An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138