

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.
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.
Episodes
Mentioned books

38 snips
Feb 4, 2026 • 1h 10min
Artemis II, Apollo, and the Physics of Going Back to the Moon (EP. 24)
They walk through Artemis II mission mechanics, including translunar injection, free-return trajectories, and Orion’s high Earth orbit checkout. They compare SLS and Saturn V engineering and political trade-offs. They debunk Apollo hoax claims about radiation belts, flags, shadows, and missing stars. They highlight physical proofs like retroreflectors and orbital imagery.

27 snips
Jan 27, 2026 • 1h 41min
JWST’s “Little Red Dots,” TimeVaults, and the Dawn of Math (EP. 23)
They unpack JWST’s puzzling compact “little red dots” and a cocoon model that reshapes how we interpret early black holes. A novel TimeVault technique for archiving cellular RNA over days gets covered, with implications for recording biological histories. Ancient Halaf pottery motifs that may encode geometric doubling sequences spark a debate about early mathematical thought. A brief Cloud9 naming follow-up closes the show.

19 snips
Jan 20, 2026 • 1h 40min
Cloud9 Dark Matter Halo, Jellyfish Sleep, and String Theory Hidden in Nature (EP. 22)
Dive into the fascinating crossover between string theory and natural networks, revealing how biology may follow mathematical rules. Explore the surprising finding that jellyfish need sleep for DNA repair, reminding us that even simple life forms have complex needs. Uncover the mystery of Cloud9, a starless gas cloud that could be harboring dark matter, shedding light on the universe's elusive structures. Plus, a roundup of iron asteroids and advancements in cellular therapies and exoplanet research!

41 snips
Jan 12, 2026 • 1h 59min
Roman Concrete, Brain “Cognitive Legos,” DeepSeek, and Econophysics (EP. 21)
Explore the secrets of ancient Roman concrete and its astonishing self-healing properties uncovered at Pompeii. Dive into the concept of cognitive LEGOs, where our brains assemble thoughts using shared neural blueprints. Discover DeepSeek's groundbreaking techniques for stabilizing AI networks through manifold constraints. Finally, unravel how the square-root law of market impact reveals universal patterns across markets, offering insights into financial systems that persist across time and stocks.

Dec 23, 2025 • 1h 18min
The Physics Behind Fusion’s Biggest Problem (Season Finale) (EP. 20)
Hosted by Lester Nare and Krishna Choudhary, this Season Finale closes out Season 1 with a deep dive into the physics behind fusion’s biggest bottleneck: fast magnetic reconnection. We unpack why classic models predicted reconnection should be slow, why nature (and tokamaks) disagree, and how modern “plasmoid” reconnection helps explain solar flares, plasma instabilities, and the real engineering challenges fusion reactors face. Then we run a full Season 1 recap — our favorite episodes, biggest scientific moments, and the corrections and lessons we’re taking into Season 2.SummaryFusion’s biggest problem — magnetic reconnection, why the Sweet–Parker model breaks down at scale, and how plasmoid instability enables fast reconnection.From the Sun to tokamaks — how reconnection drives solar flares, space weather, and plasma confinement limits in fusion devices.Season 1 leaderboard — our top episodes and the breakthroughs that stuck: astronomy, biology, AI, quantum, and the history of science.Corrections + what’s next — what we fixed, what we learned, and how Season 2 evolves the format.

Dec 4, 2025 • 1h 34min
The Race to the Double Helix — Watson, Crick, Franklin & the Real Story of DNA (EP. 19)
Hosted by Lester Nare and Krishna Choudhary, this single-story deep dive tells the full story of how humanity uncovered the structure of DNA — and the human tensions that shaped it. From Mendel’s pea-plant mathematics to Rosalind Franklin’s groundbreaking x-ray crystallography, from Cavendish–King’s College rivalries to the famous Photo 51, this episode follows the scientific and ethical arc behind one of the most important discoveries in modern biology.SummaryBefore DNA — Mendel’s inheritance laws, Miescher’s nuclein, Levene’s early models, and why scientists initially believed proteins carried heredity.The turning point — Griffith’s transformation experiment and the Avery–MacLeod–McCarty proof that DNA is the genetic material.The physics connection — Schrödinger’s What Is Life? and the idea of an “aperiodic crystal” inspiring Watson, Crick, and a generation of physicists to enter biology.Two labs, one race — Cavendish vs. King’s College, Wilkins vs. Franklin, and the clash of personalities, methods, and interpretations.Photo 51 — Franklin and Gosling’s pivotal diffraction image revealing the helical structure of DNA.The model — base pairing, antiparallel strands, and why the double helix immediately explained replication.Recognition & legacy — the 1953 Nature papers, the 1962 Nobel Prize, Franklin’s omission, and Watson’s later controversies reshaping his legacy.Show NotesMendel (1866) — Pea Plant GeneticsGriffith (1928) — TransformationAvery–MacLeod–McCarty (1944)Schrödinger — What Is Life?Franklin’s Photo 51Watson & Crick (1953)

