A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The state with the longest coastline in the Continental U.S. is Michigan.
31
Israel's Dead Sea is 1,312 feet below sea level.
48
There are approximately three chickens for every human on Earth.
13