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Running Time:
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.

Project: Teacher Institute Science Teaching Tips | Browse All

Date: April 8, 2009
Format: Demonstration / Activity
Category: Popular Science
Subject(s): Art, General Science
Running Time:
00:03:28
TI postdoctoral fellow Julie Yu explains what a stem cell is and why they’re important.

Project: Teacher Institute Science Teaching Tips | Browse All

Date: March 18, 2009
Format: Interview
Category: Popular Science
Subject(s): General Science
Running Time:
00:08:43
TI teacher coach Rilla Chaney says she’s no singer, but she’s successfully used songs to teach science concepts in her classroom.

Project: Teacher Institute Science Teaching Tips | Browse All

Date: March 18, 2009
Format: Interview
Category: Everyday Science
Subject(s): General Science, Art
Running Time:
00:38:06
Celebrate Pi Day— an international holiday born at San Francisco’s Exploratorium. Join us for a live webcast where we examine the nature of everyone's favorite mathmatical constant, 3.1415926535…ad infinitum!

Project: Pi Day | Browse All

Date: March 14, 2009
Format: Event
Category: Popular Science
Subject(s): General Science, Math
Running Time:
00:19:33
What makes one individual "fitter" than another? Staff scientist Karen Kalumuck introduces natural selection, then four teams of "predators" compete with each other for prey.Who will thrive and who will face extinction?

Project: Darwin | Browse All

Date: February 11, 2009
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:00:55
Why do the hands on clocks go "clockwise?" Seems like a circular definition, but if you looked closely at sundials in the northern hemisphere, you'd notice that the shadow of the sun moves around the sundial in a "clockwise" direction. This was adopted by clock-makers and became the standard we know today. In the southern hemisphere, the sun's shadow moves around the dial in the opposite direction, so if clocks had been invented there, our watches would move the other way.

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: January 12, 2009
Format: Expedition
Category: Science in Action
Subject(s): Astronomy/Space Science, General Science
Running Time:
00:49:29
Our intrepid Exploratorium team shares experiences from their visit to Shackleton's hut. This hut is at Cape Royds, where Shackleton mounted an expedition to the South Pole and made a first ascent of Mt. Erebus.

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: December 28, 2008
Format: Expedition
Category: Science in Action
Subject(s): General Science, History
Running Time:
00:38:04
We talk to photographer John Weller, who spent the austral summer 2008 scuba diving under the ice in Antarctica.

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: December 21, 2008
Format: Expedition
Category: Science in Action
Subject(s): Art, General Science
Running Time:
00:00:28
The air is so dry here at McMurdo that anything that gets charged, stays charged. Moist air quickly discharges objects because the water in the air picks up charge from an object and quickly flies away, taking charges with it. This does not happen here. We are constantly getting shocks from our clothing, our bedding and when we exit vehicles.

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: December 11, 2008
Format: Expedition
Category: Science in Action
Subject(s): General Science, Physics
Running Time:
00:03:07
Geneticist Mark Stoneking discusses a special type of genetic material called mitochondrial DNA gets passed directly from mother to child. Largely unchanged from generation to generation, this genetic material gives researchers a way to track populations back in time.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: November 11, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science