The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Europe is the only continent without a desert.
62
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
There are more than 50,000 earthquakes throughout the world every year!
47
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Forest fires move faster uphill than downhill.
52