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00:22:45
Join Exploratorium Senior Scientist Paul Doherty and visiting scientist Alfredo Mateus for an exploration of hands-on demos. In today's webcast, Paul and Alfredo will be looking at a voice activated chemical reaction and what happens when you heat plastic in water!

00:00:36
In May 2009, the ROV Jason captured these images of violent explosions of the West Mata volcano near Fiji. At almost 4,000 feet underwater, this is the deepest erupting volcano ever witnessed and captured on video. It's also the first time anyone has ever observed the formation of deep-ocean seafloor as it's happening.

00:08:53
A story can help make a subject come alive for your students. TI teacher coach Carol Murphy talks about the myriad ways she’s used storytelling in her science classes.

00:08:15
Paul Stepahin is an Exploratorium exhibit developer who has a background in physics. He's worked on exhibits such as Elephant Turntable and Additor. Paul's knowledge and love of computer science and complex math has made him a resource for Exploratorium staff. In this program, Paul discusses the theoretical math P versus NP problem.

00:15:41
Dr. Christine Carter is a sociologist who studies the childhood roots of happiness. She is the executive director of the Greater Good Science Center at UC Berkeley, an interdisciplinary research center that promotes the study of happiness, compassion, and altruism. In this program, Dr. Carter speaks about happiness, altruism, and the inspiring intersection of her personal and professional worlds.

00:38:04
We talk to photographer John Weller, who spent the austral summer 2008 scuba diving under the ice in Antarctica.

00:31:28
Hear from marine biologist Dr. Stacy Kim, who uses a small camera-equipped remotely operated vehicle (ROV) to investigate the bottom-dwelling creatures under the sea ice.

In this Webcast, we speak with Ice Stories correspondent Howie Koss, a member of the Offshore New Harbor Expedition.

00:37:58
Halloween Special Edition! In this zany competition teachers have ten minutes to create a science activity from a special Halloween secret ingredient... bats!

00:54:24
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: eye care products!