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00:10:15
Looming over San Francisco since 1973, Sutro Tower's antennae transmit and receive radio and television signals to the nine-county SF Bay Area. Perched above Twin Peaks, the tower has become a local icon, now revered as much as it was abhorred when first built. Visit the tower with us to find out what’s on it, what’s underneath it, and its history, including its transformation from eyesore to icon.

00:03:14
Japanese artist Fujiko Nakaya muses on her ephemeral outdoor creation for the Exploratorium—the Fog Bridge—explaining it as both an homage to San Francisco and a conversation with nature itself.

00:00:29
Fog Bridge #72494 | Artist: Fujiko Nakaya | Fujiko Nakaya’s fog installation stretches across the 150-foot-long pedestrian bridge that spans the water between Piers 15 and 17. Water pumped at high pressure through more than 800 nozzles shrouds participants in mist and puts their own perceptions at the center of their experience.

San Francisco's meteorological landscape is as unique as its social landscape. Tune in as we investigate why our city has many microclimates.

01:23
In this short interview with Dan Goods, designer, artist, and visual strategist at NASA's Jet Propulsion Laboratory, Goods discusses his art piece, "Jupiter Fog Pool." The piece, inspired by the Juno mission to Jupiter, was part of "Cosmological Constructs," our After Dark event of September 2010.

Most things won't burn on Mars—after all, the main ingredient in the Martian atmosphere, carbon dioxide, is used in fire extinguishers on earth. So how would one create fire without oxygen? Use metal!This slow motion footage shows magnesium burning within a block of dry ice.

00:04:48
Sarah Santos and Jeremy Rector demonstrate two ways to make ferrofluid during a live Webcast of the Exploratorium's Iron Science Teacher. Watch the whole episode (type "oil" in the search box), along with many other episodes of Iron Science Teacher at www.exploratorium.edu/tv

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!

00:28:53
Paul Doherty and Ron Hipschman discuss the clouds and atmosphere of Saturn. Learn how to make a cloud in your kitchen or an atmosphere in a soda bottle!

00:27:05
Paul Doherty and Ron Hipschman discuss some of Saturn's interesting history.