The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The Sahara desert expands at about 1km per month.
90
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The Caspian Sea is also classed as the world's largest lake.
52
There are more than 50,000 earthquakes throughout the world every year!
47
One cubic mile of seawater contains about 50 pounds of gold.
79
The water of the Antarctica is so cold that nothing can rot there.
334