If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
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
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The Sahara desert expands at about 1km per month.
90
Australia's Great Barrier Reef is 1,250 miles long!
45
In 1850, only 8% of the people in California were women.
0
Europe is the only continent without a desert.
62