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

Listen to internationally recognized authorities on human thought and behavior, including Temple Grandin and Paul Ekman.

Make a tool that lets you measure how tall a building is or how high a rocket flies.

The frozen worlds of the Arctic and Antarctica

Can't decide if you're sandy or silty? Try this simple test.

In 2009, the ECHO (Education through Cultural and Historical Organizations) Partners hosted a national symposium held at the Exploratorium to discuss the effects of climate change on the planet. You can watch archived webcasts of the symposium.

Scientific knowledge and a few chemical concoctions can get you through a Bad Hair Day.

Explore the important engineering concepts of yield strength, ultimate strength, and elasticity as they relate to building a better bicycle.

These unique – and uniquely beautiful – seal species spend their lives amid the sea ice

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

Experiment with water, temperature, and light to see what makes a seed come out of its shell.

Listen to the story of Ladle Rat Rotten Hut.

The earth moves in mysterious ways

Darkening polar skies often bring beautiful light displays.

You may be surprised at the results of this "wimpy" workout.

Sit down for compost tea with a visionary cultivator.

Explore light, shadow, and motion using a variety of simple materials and light sources.

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

Seasoned gardeners depend on a community of bacteria, worms, and insects to get the most out of their plantings. Find out why.

Measure your reaction time with just a meter stick and some help from a friend.

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

A series of talks celebrating both the historical and contemporary dimensions of the Eames design legacy.

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

Test your memory - and learn how to improve it!

Why is the bicycle the most efficient way to travel? Explore bicycle science and culture.

Use this handy conversion calculator to convert between the many units found in recipes.

Make a paper model that helps explain the changing tides.

Just how much fat is in ground beef? You may be surprised.

The more astronomy changes, the more it stays the same. This series of images juxtaposes ancient and modern study of the celestial bodies.

The untold stories behind scientific discovery.

A rock-climbing physicist explores the mechanics of his hands.

An introduction to the concepts and theories that contribute to contemporary complexity research.

Darkening polar skies often bring beautiful light displays.

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

Search a geological map of Ethiopia for fossils.

Make a scale model of the Solar System and learn the REAL definition of "space."

Artist Bob Miller's Light Walk at the Exploratorium will change the way you look at light, shadow, and images.

Can making up stories improve your memory? Try it!

Human corpses decay alfresco, all in the name of forensic science.

Crabeaters have extraordinary teeth, Weddells are downright cute, and leopards are as fierce as their namesake

A model for heart development

Scratch Film, also known as Direct Animation, is the process of drawing and scratching designs directly onto film.

Explore our 2000 guide to the solar max, the period in the solar cycle during which the number of sunspots is greatest.

Learn how to bridge the digital generation gap

A trash-filled median blossoms into a community oasis.

Explore the places, people, tools, and ideas behind the origins of matter, the universe, and life itself.