Overview
The tallest mountain in the world? Think again—cartographers had to when satellite date revealed a peak called "K2" might be the real champ. Which is the world's tallest mountain?
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18 - 1Return to Mt. St. Helens January 08, 1991 -
18 - 2ConFusion in a Jar April 30, 1991
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18 - 3The Hunt for China's Dinosaurs (1) February 05, 1991
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18 - 4Case of the Flying Dinosaur February 12, 1991
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18 - 5T. rex Exposed February 19, 1991
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18 - 6The Russian Right Stuff: The Invisible Spaceman February 26, 1991
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18 - 7The Russian Right Stuff: The Dark Side of the Moon February 27, 1991
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18 - 8The Russian Right Stuff: The Mission February 28, 1991
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18 - 9Swimming With Whales March 05, 1991
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18 - 10The Chip vs. the Chess Master March 26, 1991
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18 - 11Sex, Lies and Toupee Tape October 01, 1991
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18 - 12So You Want to Be a Doctor? October 09, 1991
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18 - 13Secrets of the Dead Sea Scrolls October 15, 1991
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18 - 14Suicide Mission to Chernobyl October 22, 1991 -
18 - 15Taller Than Everest? November 05, 1991
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18 - 16Fastest Planes in the Sky November 12, 1991
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18 - 17Avoiding the Surgeon's Knife December 03, 1991
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18 - 18Skyscraper! A NOVA Special December 10, 1991
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18 - 19The Fine Art of Faking It December 17, 1991
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