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

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

Just how do we remember a face?

Why do teens take risks, and what do our notions of risk tell us about the dangers of growing up?

Does the sun rise in the east? Not exactly.

Find out how different kinds of candy are made in the Candy-o-matic!

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

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

The Antarctic food web is the simplest on the planet, and krill are at its hub.

Living along the continental coastline of Antarctica are the emperors and the Adélies.

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

The lure of Terra Australis Incognita begins with the Ancient Greeks and ends with modern cruise ships.

The nearly ice-free Dry Valleys are an Antarctic anomaly, and Earth's closest equivalent to Mars.

A multifaceted exhibition that explored genetics and the Human Genome Project from a variety of perspectives from April 8 to September 4, 1995.

Search a geological map of Ethiopia for fossils.

Cuatro exposiciones lo suficientemente pequeñas para caber en tarjetas postales.

There's more to polar ice than just frozen water. Learn about the many varieties of ice found at the poles and how and where they form.

Take a peek at the colorful world of plant sex.

Why do teens take risks, and what do our notions of risk tell us about the dangers of growing up?

Learn about the body's vital defense force.

Turn your phone into a pocket science laboratory with tools to measure light, motion, sound, and more.

Using a simple trick of perspective, you can dress your friends in tiny cutout clothing.

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

Do hot water and cold water mix?

What's the difference between white meat and dark meat? Which animals have which and why?

Watch this timelapse video to see a zebrafish develop from a single cell into an embryo

Will the "real" South Pole please stand up?

Get messy with ExploraGoo and Outrageous Ooze! Get airborne with the Fabulous Foam Flyer! Get loud with the Water Gong or Straw Oboe!

In Observance of the 50th Anniversary of the bombing of Hiroshima and Nagasaki.

We can't predict when an earthquake will occur, but we can avoid some potential disasters.

Explore the ancient knowledge of the Maya, who built sophisticated monuments to the sun.

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

Your CRT screen may appear to wiggle when you give it the raspberry, but the only thing wiggling is you.

Take a timeline tour of our past and present.

A trash-filled median blossoms into a community oasis.

Explore our media collection

Can you take a sip of water from a cup with your eyes closed?

Want to see where the biggest quakes have been this week? Follow a few of the links below to see what's shaking in your neighborhood and around the world.

You can make sentences without words!

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

What happens to a cylinder when you scale it up?

Make cool boxes out of old (or new) greeting cards and postcards.

What brings archeologists and astronomers alike to this ten-mile canyon in remote New Mexico?

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

Want to see where the biggest quakes have been this week? Follow a few of the links below to see what's shaking in your neighborhood and around the world.

What kinds of candy are made and enjoyed in where you live?

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