The Sahara desert expands at about 1km per month.
90
The state with the longest coastline in the Continental U.S. is Michigan.
31
Even Antarctica has an area code. It's 672.
58
The water of the Antarctica is so cold that nothing can rot there.
334
Mexico City is built on top of an underground resevoir!
47
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
The Caspian Sea is also classed as the world's largest lake.
52