Even Antarctica has an area code. It's 672.
58
The Sahara desert expands at about 1km per month.
90
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Mexico City is built on top of an underground resevoir!
47
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48