The average ice berg weighs 20,000,000 tons!
54
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
Mexico City is built on top of an underground resevoir!
47
Check your map! Virginia extends farther west than West Virginia.
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