An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
More than 25% of the world's forests are in Siberia.
51
The water of the Antarctica is so cold that nothing can rot there.
334
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18