The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
There are approximately three chickens for every human on Earth.
13
Check your map! Virginia extends farther west than West Virginia.
67
Mexico City is built on top of an underground resevoir!
47
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
