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1:08:10
Watch as Exploratorium staff and local teachers compete for the title of Iron Sscience Teacher. Each contestant has ten minutes to make a science lesson out of a secret ingredient.

0:46:48
In 1963 Benoit Mandelbrot introduced the fractal concept. Fractals are shapes or behaviors that have similar properties at all levels of magnification. Just as the sphere is a concept that unites raindrops, basketballs and Mars, so fractal is a concept that unites clouds, coastlines, plants and strange attractors. Dr. Mandelbrot dropped in for a visit during our 2001 series of webcasts about Antarctica. We took some time out from the freezing cold to interview him.

0:27:29
In today's webcast, California Academy of Science's Pam Schullar talks about her work with penguins and answers audience questions.

0:54:27
The first-ever live event inside the NASA clean room, where space hardware is being prepared for the Hubble Space Telescope. We'll get dressed in "bunny suits" to explore the room and show you the activities of engineers and scientists getting ready for the next Hubble servicing mission in November.

0:38:20
Hubble's pictures have changed our understanding of the galaxy. Here we meet scientists who show us how their images have led to new discoveries, then check in on our own imaging project and track its progress.

0:54:09
How much time does an astronomer need to get that great picture? We'll talk with scientists about how they determine their experiments, and learn what it takes to make their case for a few minutes of the telescope's time.

00:20:06
Dr. Paul Doherty scours the globe for the world's greatest science demonstrations. Here he partners with Dr. Yoji Takikawa of the International Christian School in Tokyo. Dr. Takikawa creates at least one new activity every month and has published over 25 books of science activities. Watch this webcast, follow the links to the 'recipes,' then try it yourself!

0:50:36
This informative programming includes dispatches from the Young Women's Health Conference, a Webcast on breast cancer, and teen perspectives on pregnancy and gay issues.

0:20:52
The Science Summer 2000 workshop explored the science of disco mirror balls, tie dye, lasers, and other things that made the 1970s so happening and far-out.

2:19:31
Visit a chocolate factory and learn how to make chocolate candles! Host Sedge Thomson talks with chocolatiers, chefs, and scientists about the history and science of this intoxicating food.