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

Dig into the succulent science of making things grow.

Learn about the body's vital defense force.

In the 1870s, an American woman could not vote. She could not own property in her own name after marriage. But she could play ball. . .

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

Can you trust your own memory? Find out with this activity.

Can your eyes fool your nose? Find out with this experiment.

The Exploratorium is taking it outside to explore natural and human-made phenomena in and around San Francisco. Look for new episodes twice each month.

From 1977 until 2003, the Exploratorium published a quarterly magazine. The Exploratorium Magazine Online is a companion to selected issues of the print magazine, providing key articles and activities and including multimedia features.

You can measure your reaction time with just a yardstick and some help from a friend.

Explore the surrounding sounds that everyday objects make. Build a noise contraption from these objects, then add a PicoCricket to automate your contraption. Finally, add a light sensor and program your sound automata to "play" when triggered by light.

Tour a hydroponic greenhouse in frozen Antarctica.

High energy prices got you down? Discover how pickles can ease your troubles.

Is it just a glorified plank with roller skate wheels on it? Or is it a highly engineered device through which kids have reclaimed the urban landscape, bringing creativity and style back to the sterile asphalt spaces of sprawl?

Find out why biodiversity benefits plants and people alike.

Listen to bird songs and try to figure out which are songs, which are companion calls, and which are alarms.

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

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

Looking at the night sky can help you see how your eyes and brain make sense out of moonlight.

An inside look at a chicken's egg.

Grow your own stalagmites in luscious colors.

Listen to the sound of a rainstorm – anytime, anywhere.

Join us as we crunch our way through everything from our San Francisco sourdough to Injera and Pugliese.

Follow along with expedition leader Bob Ballard and his crew on the exploration vessel Nautilus as they search for hydrothermal vents, underwater volcanoes, and ancient shipwrecks.

Visit Las Cuevas Research Station in Belize and the Natural History Museum in London to learn about the study of biodiversity.

Come along as we explore the cool, dark world of cheese.

Learn about the rovers that have been exploring Mars since 2004, and view the amazing images they've taken.

Here's how you can model the use of X rays for medical examinations with some sand and a piece of screen.

Take a peek at the colorful world of plant sex.

With just mud, paper and an egg, you can grow colonies of multi-hued microbes!

Why do road bikes have thin tires, while mountain bikes have fat tires?

Vsit a quirky kitchen where you can compose music with ordinary (and not-so-ordinary) objects.

Find out about bicycle brakes and balance, and calculate your stopping distance on a bicycle.

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

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

What happens to meat when you cook it?

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

This card game is a little like a puzzle. You and your opponents all try to find solutions to the puzzle���and the one who finds the most solutions wins!

Make a crowd-pleasing noisemaker called a sound sandwich, which you can adjust to raise or lower its pitch.

Four downloadable workshop guides for teaching introductory genetics in a museum or other informal education setting.

The brightest buds get all the glory – but they're not just for show.

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.

Design and build a musical instrument that responds to changing light.

Why is baseball so popular in Japan?

Learn about the body's vital defense force.

Commemorate the 1906 quake! Rummage through live earthquake data, subductive science, and more. Learn about earthquakes in Faultline: Seismic Science at the Epicenter