
S1 · E44
June 26 · 1 hr 37 min
New Rules For Heredity (Non-Mendelian Inheritance of Epigenetics) (EP 44)
Hosted by Lester Nare and Krishna Choudhary, this episode marks Krishna’s return to the studio after paternity leave — and the timing could not be more fitting. Today’s deep dive is about inheritance: not just the classic Mendelian rules most of us learned in biology class, but the stranger, more dynamic world of non-Mendelian epigenetic inheritance. Starting from Gregor Mendel and his pea plants, Lester and Krishna rebuild the foundations of genetics from first principles: dominant and recessive alleles, Punnett squares, chromosomes, fruit flies, DNA, and the physical mechanism behind inherited traits. Then they move into the “software layer” of biology: epigenetics, DNA methylation, chromatin packaging, RNA interference, and paramutation — cases where the genetic code is present, but the cell’s machinery silences or rewrites how that code is used. The episode centers on a new Nature Genetics paper, “Non-Mendelian inheritance of DNA methylation patterns in mice,” which suggests that non-Mendelian epigenetic inheritance may be more widespread in mammals than previously understood. The conversation also covers why Oxford Nanopore sequencing made this kind of analysis possible, why methylation patterns can be hard to trace across generations, and what all of this could mean for disease risk, drug response, sex differences, evolution, and the long-running nature-versus-nurture debate. Summary Mendel’s rules — how pea plants, true-breeding lines, dominant and recessive traits, and Punnett squares gave us the first mathematical laws of inheritance. The first cracks in Mendel — how chromosomes, fruit flies, sex-linked traits, and linked genes showed that inheritance is more complicated than independent assortment. DNA as hardware, epigenetics as software — why having a gene is not the same thing as expressing it, and how methylation and chromatin packaging can silence parts of the genome. Paramutation — how one allele can change the expression state of another allele across generations, creating inheritance patterns that do not follow standard Mendelian expectations. Oxford Nanopore and the technology shift — why long-read sequencing and direct methylation detection make it possible to trace epigenetic marks back to the parent they came from. The mouse methylation paper — how researchers used collaborative cross mice to show that most methylation inheritance looks Mendelian, but a meaningful fraction appears to follow stranger non-Mendelian rules. Why it matters — potential implications for clinical genetics, disease risk, drug efficacy, sex-specific biology, and the relationship between nature and nurture. Support the show Donate: FFPod.com/donate Follow: @FFPod on X / Instagram / TikTok / Facebook

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