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00:05:27
Learn how to build a version of a Brazilian instrument called the cuica, which demonstrates principles of sound. This podcast was created collaboratively in a teacher workshop at the Exploratorium.

00:16:56
How does the interaction of solar radiation on sea ice effect climate change? Please join us as we chat live with Dr. Don Perovich, an expert in the fields of albedo effect, and sea-ice mass balance on climate.

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.

00:57:53
Join us as we talk with Dr. William Fry, emeritus professor at Stanford University and the father of gelotology, the study of humor and laughter, and their effects on the human body.

00:48:40
Searching for extraterrestrial life: is it telephoning aliens or really complicated math equations? Join Senior Scientist Paul Doherty, NASA Ames planetary Scientist Eric Wegryn, and SETI's Senior Scientist Seth Shostak as they explore how to find planets that could support life. How many of these planets are there? How did we find them? When will we know for sure?

00:42:10
Exploratorium Senior Scientist, Dr. Paul Doherty, takes us through the Photoelectric Effect and the "invention" of photons.

00:56:57
Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week’s “secret” ingredient: CD cases!

00:58:11
Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. Tee off with this week’s “secret” ingredient-golf balls!