The state with the longest coastline in the Continental U.S. is Michigan.
31
Mexico City is built on top of an underground resevoir!
47
The average ice berg weighs 20,000,000 tons!
54
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
In 1850, only 8% of the people in California were women.
0
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109