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Better Hair through Chemistry
Learn the science behind bad hair days, and learn how hair increases its length when humidity increases, making curly hair frizz and straight hair go limp.
Jumping to Conclusions
Your brain is always looking for blank spaces and filling them in. Sometimes, your brain leaps to the wrong conclusion. Then you get a surprise!
Tic-Tac-Toe
Playing games is a great way to exercise your brain. Even a simple game like Tic-Tac-Toe can teach you about strategy.
Which Languages Are Related?
Examine words from different languages and determine which two languages are the most closely related.
Do Your Own Dissection
Download a PDF file with step-by-step instructions for doing your own cow's eye dissection.
Cow's Eye Dissection
Find out how your eyes work and watch a real dissection of a cow's eye.
The Great Shake: San Francisco 1906
San Francisco was born in gold dust, and nearly died in rubble and ashes.
Since 1906
The 1906 earthquake jolted geologists into focusing on how and why faults break loose.
Plate Tectonics
See a map of recent earthquakes in the United States, and learn why earthquakes happen so frequently on the West Coast.
Liquefaction
What happens to sandy or fine-grained soils when an earthquake shakes them up? Try this simple activity to find out.
Building for the Big One
The three most densely populated cities on the planet where seismologists expect major earthquakes are San Francisco, Tokyo, and Istanbul. Find out why the effects in each city will be very different.
The Amazing Adaptable Frog
A comprehensive tour through the weird and wonderful world of frogs.
Highway Seismograph
How good is your friend's driving? You be the seismometer, and find out whether your pal is a smooth sailor or a mover and shaker.
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