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00:04:22
Meet Dr. Ethan Brodsky from the U. of Wisconsin, who advised a group of undergraduate students in the design and build of an electric snowmobile. Video produced by Ice Stories correspondent Zoe Courville.

00:48:10
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: hair care products!

00:00:29
A witty public service announcement for The Superstition Obstacle Course, where visitors were invited to challenge some superstitions. Superstition Obstacle Course was part of the Mind exhibit collection.

01:53:32
The Exploratorium celebrates the 20th anniversary of Pi Day with a pie-throwing contest, Pi Day exhibits in Second Life, and more activities honoring everyone's favorite mathematical constant.

00:00:31
An introduction to the bee hummer, a simple musical instrument that sounds like a swarm of buzzing bees when you spin it around.

00:06:08
A detailed demonstration of how to make the bee hummer, including a discussion of materials needed, troubleshooting tips if your hummer isn't humming well, and a demonstration of how the instrument should be played.

00:01:27
The science behind this simple musical instrument, including the concepts of sound, vibration, and amplification.

00:00:39
An introduction to the cuica (pronounced KWEE-kah), a small friction drum used in Brazil's Carnival parade.

00:06:39
A detailed demonstration of how to make this small friction drum, including a discussion of materials needed and how different kinds of materials make for cuicas that produce different sounds.

00:01:30
The science behind this musical instrument, including the concepts of sound, vibration, resonance, and amplification.