The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
In 1850, only 8% of the people in California were women.
0
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The Caspian Sea is also classed as the world's largest lake.
52