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
Every year, Alaska has about 5,000 earthquakes.
31
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
One cubic mile of seawater contains about 50 pounds of gold.
79
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Mexico City is built on top of an underground resevoir!
47