One cubic mile of seawater contains about 50 pounds of gold.
79
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The average ice berg weighs 20,000,000 tons!
54
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61