One cubic mile of seawater contains about 50 pounds of gold.
79
The Sahara desert expands at about 1km per month.
90
Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Mexico City is built on top of an underground resevoir!
47
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
There are approximately three chickens for every human on Earth.
13