An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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Check your map! Virginia extends farther west than West Virginia.
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Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The average ice berg weighs 20,000,000 tons!
54
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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