Mexico City is built on top of an underground resevoir!
47
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Even Antarctica has an area code. It's 672.
58
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The Sahara desert expands at about 1km per month.
90
The state of Florida is bigger than England!
74