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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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1:48
Einstein’s Thought Experiment

Einstein’s Thought Experiment

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1:49
What is Spacetime?

What is Spacetime?

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2:06
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Launching Half a Ship

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2:42
The Minerals Behind Modern Life

The Minerals Behind Modern Life

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2:04
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Lake vs. Olive Oil

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3:54
A Cathedral of Ice

A Cathedral of Ice

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2:45
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Bazaar Rocks

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2:24
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NOVA

How Vultures Can Eat Rotten Meat

Why don't vultures get food poisoning?