An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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The city of Houston, Texas is built on a swamp and is slowly sinking!
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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Israel's Dead Sea is 1,312 feet below sea level.
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The state with the longest coastline in the Continental U.S. is Michigan.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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