The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
There are more than 50,000 earthquakes throughout the world every year!
47
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
Australia's Great Barrier Reef is 1,250 miles long!
45
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138