One cubic mile of seawater contains about 50 pounds of gold.
79
More than 25% of the world's forests are in Siberia.
51
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Even Antarctica has an area code. It's 672.
58
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
There are more than 50,000 earthquakes throughout the world every year!
47
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41