Nov 27, 2025 • 1h 28min
3I/ATLAS Explained, Forensic Fingerprints & Alzheimer’s Breakthrough (EP. 18)
Dive into the fascinating world of astrophysics with the discovery of 3I/ATLAS, the third interstellar object captured by NASA. Uncover a groundbreaking forensic method from Maynooth University that retrieves fingerprints from fired bullet casings, potentially solving cold cases. Finally, explore a groundbreaking finding in Alzheimer’s research, revealing a microglial state that might reshape our understanding of the disease and its treatment. This mix of science, crime-solving, and medical breakthroughs is truly riveting!

Nov 22, 2025 • 1h 33min
Hypersonic Physics, Deep Sea Life & Princeton’s Millisecond Qubits (EP. 17)
Hosted by Lester Nare and Krishna Choudhary, this episode dives into three breakthroughs stretching across aerospace engineering, astrobiology, and quantum computing. We start with a Nature Communications paper from Stevens Institute that experimentally validates a 60-year-old hypothesis underpinning hypersonic flight modeling. Then we head 3,000 meters below the Pacific to explore a newly discovered cold, ultra-alkaline biosphere near the Mariana forearc — a finding that reshapes the search for extraterrestrial life. And we close with Princeton’s millisecond-coherent transmon qubit, a materials science triumph pushing the quantum hardware frontier toward real-world quantum advantage.SummaryHypersonics without supercomputers — Stevens Institute validates the Morkovin hypothesis up to Mach ~6 using krypton-tagging velocimetry, confirming that “simple” turbulence models still work in hypersonic regimes and opening the door to viable, inexpensive hypersonic aircraft design.Life where it shouldn’t exist — University of Bremen researchers uncover evidence of a chemosynthetic biosphere in the cold, pH-12.6 serpentinizing fluids of the Mariana forearc, offering the clearest Earth analog yet for Enceladus- and Europa-like conditions.A millisecond qubit breakthrough — Princeton’s tantalum-on-high-resistance-silicon transmon hits 1.7 ms coherence, 15× the industry norm — drop-in compatible with Google/IBM architectures and a major step toward practical quantum computing.Show NotesHypersonics — Nature Communications (Stevens Institute)Deep Sea Life — Nature Communications Earth & Environment (Univ. of Bremen)Princeton Millisecond Qubit — Nature (Transmon Hardware)

Nov 13, 2025 • 1h 18min
Octopus Camouflage, Orcas vs. Sharks, Civet Coffee & Sub-Diffraction Telescope Tech (EP. 16)
Hosted by Lester Nare and Krishna Choudhary, this super-episode spans four wildly different frontiers: bioengineers hijacking bacterial evolution to mass-produce octopus camouflage pigment; orcas developing cultural hunting strategies against great white sharks; the bizarre chemistry behind civet-processed luxury coffee; and a UCLA breakthrough that pushes telescope resolution beyond the classical diffraction limit.SummaryUCSD’s biosynthesis breakthrough — how researchers engineered a growth-coupled, plug-and-play metabolic pathway to mass-produce xanthomatin, the cephalopod pigment behind octopus camouflage.Orca vs. shark culture wars — first-ever documentation of coordinated predation on juvenile great whites in Mexican waters, plus how whales transmit learned behavior socially.The paradox of civet coffee — wild civet gut chemistry, medium-chain esters, and how microbial fermentation creates the world’s most expensive “biologically processed” coffee.UCLA’s telescope hack — a mode-sorting instrument that extracts phase information from starlight, enabling sub-diffraction-limited imaging and revealing asymmetric hydrogen disks around distant stars.Show NotesUCSD — Nature Biotechnology (xanthomatin biosynthesis)Orca Predation Study — Frontiers in Marine ScienceCivet Coffee Chemistry — Nature Scientific ReportsUCLA Sub-Diffraction Telescope Method — ApJ Letters

Nov 6, 2025 • 2h 4min
AI-Generated Genomes, Retinal Implants, and Palomar’s Mystery Lights Explained (EP. 15)
Discover groundbreaking advancements in healthcare and astronomy! Explore how AI-generated synthetic cancer genomes promise privacy protection while enhancing precision oncology. Learn about a revolutionary retinal implant that aims to restore vision for those with advanced macular degeneration. Delve into cosmic mysteries with a fresh analysis of Palomar’s photographic plates, revealing new insights into transient events. This engaging journey intertwines cutting-edge science with captivating possibilities for the future!


