What's the deepest hole anyone has ever dug?
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8:29
How were LEGO bricks invented?
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8:26
Skunks for Kids | Learn all about these smelly mammals
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7:46
What's the biggest tree in the world?
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7:34
How can you tell if a mushroom is poisonous?
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22:02
20 Most Beautiful Places On Planet Earth
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7:32
What's the longest anyone's ever stayed awake?
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5:33
How is gold made?
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44:47