Dormant Knowledge

Dormant Knowledge

Welcome to Dormant Knowledge, a podcast designed to feed your curiosity while lulling you to sleep. In each episode, we'll take you on a journey through an interesting topic, delivered at a pace that hopefully helps your mind slow down and your eyes grow heavy.

  1. Episode 14: Leap Years, Lost Days, and the Quest to Count Time

    12/29/2025

    Episode 14: Leap Years, Lost Days, and the Quest to Count Time

    Why do we lose days when calendars change? How did ancient Romans accidentally mess up leap years for decades? And what exactly is a leap second? As we approach another New Year, join Deb for a gentle journey through humanity's long quest to organize time. From the ancient Egyptians' beautifully simple 365-day calendar to the Mayans' multiple overlapping systems, from Julius Caesar's elegant reform to Pope Gregory's controversial fix that made ten days vanish from history. Discover why September is the ninth month when "septem" means seven, how the Islamic calendar cycles through all the seasons, and why computer programmers have nightmares about leap seconds. Learn about the Hebrew calendar's intricate 19-year cycle, Ethiopia's calendar that's 7-8 years "behind" ours, and Samoa's decision to simply skip December 30, 2011. We'll explore the surprisingly complicated calculation of Easter's date, the Y2K bug that wasn't quite as overblown as people thought, and why Britain rioted (maybe) when they lost eleven days in 1752. Plus: calendar reform proposals that would give us identical quarters or 13-month years, and why we'll probably never adopt them. Perfect bedtime learning about the systems that structure our lives—delivered in Dormant Knowledge's signature relaxing style. Topics covered: Egyptian, Babylonian, Mayan, Chinese, and Roman calendar systemsWhy our month names don't match their numbersJulius Caesar's reform and the Julian calendarThe Gregorian calendar reform of 1582Islamic, Hebrew, Persian, and Ethiopian calendars still in use todayThe complicated rules of leap years (and why 2000 was special)Leap seconds and why they crash computer systemsThe International Date Line and its quirksFailed calendar reform proposals throughout historyWhether you drift off after ten minutes or stay awake through the whole episode, you'll come away with a deeper appreciation for the intricate systems humans have created to measure our journey through time. Dormant Knowledge is the educational sleep podcast for curious minds. Learn something fascinating while you fall asleep.

    55 min
  2. Episode 13: Fires in the Darkness: A Journey Through Winter Solstice

    12/15/2025

    Episode 13: Fires in the Darkness: A Journey Through Winter Solstice

    Journey through humanity's oldest celebration as we explore winter solstice traditions from around the world. In this peaceful episode perfect for falling asleep, discover how ancient cultures marked the longest night of the year—and why their rituals still resonate today. What is the winter solstice? It's that precise astronomical moment when the Northern Hemisphere tilts furthest from the sun, giving us our longest night and shortest day. But for thousands of years, it's meant so much more than just a date on the calendar. It's been a time of hope, celebration, and the promise that light will return. We'll visit the 5,000-year-old passage tomb at Newgrange in Ireland, where the rising sun illuminates a dark chamber for just 17 minutes on solstice morning. We'll explore Stonehenge and the evidence of massive midwinter feasts held 4,500 years ago. We'll discover how the Germanic peoples celebrated Yule with evergreens and Yule logs—traditions that survive in modern Christmas celebrations. Travel to ancient Rome for Saturnalia, when social rules were turned upside down and masters served their slaves. Experience the Persian festival of Yalda, where families gather to read poetry and eat pomegranates through the longest night. Learn about Chinese Dongzhi, when families reunite to make and share tangyuan dumplings, and Japanese Toji, where people soak in yuzu-scented baths for good health. Along the way, we'll explore why humans across vastly different cultures developed remarkably similar responses to this astronomical event: lighting fires, decorating with evergreens, feasting together, and creating rituals around the return of light. We'll discover how many Christmas traditions—from decorated trees to gift-giving to festive meals—have their roots in ancient solstice celebrations. This episode is designed to be both genuinely educational and deeply relaxing. Whether you listen all the way through or drift off somewhere in the middle, you'll absorb fascinating stories about how our ancestors understood the cosmos, marked time, and found hope in the darkest season. Perfect for curious minds who want to learn while falling asleep. Episode Length: ~49 minutesTopics: Winter solstice, ancient astronomy, cultural traditions, Yule, Saturnalia, Newgrange, Stonehenge, seasonal celebrations, history of Christmas Find more episodes at dormantknowledge.comFollow us: @dormantknowledge (Instagram/Facebook) | @drmnt_knowledge (X)

