If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The state of Florida is bigger than England!
74
Even Antarctica has an area code. It's 672.
58
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
The average ice berg weighs 20,000,000 tons!
54