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00:50:00
Cheryl E. Leonard is a composer, performer, and instrument builder who creates instruments from unusual raw materials—everything from glass shards and pinecones to glaciers and box springs. Here she performs Selections from Antarctica: Music from the Ice with Phillip Greelief, as part of the Exploratorium’s Resonance series.

00:12:21
Musician and comedian Reggie Watts improvises in the Sound Column at the Exploratorium's former home using only his voice and a looping machine.

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.

1:17:34
How do opera singers sing loud enough to be heard over an orchestra? Can an opera singer's voice really break a wine glass? What's the difference between a baritone and a soprano? Discover the answers to these questions—and more!—in this presentation for families. Join physicist and composer Dr. Brian Holmes and San Francisco Opera Center Director Sheri Greenawald to explore how the art and science of singing combine in opera.

1:13:04
Watch as Exploratorium staff and local teachers compete for the title of Iron Science Teacher. Each contestant has 10 minutes to make a science lesson out of a science ingredient. This is a Halloween edition of Iron Science Teacher, and today's secret ingredient is: Bones!

00:19:05
Join Exploratorium scientist Dr. Paul Doherty and Dr. Eric Wegryn as they discuss the rings of Saturn and show new images from Cassini.

00:55:27
Watch as Exploratorium staff and local teachers compete for the title of Iron Science Teacher. Each contestant has 10 minutes to make a science lesson out of a secret ingredient. In this special Halloween edition, today's secret ingredient is: Plastic Bags!

00:11:16
Our team of middle school students from the Aim High program investigates new technologies that use our unique physical traits as tools for identification. Vox Unlocks tunes into voice recognition