There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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Every year, Alaska has about 5,000 earthquakes.
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The average ice berg weighs 20,000,000 tons!
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The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
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The city of Houston, Texas is built on a swamp and is slowly sinking!
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Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
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An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
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