No matter what you ate for dinner, something about lying in bed makes you feel hungry again. In this calm, slow episode of Boring Facts, you’ll listen to hundreds of quiet facts about why we get hungry at night, from that familiar late-night craving that seems to arrive on its own to the long, quiet history of how humans have eaten after dark across centuries and cultures. You’ll hear about the hormone that rises in your stomach every evening whether you need more food or not, and why your brain finds it so much harder to say no to a snack at eleven at night than at eleven in the morning. There are facts about what happens inside your body in the hours after dinner, why nighttime cravings almost always lean toward toast or cereal instead of salad, and how mice in a lab helped scientists understand that when you eat may matter as much as what you eat. You’ll learn that medieval monks kept bread near their beds, that the Romans had a word for their late-evening course, and that the Japanese tradition of late-night ramen is more than a century old. There is nothing to remember and nowhere to be. You can simply listen, rest, and let the facts keep going long after you stop following them.

Most people have stood near a pond and watched a duck glide past without ever wondering how its feathers stay dry or why it bobs its head when it walks. In this calm, slow episode of Boring Facts, you’ll listen to hundreds of quiet facts about ducks, from the familiar mallard floating on a park pond to the older corners of duck history and the lesser-known species most people never hear about. You’ll hear how a small gland near the tail produces the oil that keeps every feather waterproof, and why the edges of a duck’s bill work like a tiny comb to filter food from muddy water. There are facts about the way ducklings imprint on the first moving thing they see, how some ducks sleep with one eye open, and why a duck’s feet can stand on ice without ever feeling cold. You’ll learn how far certain species fly during migration, how ducks were first domesticated thousands of years ago in Southeast Asia, and why the familiar quack only comes from females. There is nothing to remember and nowhere to be. You can simply listen, rest, and let the facts keep going long after you stop following them.

The James Webb Space Telescope is essentially a very large, very cold mirror sitting a million miles from Earth, quietly collecting light that left its source billions of years ago — and most of what it finds is not dramatic at all, just one careful measurement after another. In this calm, slow episode of Boring Facts, you’ll listen to hundreds of quiet facts about the James Webb Space Telescope, from how its gold-coated beryllium mirrors were polished to the shape they would need after shrinking in the cold of space to the long patient work of turning raw data into understanding. You’ll hear how each of the 18 hexagonal mirror segments weighs about as much as a medium suitcase, how the sunshield’s five layers of Kapton block all but 23 milliwatts of the Sun’s 200-kilowatt glare, and how the telescope unfolded over 344 ground-commanded steps across 30 days without a single failure. There are facts about the first carbon dioxide ever confirmed in an exoplanet atmosphere, about galaxies that appeared far too massive for their age, and about a water plume from a tiny moon of Saturn that was captured in just four and a half minutes of data. You’ll learn that the telescope was originally expected to cost one billion dollars and launch in 2007, and that the gold on all 18 mirror segments weighs about as much as a golf ball. There is nothing to remember and nowhere to be. You can simply listen, rest, and let the facts keep going long after you stop following them.

Tonight you can simply press play and let nine hours of quiet, unhurried facts carry you through the whole night. This collection brings together five full episodes of Boring Facts, beginning with why your body wakes you up in the middle of the night, moving through hundreds of calm details about cows, the quiet daily life of samurai, the strange sensation of déjà vu, and the slow, translucent world of jellyfish. You will hear about sleep cycles and body temperature, the way cows always know which direction is north, why samurai spent years learning how to arrange flowers, how your brain briefly misfires a memory before you have finished making it, and how some jellyfish drift through the ocean without a brain, a heart, or a single bone. Each episode flows into the next with no repeated introductions or interruptions. There is nothing to remember and nowhere to be. You can simply listen, rest, and let the facts keep going long after you stop following them.

Every building you have ever walked into was shaped by thousands of small, quiet decisions — how thick to make a wall, where to place a window, which direction to face a door — and most people pass through them every day without noticing any of it. In this calm, slow episode of Boring Facts, you’ll listen to hundreds of quiet facts about architecture, from the simplest foundations and load-bearing walls to the hidden acoustics, heating systems, and engineering buried inside modern buildings. You’ll hear about why bricks are staggered so the joints never line up, how a French gardener’s broken flowerpots led to reinforced concrete, why the Pantheon’s dome has lasted nearly two thousand years, and how a 730-tonne gold pendulum keeps a skyscraper in Taipei from swaying. There are facts about the oldest door still in use, how crown glass was spun into wobbly sheets, why Gothic cathedrals could suddenly have enormous windows, and what happens inside a building’s walls when the temperature drops at night. There is nothing to remember and nowhere to be. You can simply listen, rest, and let the facts keep going long after you stop following them.

Every night, in ponds, ditches, and wet grass all over the world, frogs begin calling, and most people never think about why or how many thousands of species are doing it at the same time. In this calm, slow episode of Boring Facts, you’ll listen to hundreds of quiet facts about frogs, from how they produce their calls to the ancient fossil record that stretches back hundreds of millions of years. You’ll hear about how a frog’s eardrum sits flush against the side of its head, why some species carry tadpoles on their backs, and what happens inside a wood frog’s body when it freezes solid in winter. There are facts about the tiny golden poison frog whose skin holds enough toxin to fill a medical textbook with warnings, and about the common garden toad that simply sits in one spot for an entire evening waiting for a beetle to walk past. You’ll learn why a frog sheds its skin and then eats it, how glass frogs became see-through, and what Galvani accidentally discovered about electricity while studying frog legs in a Bologna laboratory. There is nothing to remember and nowhere to be. You can simply listen, rest, and let the facts keep going long after you stop following them.

Almost every night, your body cycles through the same quiet stages of sleep, and almost every night, something small pulls you back to the surface for a moment before you settle again. In this calm, slow episode of Boring Facts, you’ll listen to eight hours of quiet facts about blankets, sheep, snoring, pillows, tossing and turning, pandas, getting cold at night, cows, and why we wake up in the middle of the night, from the warmth of wool fibers to the slow tick of your circadian clock. You’ll hear about how sheep recognize up to fifty human faces, why one nostril closes while you sleep, the four stomachs a cow uses to break down a single mouthful of grass, and how your body temperature drops by about two degrees every night whether you notice it or not. There are facts about the oldest known blanket fragment, about Roger Ekirch’s research into the lost habit of sleeping in two shifts, about why pillows go flat, and about the small hormone that decides when your night is over. None of it requires any attention or any particular order. There is nothing to remember and nowhere to be. You can simply listen, rest, and let the facts keep going long after you stop following them.

In this calm and deliberately boring episode, you’ll listen to hundreds of quiet facts about why we wake up in the middle of the night — from the ordinary mechanics of sleep cycles and their predictable vulnerable windows, to the small biological reasons your body pulls you back to consciousness at three in the morning. You’ll hear about Roger Ekirch’s research into biphasic sleep and how people once spoke casually of a “first sleep” and a “second sleep” with a quiet waking hour in between, about the role of antidiuretic hormone and why trips to the bathroom increase with age, about noise thresholds that shift from one sleep stage to the next, and about the circadian trough that bottoms out in the hours before dawn. There are facts about knocker-uppers who tapped on factory workers’ windows until the nineteen-seventies, about the glymphatic system that flushes waste from the brain only during sleep, about cortisol that begins rising hours before your alarm, and about melatonin whose half-life quietly determines when your body decides the night is over. Most of these details are the kind of thing you would never think to look up, and none of them require any particular attention. Tonight, as you listen, you can simply rest inside the thought that even the most ordinary subject contains more quiet details than anyone could ever notice at once.