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
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
Forest fires move faster uphill than downhill.
52
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41