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00:11:46
Join Senior Scientist Paul Doherty as he measures the power used by two lightbulbs--one incandescent and one fluorescent--that make the same amount of light.

01:01:49
In this zany competition teachers will have ten minutes to create a science activity from a special secret ingredient. This week: crayons!

00:48:31
A century after publication of Einstein's famous papers on light and relativity, this most celebrated of Nobel Laureates will be the subject of a talk by award-winning science writer K.C. Cole. She'll discuss the ways in which Einstein continues to influence physics today, from detecting gravity waves to understanding string theory.

1:02:13
In this zany competition teachers will have ten minutes to create a science activity from a special St. Patrick's Day secret ingredient-things that are green!

12:47:56
The concept of space-time--perhaps Einstein's most fundamental contribution to our understanding of the universe--will be explored using special red lasers.

1:11:41
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: Milk!

00:07:58
How does your eye work? You see the world because light gets into your eyes. Your eye uses that light to make an image of the world inside your eye���just as a camera uses light to make a photograph. At the Exploratorium, we dissect cow eyes to show people how an eye functions, and look at the parts that make up an eye. This video shows and explains a dissection with one of our staff Explainers.

00:26:34
Paul Doherty and Eric Wegryn explore the latest photos of Titan, Saturn���s largest moon, taken from only 750 miles away by the Huygens probe.

00:18:43
Dr. Paul Doherty and Dr. Eric Weygren discuss the most intriguing moon in the Solar System, Titan. Titan is veiled in a mysterious, dense, foggy atmosphere.

00:48:17
The Live @ cast and crew take a journey to our Nation's Capitol for a special politically-charged edition of Iron Science Teacher. The competitors must create a math or science activity that is politically correct and leaves no child behind.