Forest fires move faster uphill than downhill.
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An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The Niagara Falls moves upstream at an average rate of about 295ft a century!
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