The Sahara desert expands at about 1km per month.
90
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
Every year, Alaska has about 5,000 earthquakes.
31
Check your map! Virginia extends farther west than West Virginia.
67
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109