One cubic mile of seawater contains about 50 pounds of gold.
79
Every year, Alaska has about 5,000 earthquakes.
31
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
The water of the Antarctica is so cold that nothing can rot there.
334
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48