There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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The Atlantic Ocean is saltier than the Pacific Ocean.
54
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
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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.
8
Even Antarctica has an area code. It's 672.
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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.
1
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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