Forest fires move faster uphill than downhill.
52
The Caspian Sea is also classed as the world's largest lake.
52
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The Sahara desert expands at about 1km per month.
90
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The state with the longest coastline in the Continental U.S. is Michigan.
31