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
Forest fires move faster uphill than downhill.
52
The state of Florida is bigger than England!
74
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The state with the longest coastline in the Continental U.S. is Michigan.
31
Europe is the only continent without a desert.
62