The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Every year, Alaska has about 5,000 earthquakes.
31
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Forest fires move faster uphill than downhill.
52
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25