An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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One cubic mile of seawater contains about 50 pounds of gold.
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Even Antarctica has an area code. It's 672.
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The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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The Atlantic Ocean is saltier than the Pacific Ocean.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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