The city of Houston, Texas is built on a swamp and is slowly sinking!
89
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
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
Mexico City is built on top of an underground resevoir!
47
Every year, Alaska has about 5,000 earthquakes.
31
