Explore, Play, Discover: Websites, Activities, and More

When you pick up a baseball, it immediately suggests its purpose: to be thrown fast and with considerable accuracy.

What can you do with a frozen water balloon? Plenty!

Use your naked egg to experiment with osmosis, the movement of water across a membrane.

What's really going on when you bake? Find out.

Recycle a potato chip can into a simple camera.

What is a gear ratio? And how do gears help make the bicycle so efficient?

Check out our coverage of NASA’s rover, Curiosity, from 2012.

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Wind tubes are a playful and inventive way to explore the effect that moving air has on objects.

A collection of auditory illusions found in indigenous folk practices, popular music, and scientific research.

Geometry Playground will change the way you think about geometry. This exhibition engages your hands, brain, and body in playful investigations of this most visible branch of math.

Learn about scale and structure with eight great activities designed for the elementary classroom.

Search a geological map of Ethiopia for fossils.

Making waves.

Humpbacks, minkes, and orcas are often sighted in the nutrient-rich Antarctic waters.

See a map of recent earthquakes in the United States, and learn why earthquakes happen so frequently on the West Coast.

Peter Whitehead is an instrument builder, performer, and composer.

Learn about origami, make your own paper, and find out the best way to fold a paper airplane.

Investigate the interior angles of polygons with your feet.

See a map of recent earthquakes in the United States, and learn why earthquakes happen so frequently on the West Coast.

Learn about the most important piece of equipment-- your feet!

Try your hand at explaining symbols both modern and ancient, and then make your own.

Explore Saturn, its rings and moons, and see the latest images.

Scientists dig under the surface for clues to past climate

The earth moves in mysterious ways

Amino acids and corn syrup combine to create new aromas.

It's easy to fold a sheet of paper in half. But can you fold a sheet of paper in half ten times?

Get down and dirty with the surprising science of soil.

What's the science behind a home run? Why do curveballs curve? Learn about the game from players from the S.F. Giants & Oakland A's.

Journey into Chaco Canyon, where ancient people built monuments to the cosmos. Journey to Chichén Itzá, where the Maya built monuments to the sun.

Teeth are the most common fossils found. What can they tell us?

Cells behaving badly

Grow spikes of crystals in the sun.

Enjoy the early memories of some of the visitors to this website.

How can a microscopic organism lift several pounds of dough? Find out with this activity.

See how TV screens create images from many tiny colored dots of light.

Each webcast, the Exploratorium staff and teachers demonstrate their science projects and compete for the title of IRON SCIENCE TEACHER!

Do hot water and cold water mix?

Find out why balls bounce--or fail to bounce.

Touch supercooled water drops with an ice crystal and trigger them to freeze instantly.

Everyone seems to love the sound of their own voice in the shower. That's because a simple shower stall produces some complex sound-altering effects.