    49 min
  3. Episode 12: Where Roads Cross: The Hidden Engineering of Highway Interchanges

    12/01/2025

    Episode 12: Where Roads Cross: The Hidden Engineering of Highway Interchanges

    Ever wondered about those massive concrete structures where highways loop, merge, and stack on top of each other? Tonight, we're exploring the surprisingly fascinating world of highway interchanges—the engineering marvels you've driven through hundreds of times without a second thought. Discover the elegant cloverleaf designs of the 1920s, the towering five-level stacks of modern cities, and the innovative diverging diamond interchanges that briefly move you to the "wrong" side of the road. Learn why early traffic engineers faced a critical problem: how to let high-speed traffic cross paths without anyone stopping, and why their solutions—from New Jersey's pioneering cloverleafs to Los Angeles's billion-dollar spaghetti junctions—shaped American cities and suburbs. We'll explore the "weaving problem" that plagued early designs, the controversial legacy of builder Robert Moses, and what the future holds for these monuments to automobile culture in an era of autonomous vehicles and changing transportation priorities. Perfect for curious minds who love learning about the hidden complexity of everyday infrastructure. Settle in and drift off as we unravel the loops, levels, and logic of highway interchanges. Dormant Knowledge is the educational sleep podcast for curious minds. Learn something fascinating while you fall asleep. Visit dormantknowledge.com | Follow @dormantknowledge (Instagram/Facebook) or @drmnt_knowledge (X)

    54 min
  4. Episode 9: The Quantum Century

    10/20/2025

    Episode 9: The Quantum Century

    Journey into the strange and revolutionary world of quantum physics, where particles behave like waves, cats exist in multiple states at once, and the very act of observation changes reality. In this episode of Dormant Knowledge, the educational sleep podcast for curious minds, host Deb explores the Quantum Century, the remarkable era when physicists upended everything we thought we knew about the universe. From Max Planck's desperate solution to a stubborn physics problem in 1900, to Einstein's Nobel Prize-winning explanation of light, to Niels Bohr's impossible atom, discover how quantum mechanics emerged from a series of bewildering experimental results that refused to make sense. What You'll Learn: ✨ How Max Planck accidentally launched quantum theory while trying to explain why heated objects glow the colors they do ✨ Why Einstein's photoelectric effect (not relativity) won him the Nobel Prize, and what it revealed about the nature of light ✨ The mind-bending double-slit experiment that proved light and matter can be both particle and wave simultaneously ✨ How Niels Bohr created an atomic model where electrons make impossible quantum leaps between energy levels ✨ The famous Einstein-Bohr debates that questioned the very nature of reality ✨ Schrödinger's cat and what this thought experiment reveals about quantum superposition ✨ Heisenberg's uncertainty principle and why we can never know everything about a particle ✨ How quantum entanglement creates "spooky action at a distance" that troubled Einstein ✨ The Copenhagen interpretation and what it means that observation collapses quantum possibilities into reality This episode gently guides you through the revolutionary discoveries of Planck, Einstein, Bohr, Heisenberg, Schrödinger, and others who transformed our understanding of the atomic world. Learn about the famous Solvay Conferences where the greatest minds in physics gathered to debate these strange new ideas, the thought experiments that challenged our intuitions, and why quantum mechanics, despite its philosophical puzzles, remains the most successful scientific theory ever created. Perfect for falling asleep while absorbing fascinating physics, understanding the foundations of modern technology, or simply wondering about the strange quantum world underlying everything we see. Whether you drift off somewhere in the middle or make it to the end, you'll come away with a deeper appreciation for the quantum revolution that defined the 20th century and continues to shape our 21st. Dormant Knowledge: Where curiosity meets sleep, and learning happens in the spaces between waking and dreaming. dormantknowledge.com @dormantknowledge (Instagram/Facebook) | @drmnt_knowledge (X)

    59 min

Trailer

About

Welcome to Dormant Knowledge, a podcast designed to feed your curiosity while lulling you to sleep. In each episode, we'll take you on a journey through an interesting topic, delivered at a pace that hopefully helps your mind slow down and your eyes grow heavy.