An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
There are more than 50,000 earthquakes throughout the world every year!
47
Mexico City is built on top of an underground resevoir!
47
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Europe is the only continent without a desert.
62
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18