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The Power of the Flood Myth

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3:32
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Digital Domain of Warfare

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1:56
Are We Ready for a Cyber Attack?

Are We Ready for a Cyber Attack?

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4:00
Sea Level Rise: When 1 in = 2 ft

Sea Level Rise: When 1 in = 2 ft

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2:42
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A Labyrinth of Lava

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1:18
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Towers of Chalk in Kansas

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1:11
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How Vultures Can Eat Rotten Meat

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2:20
Time Travel in the Grand Canyon

Time Travel in the Grand Canyon

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4:33
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How Panama Changed the World

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3:41
These Boulders are Alive

These Boulders are Alive

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2:48
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The Volcano Under Yellowstone

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4:28
Gravity's Effect on Spacetime

Gravity's Effect on Spacetime

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NOVA

See a Glacier Like Never Before

Meet Helheim, a glacier in Greenland of exquisite beauty at every scale.