There are more than 50,000 earthquakes throughout the world every year!
47
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Check your map! Virginia extends farther west than West Virginia.
67