Even Antarctica has an area code. It's 672.
58
Europe is the only continent without a desert.
62
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Every year, Alaska has about 5,000 earthquakes.
31
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The Sahara desert expands at about 1km per month.
90