The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
One cubic mile of seawater contains about 50 pounds of gold.
79
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61