The Caspian Sea is also classed as the world's largest lake.
52
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
One cubic mile of seawater contains about 50 pounds of gold.
79
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Mexico City is built on top of an underground resevoir!
47
There are more than 50,000 earthquakes throughout the world every year!
47
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119