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
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
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