More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Mexico City is built on top of an underground resevoir!
47
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
The average ice berg weighs 20,000,000 tons!
54
Check your map! Virginia extends farther west than West Virginia.
67
It's still possible to see the division between East and West Germany due to different light bulbs.
5
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109