The episodes
Every night, a world.
63 episodes so far, newest first, and the catalog is always growing. Each one has a guide: the science inside it, questions to wonder about together, and a calm-down for tonight.
- WonderSearch by question
- Big IdeasFollow one idea through many nights
- The SkySee every night at once
- Follow a threadOne path through all sixty
- CollectionsBrowse by topic
63 episodes
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Lighthouses
The light that comes back around
At the edge of the ocean, in the dark, there is a tall stone building with a room of glass at the top, and inside that room a light that goes around.
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10 min
Rainforest
The river above the trees
Rain falls on the Amazon, soaks into the ground, and is drawn up through the trunks of enormous trees.
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9 min
Bridges
Strong because they move
Every bridge moves.
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11 min
Octopus
A brain in every arm
An octopus is one of the strangest and cleverest animals in the sea: three hearts, blue blood, no bones at all, and skin that can change color in a heartbeat.
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11 min
Sand
The long journey to the beach
A handful of beach is a handful of tiny journeys.
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11 min
Jupiter
A world made of sky
Earth is a ball of rock wrapped in a thin coat of air.
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11 min
Floating Ships
Why the heaviest things rise
A ship can be as heavy as a mountain and still ride on top of the sea, as though the water had been waiting to hold it up.
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9 min
Sea Turtles
The map inside her
A mother sea turtle crosses an entire ocean, then finds her way back to the beach where she hatched.
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13 min
Thunder & Lightning
The sky's electric lullaby
Storms sound big because the sky is big.
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11 min
Fireworks
The earth painting the sky
Every firework is a bit of earth, ground into powder, lifted into the dark, and returned as color.
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8 min
Oxygen
Where every breath begins
Every breath you take was made by something green, and much of it came from the sea.
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8 min
The Sun
Anchor of the solar system
The sun holds eight planets steady without touching a single one.
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9 min
Electricity
The copper highway
Inside the walls of your home runs a quiet copper highway.
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9 min
Genes & DNA
What makes you... you
Inside almost every one of your cells is a curled-up letter written in a four-letter alphabet.
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10 min
Farm Tractors
A field of dreams
A tractor does big work slowly, and that is the secret of the whole farm.
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10 min
Sea Otters
Held by the water
Sea otters sleep floating on their backs, sometimes holding hands so no one drifts away.
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9 min
Friendship
The science of closeness
A hug can slow a heartbeat; a familiar voice can loosen a worry.
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9 min
Fireflies
The light that waited
A firefly's glow spends years underground before it ever rises.
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9 min
Clouds
The shape water borrows
A cloud is a river that has not landed yet.
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17 min
Dinosaur Fossils
How scientists tell time
A fossil is a bone that learned to be a stone, and a stone that remembers.
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9 min
The Chunnel
A train ride beneath the sea
Under the water between England and France runs a tunnel where trains hum through the chalk.
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12 min
Sixteen Sunrises
A day aboard the space station
The astronauts overhead ride one long fall around the Earth, and morning comes to them sixteen times a day.
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11 min
Sharks
Replacing fear with wonder
Sharks are older than trees and calmer than their reputation.
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11 min
Hibernation
The science of slowing down
A hibernating animal turns itself down like a lamp: heartbeat, breath, and hunger all dimmed for winter.
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10 min
Feelings
Where your feelings live
Feelings are real events in the body: weather made of chemistry and heartbeat.
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12 min
Caves
The sculptures of water
Under some hills there are rooms no one built, carved by water one drop at a time.
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11 min
Bioluminescence
Nature's living light
In the deep sea and on warm beaches, some living things carry their own light.
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11 min
Dolphins
Riding the waves
Dolphins name themselves with whistles and sleep with half a brain at a time.
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15 min
Shooting Stars
Wishes on ancient dust
A shooting star is a grain of ancient dust, ending a journey of millions of years in one bright second over your house.
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13 min
Black Holes
The deep rivers of space
Far away, space itself pours quietly toward places of enormous gravity.
