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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!

00:59:15
Astronomers in many parts of the world watched as Venus moved across the disk of the Sun, one of the rarest planetary alignments. The Exploratorium webcast this historic event from Greece.

1:14:57
James Turrell studied optics and perceptual psychology in college, but gravitated towards art as his curiosity led him to investigate light itself. In this Webcast of a lecture, James Turrell discusses his experiences manipulating pure light and how it became his artistic medium. He reveals how this early work led him to discover Roden Crater in Arizona and to create his subsequent lifelong project of transforming the crater into an astronomical observatory.

1:00:29
Join us as we talk turkey with food expert and author Harold McGee. Why does a turkey continue to cook after it is out of the oven? How can you be sure to thoroughly cook the dark meat without drying out the white meat? Is stuffing really a good idea? How do you make the skin golden?

1:00:24
Why does a turkey continue to cook after it is out of the oven? How can you be sure to thoroughly cook the dark meat without drying out the white meat? Is stuffing really a good idea? Join us as we talk turkey with food expert and author Harold McGee. Discover why temperature is critical, and investigate different cooking methods: roasting, deep frying, barbecuing, and smoking.

0:41:27
In this special "holiday" edition of Iron Science Teacher, Paul Doherty joins our competition in the webcast studio live from Antarctica. 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: ice!

0:21:02
Check in with Noel Wanner and Paul Doherty as they tell us more about their visit to the active volcano Mt. Erebus.