Deep Dive21 minMake and doWhere colors come from
Rocks, a bug, a snail, a cave and the first box of crayons: where our colors came from.
Ages 4 to 6 · Make and do
Deep Dive20 minOur bodiesYour teeth, from first tooth to last wobble
Why baby teeth wobble, what is growing underneath, and how to keep the new ones strong.
Ages 4 to 6 · Our bodies
Deep Dive21 minMake and doWhere pizza comes from
Wheat, tomatoes, milk and a very hot oven: how every part of a pizza gets to the plate.
Ages 4 to 6 · Make and do
Deep Dive26 minMachinesWhere your trash goes
Follow a bag of trash from the curb through trucks, sorting machines and the landfill.
Ages 4 to 6 · Machines
Deep Dive22 minOceanSea otters: the animal that saved a forest
How a furry animal that eats sea urchins keeps a whole underwater forest alive.
Ages 6 to 8 · Ocean
Deep Dive29 minAnimalsA year inside a beehive
Follow one colony through a whole year of working, growing and making honey.
Ages 6 to 8 · Animals
Deep Dive24 minAnimalsSue: the story of one T. rex
Found by chance, dug up, fought over, sold and rebuilt: the biggest T. rex ever found.
Ages 6 to 8 · Animals
Deep Dive19 minMake and doThe piano and how it makes music
Hammers, strings and a tuner's ear: what happens inside a piano when you press a key.
Ages 6 to 8 · Make and do
Deep Dive22 minOceanA river's trip from a stream to the sea
Down the Mississippi with one drop of water, past the towns and the boats, to the Gulf.
Ages 6 to 8 · Ocean
Deep Dive23 minEarthCaves: how water carves a mountain
How rain hollows out a mountain, what grows drip by drip, and who lives in the dark.
Ages 6 to 8 · Earth
Deep Dive21 minAnimalsHow cats moved in with people
From wildcat to sofa cat: mice, farms, Egypt, whiskers and the purr.
Ages 6 to 8 · Animals
Deep Dive23 minSky and spaceThe robots on Mars
Five rovers and one helicopter, and why nobody can drive them with a joystick.
Ages 6 to 8 · Sky and space
Deep Dive22 minEarthThe volcano that grew in a cornfield
A farmer watched a volcano be born in his field in 1943. It grew for nine years.
Ages 6 to 8 · Earth
Deep Dive23 minMake and doThe Olympics, from ancient Greece to today
From a footrace in ancient Greece to the torch, the rings and the athletes of today.
Ages 8 to 10 · Make and do
Deep Dive28 minSky and spaceHow we learned to forecast the weather
Red skies, barometers, balloons, radar and satellites: how a forecast got good.
Ages 8 to 10 · Sky and space
Deep Dive23 minMachinesThe first subway: trains under the city
London, 1863: the first trains under a city, how they dug it, and the map that followed.
Ages 8 to 10 · Machines
Deep Dive22 minMachinesWhen the lights came on
Candles and gaslight, the first power station, and the path from it to the switch on your wall.
Ages 8 to 10 · Machines
Deep Dive24 minMachinesThe navigators who crossed the Pacific by the stars
Stars, swells, birds and a double-hulled canoe: finding islands across the biggest ocean.
Ages 10 and up · Machines
Deep Dive22 minMachinesThe bicycle makers who learned to fly
Gliders, a homemade wind tunnel and the control problem nobody else had solved.
Ages 10 and up · Machines
Deep Dive26 minMachinesThe ship in the ice: Shackleton's Endurance
Trapped, crushed, camped on the ice, an open-boat voyage, and every man home.
Ages 10 and up · Machines