The Colosseum was built in just 8–10 years using 100,000 cubic meters of travertine stone.
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The human brain operates on about 20 watts of power.
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Curiosity can enhance learning and memory retention.
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The Empire State Building was completed in just over a year.
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Polar bears have black skin beneath their white fur.
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The Earth's core generates geothermal heat.
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An ostrich's eye is larger than its brain.
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