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11 min
Aurora
A crown of gentle light
When the sun sends sparkles across space, Earth's invisible shield catches them and turns them into slow curtains of light.
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11 min
Bees
The journey home
A honeybee visits a thousand flowers and still finds the one door of her hive.
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9 min
The Water Cycle
The journey of a droplet
The water in your cup has been a cloud, a river, an ocean, and rain, many times over.
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7 min
Axolotls
The super-healing smilers
The axolotl is a salamander that never grows up and can regrow almost anything it loses.
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5 min
Earth Day
The slow world
One day a year, we say thank you to the only planet with pillows.
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10 min
Smell
Where memories wait
A smell can carry you to a kitchen from years ago before you can even name it.
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16 min
Tides
How the moon moves the sea
Twice a day, the ocean breathes in and out, pulled by a moon it has never touched.
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12 min
Steam Train
The rhythm of sleep
A steam train is a kettle with wheels and a heartbeat.
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10 min
Moon Phases
Why the moon changes shape
The moon never changes shape; the light on it does.
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11 min
Whale Songs
The ocean's lullaby
In the deep, humpback whales sing songs that travel farther than any voice on land.
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10 min
Monarch Butterflies
The living relay
No single monarch flies the whole round trip; the journey is a relay passed between generations.
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11 min
Volcanoes
How the earth breathes
Volcanoes are the Earth's slow, quiet breath: warmth from deep inside, rising patiently, making new land.
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13 min
Artemis II
Journey to the moon and back
Four astronauts loop around the moon and look back at everything anyone has ever loved.
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10 min
Touch
The oldest sense
Before you could see or hear, you could feel.
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14 min
Rainbows
Where colors wait
White light carries every color everywhere it goes; rain just lets them show.
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11 min
Saturn
A circle made of pieces
Saturn's rings look solid from far away, but they are billions of separate pieces of ice traveling together.
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11 min
Hearing
The science of sound waves
Every sound you have ever heard was air, gently pushed.
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12 min
Seeds
The secret life underground
A seed is a packed suitcase, patient in the dark, waiting for the right knock of warmth and water.
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11 min
Garbage Trucks
The physics of quiet strength
Before you wake, someone strong and slow makes the street clean again.
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12 min
Nebula Nurseries
How stars are born
Stars are born in vast, cold clouds that take millions of years to fall inward into light.
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13 min
Mariana Trench
The deepest place on Earth
The ocean has a valley deeper than Everest is tall, where the water is calm, cold, and totally dark.
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10 min
Spiders
Tiny architects
Every night, small architects rebuild bridges and wheels out of silk stronger than steel by weight.
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7 min
Hippos
The science of sinking
Hippos are too dense to float, so they do something better: they walk along the river bottom, slow as astronauts.
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16 min
Airplane Turbulence
The sky's rockabye
Turbulence is the sky's texture: air with bumps in it, like a road with pebbles.
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13 min
Crystals
The physics of stillness
A crystal is what atoms build when nothing disturbs them: perfect rows, repeated patiently.
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13 min
Sleep
The nightly tide
Sleep is not an off switch; it is a tide that comes in stages, washing and tidying as it rises.
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10 min
Sight
How the world gets inside your head
Light bounces off everything and pours through two small windows, and your brain builds the whole world from it.
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11 min
Capybaras
The masters of stillness
The world's largest rodent is also its most relaxed.
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12 min
Snowflakes
Winter's quiet blanket
Every snowflake is a six-sided diary of the cloud it fell through.
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12 min
Taste
A journey down the river of flavor
Dinner is chemistry you are allowed to enjoy.
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10 min
Winter Solstice
Why it is cold in winter
The longest night of the year is a hinge: from here, the light comes back a little every day.
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15 min
Bats
Masters of the dark
Bats fly through total darkness by singing into it and listening for the shape of the echo.
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14 min
The Falling Leaves
Summer's soft farewell
A tree does not lose its leaves; it lets them go, on purpose, with a little goodbye built at each stem.
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