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Discovery
00:03:15
Get Ready for Orion
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Dianna Health Update from SmarterEveryDay
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Airglow: Why The Night Sky Is Really Green
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The Black Hole at the Center of Our Galaxy: Don t Panic!
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Future Space News of 2015: Destination Ceres and Pluto!
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An Asteroid Flyby, and Good Morning, New Horizons!
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00:07:15
The XYZ Affair
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The only woman to be awarded the Medal of Honor.
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00:08:18
The 1906 San Francisco Earthquake and A.P. Giannini
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00:08:55
Hedy Lamarr and the Torpedo
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The Angels of Bataan and WWII
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The Vanishing Aral Sea
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00:08:37
Ashley s 100, Mountain Men and Westward Expansion
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00:08:14
The Great Fire of Constantinople
559 观看
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00:01:48
Brothers Recall Their Father Who Perished on Eagle 56
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00:08:57
The costliest and deadliest flash flood in American history
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00:03:10
How the Wealthy of Pompeii Protected Their Valuables
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00:10:35
The Watermelon War
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00:01:49
Playing Games Help Leopard Cubs Learn and Unwind
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00:01:55
How Orphan Orangutans Get the Milk They Need
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