The 18,000-foot Mt. Parinacota presents some fitness challenges for climbers.
Measure your reaction time with just a meter stick and some help from a friend.
Make your own refracting telescope from a pair of reading glasses.
Capture the sound of your beautiful voice by singing into a wok.
Here's how you can model the use of X rays for medical examinations with some sand and a piece of screen.
Sit down for compost tea with a visionary cultivator.
Discover the difference between taste and smell.
Make a simple musical instrument that sounds like a swarm of buzzing bees when you spin it around.
The Antarctic food web is the simplest on the planet, and krill are at its hub.
Learn more about the process of making Champagne.
Pier 15 (Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
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