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00:23:58
The Nautilus has discovered several well-preserved shipwrecks on their mission, from ancient Greek trading vessels to modern sailboats. Join us as we talk with chief scientist Katy Croff Bell live aboard the Nautilus and see the latest video of their discoveries.

00:03:53
Join Exploratorium educator Ken Finn as he unlocks the mystery behind the black sand (a.k.a. magnetite) at Ocean Beach. This piece explores the origin of magnetite in the Sierra Nevada mountains, its journey down the Sacramento and San Joaquin rivers to the Bay, and the interesting physical properties of this mineral, plus some fun things you can do with it.

00:01:28
Burning Man is a literal hotbed of explosions and fire. Join Exploratorium Senior Scientist Paul Doherty as he looks at the properties that make up fire through the lens of the Burning Man event.

00:00:59
Exploratorium Senior Scientist Paul Doherty explains a double rainbow sighting at Burning Man 2010!

00:20.15
We take a tour of Black Island, and speak with Tony Marchetti who for the last 13 years has been running this vital communications station for the U.S. Antarctic operations.

00:16:56
How does the interaction of solar radiation on sea ice effect climate change? Please join us as we chat live with Dr. Don Perovich, an expert in the fields of albedo effect, and sea-ice mass balance on climate.

00:57:53
Join us as we talk with Dr. William Fry, emeritus professor at Stanford University and the father of gelotology, the study of humor and laughter, and their effects on the human body.

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.

00:23:04
Using a simple ball-bearing model, Exploratorium Senior Scientist Dr. Paul Doherty demonstrates Brownian Motion and explains how it proves the existence of atoms.