Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
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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
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
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