The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Every year, Alaska has about 5,000 earthquakes.
31
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The state of Florida is bigger than England!
74
Mexico City is built on top of an underground resevoir!
47