Israel's Dead Sea is 1,312 feet below sea level.
48
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The water of the Antarctica is so cold that nothing can rot there.
335
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Mexico City is built on top of an underground resevoir!
47
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18