The North Atlantic gets 2.5 centimetres (1in) wider every year.
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There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48